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<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
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<div class="moz-cite-prefix">Hi Adam,<br>
<br>
Please excuse me for still being mostly unsure as to what you
wanted me to do (don't forget, I'm still an EPrints newbie!), but
I -think I- followed your directions and ran your script for the
two functions: get_value and set_value, and for both functions the
outcome was <b>"DEFINED"</b>. I hope that this was what you asked
me, otherwise you'll have to excuse my ignorance again:).<br>
<br>
I just made two corrections in your script in order for it to run,
so here it is:<br>
<br>
#!/usr/bin/perl -I/usr/share/eprints3/perl_lib<br>
<br>
use EPrints;<br>
my $ep = EPrints->new();<br>
my $repo = $ep->repository( "myrepo" ); #or whatever<br>
<br>
my $ds = $repo->dataset('eprint');<br>
my $field = $ds->field('title'); #or whichever field we're
talking about<br>
<br>
if (defined $field->get_property('get_value'))<br>
{<br>
print "DEFINED!!!\n";<br>
}<br>
else<br>
{<br>
print "NOT DEFINED\n";<br>
}<br>
<br>
<br>
On 22/09/2015 11:13 μμ, Adam Field wrote:<br>
</div>
<blockquote
cite="mid:EMEW3|4a54b2af00129bbfdebdd1d9e37429dbr8LLE314eprints-tech-bounces|ecs.soton.ac.uk|DCEA849D-A49D-4A58-BBF9-B65217D68AD6@ecs.soton.ac.uk"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Sorry for the delays, I've been on leave for a couple of days.
<div class=""><br class="">
</div>
<div class="">I would write a simple test script. Something like
this:</div>
<div class=""><br class="">
</div>
<div class="">=====================================================</div>
<div class="">#!/usr/bin/perl -I/opt/eprints3/perl_lib</div>
<div class=""><br class="">
</div>
<div class="">
<div class="">use EPrints;</div>
<div class="">my $ep = EPrints->new();</div>
<div class="">my $repo = $ep->repository( "myrepo" ); #or
whatever</div>
</div>
<div class=""><br class="">
</div>
<div class="">my $ds = $repository->dataset('eprint');</div>
<div class="">my $field = $ds->field('title'); #or whichever
field we're talking about</div>
<div class=""><br class="">
</div>
<div class="">if (defined $field->get_property('get_value))</div>
<div class="">{</div>
<div class=""><span class="Apple-tab-span" style="white-space:pre">
</span>print "DEFINED!!!\n";</div>
<div class="">}</div>
<div class="">else</div>
<div class="">{</div>
<div class=""><span class="Apple-tab-span" style="white-space:pre">
</span>print "NOT DEFINED\n";</div>
<div class="">}</div>
<div class="">=====================================================</div>
<div class=""><br class="">
</div>
<div class="">...then use this to test different ways of doing
things so that we can be sure the conditional actually does
work. Note I've not compiled this, so it will need some
debugging.</div>
<div class=""><br class="">
<div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">
<div class="">--</div>
<div class="">Adam Field</div>
<div class="">Business Relationship Manager and Community
Lead<br class="">
EPrints Services</div>
</div>
</div>
<br class="">
<div>
<blockquote type="cite" class="">
<div class="">On 18 Sep 2015, at 10:51, George Mamalakis
<<a moz-do-not-send="true"
href="mailto:mamalos@eng.auth.gr" class="">mamalos@eng.auth.gr</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta content="text/html; charset=utf-8"
http-equiv="Content-Type" class="">
<div text="#000000" bgcolor="#FFFFFF" class="">
<div class="moz-cite-prefix">OK, I had understood that
far :):) I meant if you could tell me how to test it.
Should I remove the get_value function from
Virtualwithvalue or from eprints_fields.py? And then,
test that epadmin reload works OK and that the site
shows records in manage deposits?<br class="">
<br class="">
On 18/09/2015 12:10 μμ, Adam Field wrote:<br class="">
</div>
<blockquote
cite="mid:EMEW3|8f9d3a45df8c4635fc691a64f1b74013r8HABY14eprints-tech-bounces|ecs.soton.ac.uk|A3465BAE-47E9-47B6-B912-754E46C290E8@ecs.soton.ac.uk"
type="cite" class="">
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8" class="">
Well, the specific thing I'd like you to check is that
the test:
<div class=""><br class="">
</div>
<div class=""><span class="Apple-tab-span"
style="white-space:pre"> </span>if ( defined
$self->get_property("get_value") ) <br class="">
<div class=""><br class="">
</div>
<div class="">...still works as expected now that
we've changed:</div>
<div class=""><br class="">
</div>
<div class=""><span class="Apple-tab-span"
style="white-space:pre"> </span> $defaults{get_value}
= undef;</div>
<div class=""><br class="">
</div>
<div class="">...to:</div>
<div class=""><br class="">
</div>
<div class=""><span class="Apple-tab-span"
style="white-space:pre"> </span> $defaults{get_value}
= $EPrints::MetaField::UNDEF;</div>
<div class=""><br class="">
</div>
<div class="">I think this might be a defined value
(it's an EPrints constant), so we may have to test
some other way.</div>
<div class=""><br class="">
<div class="">
<div style="letter-spacing: normal; orphans:
auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap:
break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;"
class="">
<div class="">--</div>
<div class="">Adam Field</div>
<div class="">Business Relationship Manager
and Community Lead<br class="">
EPrints Services</div>
</div>
</div>
<br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On 18 Sep 2015, at 09:51, George
Mamalakis <<a moz-do-not-send="true"
href="mailto:mamalos@eng.auth.gr" class="">mamalos@eng.auth.gr</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">Hi Adam,<br class="">
<br class="">
The syntax you proposed works great;
warnings have stopped. I'm quite <br
class="">
unsure, though, as to what you've asked me
to test. Could you please be <br class="">
a bit more specific?<br class="">
<br class="">
Thanks again, it seems we've finally made it
(OK, basically, you've made <br class="">
it:))!!<br class="">
<br class="">
On 17/09/2015 02:37 μμ, Field A.N. wrote:<br
class="">
<blockquote type="cite" class="">Hmmmm....
In get_property_defaults, change to this
kind of thing and see what happens
(particularly test for when no get_value
function is defined in the field
definition):<br class="">
<br class="">
<br class="">
$defaults{get_value} =
$EPrints::MetaField::UNDEF;<br class="">
<br class="">
<br class="">
(see <a moz-do-not-send="true"
href="https://github.com/eprints/eprints/blob/3.3/perl_lib/EPrints/MetaField/Namedset.pm#L86"
class="">https://github.com/eprints/eprints/blob/3.3/perl_lib/EPrints/MetaField/Namedset.pm#L86</a>
)<br class="">
<br class="">
--<br class="">
Adam Field<br class="">
Business Relationship Manager and
Community Lead<br class="">
EPrints Services<br class="">
+44 (0)23 8059 8814<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
On 17 Sep 2015, at 09:25, George Mamalakis
wrote:<br class="">
<br class="">
<blockquote type="cite" class="">Adam
thanks,<br class="">
<br class="">
The code seems to work just fine
(tested). My only problem is that I'm
getting a warning about $p_default when
reloading the repo, which I am not sure
where it's referring to, so if you have
any hints it would be great. The
warnings are:<br class="">
<br class="">
$ ./bin/epadmin reload myrepo<br
class="">
Use of uninitialized value $p_default in
string eq at
/usr/share/eprints3/bin/../perl_lib/EPrints/MetaField.pm
line 211.<br class="">
Use of uninitialized value $p_default in
string eq at
/usr/share/eprints3/bin/../perl_lib/EPrints/MetaField.pm
line 213.<br class="">
Use of uninitialized value $p_default in
string ne at
/usr/share/eprints3/bin/../perl_lib/EPrints/MetaField.pm
line 217.<br class="">
defined(@array) is deprecated at
/usr/share/eprints3/lib/plugins/EPrints/Plugin/Screen/BulkAction/Remove.pm
line 46.<br class="">
(Maybe you should just omit the
defined()?)<br class="">
<br class="">
<br class="">
Thanks again for all the help!! As far
as multilingual fields is concerned I
think we're really getting there! Any
other problems (like the import problem
that arose) that someone foresees are
welcome, so as to address them before
making the bazaar package (and updating
the wiki).<br class="">
<br class="">
<br class="">
On 15/09/2015 09:31 μμ, Adam Field
wrote:<br class="">
<blockquote type="cite" class="">Hi
George<br class="">
<br class="">
<br class="">
<br class="">
Yes, you're right, you already pretty
much solved the problem. I'm rushing
through my email and not paying enough
attention.<br class="">
<br class="">
<br class="">
<br class="">
The other thing you missed was that if
there are three languages set in the
multilang field, and someone calls
set_value on title, it will overwrite
everything. You did, however, do
better testing on language than I did,
so you should probably incorporate
that.<br class="">
<br class="">
<br class="">
<br class="">
Once you have this finished, perhaps
we could put the new metafield in a
bazaar package so that others can
deploy it easily.<br class="">
<br class="">
--<br class="">
Adam Field<br class="">
Business Relationship Manager and
Community Lead<br class="">
EPrints Services<br class="">
<br class="">
<blockquote type="cite" class="">On 15
Sep 2015, at 18:51, George Mamalakis
<<a moz-do-not-send="true"
href="mailto:mamalos@eng.auth.gr"
class="">mamalos@eng.auth.gr</a>>
wrote:<br class="">
<br class="">
Adam hi!<br class="">
<br class="">
Don't apologise, I know you had been
busy since I had read the emails
regarding the hack-day and saw your
absent in the list. I'll test your
code tomorrow at work and see if it
works. The way I see it, it is
similar to the code I posted in my
last email, but mine was missing the
get_property_defaults, which might
be the problem.<br class="">
<br class="">
As far as the wiki is concerned,
don't worry, as I promised I'll
write a full guide of how to set the
title and abstract fields to be
multilang, but I'll do it once
everything is tested by my library
staff (our site is not up yet).<br
class="">
<br class="">
Thanks again for your help, I'll
return with feedback tomorrow
evening.<br class="">
<br class="">
George.<br class="">
<br class="">
PS. Your next task is to make a
video showing how to make the Adam
Field to be virtual :)<br class="">
<br class="">
On 15/9/2015 8:19 μμ, Adam Field
wrote:<br class="">
<blockquote type="cite" class="">Sorry,
I had a UKCoRR event, a German
Language User Group Meeting, a
Hack Day and a UK User Group
Meeting all in the last two weeks,
which were my first two weeks back
from Annual Leave!<br class="">
<br class="">
I think we'll need to override
set_value on our Virtualwithvalue
metafield class. Before we added
code to pull values out of another
field. We need code now to insert
values into another field.
Something like this (add it to
the code below in the email of
June 30th):<br class="">
<br class="">
#In the field class
(Virtualwithvalue?)<br class="">
<br class="">
sub set_value<br class="">
{<br class="">
my( $self, $object,
$value ) = @_;<br class="">
if ( defined
$self->get_property("set_value")
)<br class="">
{<br class="">
return
$self->call_property(
"set_value", $object, $value);<br
class="">
}<br class="">
return undef;<br class="">
}<br class="">
<br class="">
...and in get_property_defaults:<br
class="">
<br class="">
$defaults{set_value} = undef;<br
class="">
<br class="">
...then in any field definitions
in the repository config (along
the lines of get_value discussed
previously):<br class="">
<br class="">
set_value => sub<br class="">
{<br class="">
my ($eprint, $value) = @_;<br
class="">
<br class="">
#only use this on imports, NOT if
the value is already set<br
class="">
if
($eprint->is_set('ml_title'))<br
class="">
{<br class="">
return;<br class="">
}<br class="">
<br class="">
$eprint->set_value('title_ml',
[text => '$value', lang =>
$c->{defaultlanguage} ]);<br
class="">
}<br class="">
<br class="">
<br class="">
I leave is as an exercise for the
reader to debug the above code,
which hasn't even been parsed, let
alone tested.<br class="">
<br class="">
Please feedback with tested code,
and some documentation on the wiki
:)<br class="">
<br class="">
--<br class="">
Adam Field<br class="">
Business Relationship Manager and
Community Lead<br class="">
EPrints Services<br class="">
<br class="">
<blockquote type="cite" class="">On
9 Sep 2015, at 12:49, George
Mamalakis <<a
moz-do-not-send="true"
href="mailto:mamalos@eng.auth.gr"
class="">mamalos@eng.auth.gr</a>>
wrote:<br class="">
<br class="">
Yeah, this is whom I'm waiting
for...:):)<br class="">
<br class="">
On 09/09/2015 01:15 μμ, alen
vodopijevec wrote:<br class="">
<blockquote type="cite" class="">Hmm..
maybe using similar function
that you have in 'title' filed<br
class="">
definition.. I'm not sure in
this moment, but it's a good
idea and will<br class="">
check out.<br class="">
<br class="">
.. Adam would surely know
better :)<br class="">
<br class="">
--<br class="">
alen<br class="">
<br class="">
On 09/09/2015 11:16 AM, George
Mamalakis wrote:<br class="">
<blockquote type="cite"
class="">Hi Alen,<br
class="">
<br class="">
I think that through the use
of virtual fields, there
could be a way to<br
class="">
finally assign values in the
appropriate fields (via some
function), but<br class="">
I'm not sure which function
I have to override. And I am
talking about<br class="">
virtual fields, because in
our multilingual solution we
have created<br class="">
additional multilingual
fields for title and
abstract, and have replaced<br
class="">
original the fields with
virtual counterparts that
calculate their<br class="">
values through code. Hence
my assumption on storing
their values as well.<br
class="">
<br class="">
Thanks for your help!<br
class="">
<br class="">
On 09/09/2015 11:52 πμ, alen
vodopijevec wrote:<br
class="">
<blockquote type="cite"
class="">Hi!<br class="">
<br class="">
You will have to override
default import plugins,
ie. copy original ones<br
class="">
and make them write to new
multilang field(s).<br
class="">
<br class="">
I've made a mistake a long
time ago with changing
original title,<br
class="">
abstract, keyword fileds
into multilang so we are
still coping with it :))<br
class="">
<br class="">
Kind regards,<br class="">
Alen<br class="">
--<br class="">
<a moz-do-not-send="true"
href="http://fulir.irb.hr/" class="">http://fulir.irb.hr</a><br class="">
<br class="">
On 09/09/2015 10:34 AM,
George Mamalakis wrote:<br
class="">
<blockquote type="cite"
class="">Hello
everybody, and wishes
for a happy
academical-year!<br
class="">
<br class="">
I am returning to the
subject of multilang
fields when the title
and<br class="">
subject are created in
the way described in the
last mail of this<br
class="">
thread, because of a
problem that arises when
import plugins are used.<br
class="">
<br class="">
As I was informed by our
library staff, when they
wanted to import (eg.<br
class="">
BibTeX) a document, the
title and abstract
fields were not filled.
I<br class="">
tried it myself (through
the web interface) and
they were true (no<br
class="">
errors in apache). I
suppose that the import
plugins use the title
and<br class="">
abstract field to write
data, but in our case
these fields are
virtual,<br class="">
so I have no idea how
they handle inserts.<br
class="">
<br class="">
Any idea and help would
be greatly appreciated,
since not being use<br
class="">
EPrints import
functionality,
practically renders the
creation of basic<br
class="">
multilang fields (title
and abstract) created in
that way unusable.<br
class="">
<br class="">
Thanks all in advance!<br
class="">
<br class="">
On 01/07/2015 01:05 μμ,
George Mamalakis wrote:<br
class="">
<blockquote type="cite"
class="">OK,<br
class="">
<br class="">
I'll keep it in mind.<br
class="">
<br class="">
Thanks<br class="">
<br class="">
On 01/07/2015 12:15
μμ, Field A.N. wrote:<br
class="">
<blockquote
type="cite" class="">You
don't have a
render_value
property, but a
quick scan of the
MetaField object
suggests that you
might not need one
if you're just
making a text node
from the value. Not
100% sure though --
if it works, then
don't worry about it
:)<br class="">
<br class="">
<br class="">
--<br class="">
Adam Field<br
class="">
Business
Relationship Manager
and Community Lead<br
class="">
EPrints Services<br
class="">
+44 (0)23 8059 8814<br
class="">
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
On 30 Jun 2015, at
16:39, George
Mamalakis wrote:<br
class="">
<br class="">
<blockquote
type="cite"
class="">OK, it's
done.<br class="">
<br class="">
I'll upload the
procedure on the
wiki when I finish
with my project
(it'll be after
the summer) or if
I find free time
in the meantime.<br
class="">
<br class="">
The general steps
are (in order to
replace the title
field in this
example):<br
class="">
<br class="">
1) Create a
MetaField which
returns a value (
~eprints/lib/plugins/EPrints/MetaField/Virtualwithvalue.pm)
containing the
code found in
Adam's video:<br
class="">
<br class="">
package
EPrints::MetaField::Virtualwithvalue;<br
class="">
<br class="">
use strict;<br
class="">
use warnings;<br
class="">
<br class="">
use
EPrints::MetaField;<br
class="">
<br class="">
our @ISA = qw(
EPrints::MetaField
);<br class="">
<br class="">
use strict;<br
class="">
<br class="">
sub
get_property_defaults<br
class="">
{<br class="">
my (
$self ) = @_;<br
class="">
my
%defaults =
$self->SUPER::get_property_defaults;<br
class="">
$defaults{get_value}
= undef;<br
class="">
return
%defaults;<br
class="">
}<br class="">
<br class="">
sub get_value<br
class="">
{<br class="">
my(
$self, $object ) =
@_;<br class="">
if (
defined
$self->get_property("get_value")
)<br class="">
{<br
class="">
return
$self->call_property(
"get_value",
$object);<br
class="">
}<br
class="">
return
undef;<br class="">
}<br class="">
<br class="">
2) Change
./archives/myarchive/cfg/cfg.d/eprint_fields.pl
to contain the new
fields (ml_title
and the new title
field (which is
based on our newly
created MetaField
derivative)), ie:<br
class="">
<br class="">
{<br class="">
name
=> 'ml_title',<br
class="">
type
=> 'multilang',<br
class="">
multiple
=> 1,<br
class="">
fields
=> [ { sub_name
=> "text", type
=> "longtext",
input_rows =>
3,
make_single_value_orderkey
=>
'EPrints::Extras::english_title_orderkey'
} ],<br class="">
input_add_boxes
=> 1,<br
class="">
},<br class="">
<br class="">
{<br class="">
name
=> 'title',<br
class="">
type
=>
'virtualwithvalue',<br
class="">
virtual
=> 1,<br
class="">
<br class="">
get_value
=> sub<br
class="">
{<br
class="">
my
($eprint) = @_;<br
class="">
if
($eprint->is_set('ml_title'))<br
class="">
{<br
class="">
my
$vals =
$eprint->get_value('ml_title');<br
class="">
my
$title = '';<br
class="">
#
set the default
lang's text as
title<br class="">
foreach
my $v1 (@{$vals})<br
class="">
{<br
class="">
if
(%$v1{'lang'} eq
$c->{defaultlanguage})<br
class="">
{<br class="">
$title
= %$v1{'text'};<br
class="">
}<br class="">
}<br
class="">
#
if not a default
lang found, get
the first object's
text as title<br
class="">
if
($title eq '')<br
class="">
{<br
class="">
$title
=
${$$vals[0]}{'text'}
;<br class="">
}<br
class="">
return
$title;<br
class="">
<br class="">
}<br
class="">
return
undef;<br class="">
}<br
class="">
},<br class="">
<br class="">
3) Update your
archive in order
to create the new
field:<br class="">
<br class="">
$ ./bin/epadmin
update myarchive<br
class="">
<br class="">
4) Add the
appropriate
phrases in
~/archives/myarchive/cfg/lang/en/phrases/local.xml
(and do it for any
other language you
may have):<br
class="">
<br class="">
<!-- multilang
title related
phrases --><br
class="">
<epp:phrase
id="eprint_fieldname_ml_title">Title</epp:phrase><br class="">
<epp:phrase
id="eprint_fieldname_ml_title_text">Text</epp:phrase><br
class="">
<epp:phrase
id="eprint_fieldname_ml_title_lang">Language</epp:phrase><br
class="">
<epp:phrase
id="eprint_fieldhelp_ml_title">The
title of the item.
The title should
not end with a
full stop, but may
end with a
question mark.
There is no way to
make italic text,
please enter it
normally. If you
have a subtitle,
it should be
preceded with a
colon [:]. Use
capitals only for
the first word and
for proper nouns.<br
class="">
<br/>Example:
<span
class="ep_form_example">A
brief history of
time</span><br
class="">
<br/>Example:
<span
class="ep_form_example">Life:
an unauthorised
biography</span><br
class="">
<br/>Example:
<span
class="ep_form_example">Mathematics
for engineers and
scientists. 5th
edition</span><br
class="">
<br/>Example:
<span
class="ep_form_example">Ecosystems
of the world. Vol.
26. Estuaries of
the
world</span><br
class="">
</epp:phrase><br class="">
<br class="">
5) Add (and
remove) the
appropriate
entries in you
workflows
(~/archives/myarchive/cfg/workflows/eprint/default.xml)
in the "core"
section:<br
class="">
<br class="">
<!--
<component><field
ref="title"
required="yes"
input_lookup_url="{$config{rel_cgipath}}/users/lookup/title_duplicates"
input_lookup_params="id={eprintid}&amp;dataset=eprint&amp;field=title"
/></component><br class="">
--><br class="">
<component><field
ref="ml_title"
required="yes"/></component><br
class="">
<br class="">
6) Test and reload
your archive for
your changes to
take effect:<br
class="">
$ ./bin/epadmin
test<br class="">
$ ./bin/epadmin
reload myarchive<br
class="">
<br class="">
<br class="">
Thanks everyone
for the help, and
especially Tim and
Adam for making it
possible!! :):)<br
class="">
<br class="">
<br class="">
PS. Hope I haven't
forgotten
anything...:)<br
class="">
<br class="">
<br class="">
On 26/06/2015
05:27 μμ, George
Mamalakis wrote:<br
class="">
<blockquote
type="cite"
class="">Tim,<br
class="">
<br class="">
Now that I got
illuminated
(:-P) by the
video regarding
EPrints' virtual
fields, I am
trying to think
how I could take
advantage of
them in order to
use to solve my
multilanguage-fields
problem, and I
think I'm a bit
stuck.<br
class="">
<br class="">
I'll speak my
thoughts out
loud and please
correct me if
I'm wrong. Let
the target field
be the "title".<br
class="">
<br class="">
So, we need the
title to be
stored in more
than one
languages in the
database, which
should be
"easily"
accomplished
using a
multi-row field.
Hence, multilang
fields are a
perfect
candidate for
this. We
therefore create
a new field,
let's say
ml_title (as you
proposed) and
store our values
in it. Now, in
order for
EPrints not to
break, we change
the title
field
to be a virtual
field and
compose its
output based on
ml_title field.
In the end,
we'll have two
fields for the
title. The title
field (of type
virtualfield)
that will be
calculating its
value each time
it's called, and
the ml_title
field (of type
multilang). Is
that correct?<br
class="">
<br class="">
Now that I've
written my
thoughts, I
think I'm no
more stuck and I
see that your
idea is
brilliant and
very easy!!
:):). And if the
above paragraph
is not your
idea, and it's
even easier than
that, then it'll
be even more
brilliant!! :):)<br
class="">
<br class="">
Cheers again,
I'll give it a
try on Monday!<br
class="">
<br class="">
Once again, nice
work Adam and
thanks Tim and
all of you for
your help!<br
class="">
<br class="">
PS. It would be
extremely
beneficial if
there were a
guide as to how
EPrints'
internals work.
Something that
is a little be
more explanatory
than the
"anatomy of a
request (<a
moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://wiki.eprints.org/w/Anatomy_of_a_request">http://wiki.eprints.org/w/Anatomy_of_a_request</a>)"
and explain how
the coders of
EPrints really
think of EPrints
in their minds.<br
class="">
<br class="">
On 25/06/2015
11:42 πμ,
Timothy
Miles-Board
wrote:<br
class="">
<blockquote
type="cite"
class="">The
"problem" is
that when you
ask
$eprint->get_value()
for the value
of a multilang
field it gives
you a perl
data structure
- in this case
arrayref
(array of
{langcode=>text}
hashrefs) -
ie. the same
behaviour as
you would
expect for a
compound field
or any field
with a
multiple
value.<br
class="">
<br class="">
$eprint->get_value()
is used
everywhere -
including in
export
plugins. So
any field
where the
plugin
implicitly
expects a
string - like
title,
abstract etc -
it will output
something like
ARRAYx01123123<br
class="">
<br class="">
So your
options are:<br
class="">
<br class="">
* Fix up all
the plugins to
be cleverer
about how they
get the "best"
value of
multilang
field (ie. use
get_value()
then look at
the user's
lang / default
lang to pull
out the best
string from
the multilang
structure) -
but this would
mean repeating
the same
routine in
every plugin..<br
class="">
<br class="">
* Change the
way that
get_value()
works so that
it somehow
decides which
behaviour to
use (arrayref
vs best lang
string) based
on calling
context etc. -
get_value is
used
everywhere in
EPrints so
this would
probably break
everything..<br
class="">
<br class="">
* Add a layer
of abstraction
between the
low level
get_value()
and the
plugins that
defines an API
for returning
language
dependent
strings - then
change all the
plugins
to use that
(so instead of
get_value(),
plugins could
call
get_lang_string()
or something -
something like
this would be
the best
approach...<br
class="">
<br class="">
In the
meantime, what
you could do
is instead of
changing the
default title,
abstract etc
fields, just
define new
multilang
versions.<br
class="">
<br class="">
So eg.
ml_title,
ml_abstract
...<br
class="">
<br class="">
Then use these
in your
workflow
instead of the
default title,
abstract ..
etc.<br
class="">
<br class="">
Finally in
eprint_fields_automatic.pl,
write some
code to take
the ml_*
fields and
populate the
equivalent
scalar fields.
So eg. get the
value of
ml_title, pull
out the text
in the default
language (or
if the default
language
version is not
defined, some
other language
in order of
preference -
the
EPrints::Language
module already
does stuff
like this with
phrases) and
write that
value into the
title field.<br
class="">
<br class="">
Then anything
that expects
$eprint->get_value(
"title" ) to
return a
string will be
happy (albeit
they will
always give
the
default/preferred
language).<br
class="">
<br class="">
Or...<br
class="">
<br class="">
Change the
default title,
abstract etc.
fields to a
virtual field
so that you
can
dynamically
work out the
(string) value
by looking at
ml_title,
ml_abstract
etc - as long
as the value
returned is
always a
string this
shouldn't
break
anything.<br
class="">
<br class="">
Food for
thought I
hope,<br
class="">
<br class="">
Tim<br
class="">
<br class="">
Timothy
Miles-Board<br
class="">
Web &
Repositories
Development
Specialist,
University of
London
Computer
Centre<br
class="">
020 7863 1342
| 07742 970
351 | <a
moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:timothy.miles-board@london.ac.uk">timothy.miles-board@london.ac.uk</a>
| @drtjmb<br
class="">
The University
of London is
an exempt
charity in
England and
Wales<br
class="">
<br class="">
<br class="">
From: <a
moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:eprints-tech-bounces@ecs.soton.ac.uk">eprints-tech-bounces@ecs.soton.ac.uk</a>
<a
moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:eprints-tech-bounces@ecs.soton.ac.uk"><eprints-tech-bounces@ecs.soton.ac.uk></a>
on behalf of
George
Mamalakis <a
moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="mailto:mamalos@eng.auth.gr"><mamalos@eng.auth.gr></a><br
class="">
Sent: 25 June
2015 8:38 AM<br
class="">
To: <a
moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:eprints-tech@ecs.soton.ac.uk">eprints-tech@ecs.soton.ac.uk</a><br
class="">
Subject:
[EP-tech] Re:
[spam?] Re:
How to set a
field to be
multilang<br
class="">
<br class="">
Thanks Alen,
I'll look into
it deeper.<br
class="">
<br class="">
It's sad,
though, that
default
Import/Export
plugins break.
Could you give
a few hints on
how to
customise
these plugins?
(general
guidelines).
Could the
changes be
applied on the
parent Import
and Export
plugin, or
most child
plugins tend
to override
functions
dealing with
title,
abstract, etc?<br
class="">
<br class="">
And that being
the case,
isn't it
equivalent to
adding extra
fields for an
additional
language?
Either way
same things
are broken,
right? :)<br
class="">
<br class="">
Lastly, where
are these
metadata
fields stored
in the
database?
Reading the
article in the
link you
provided
diagonally, it
seems that I
need to update
the database
in order to
create
them, right?<br
class="">
<br class="">
Thanks again!<br
class="">
<br class="">
On 24/06/2015
11:18 μμ, Alen
Vodopijevec
wrote:<br
class="">
<blockquote
type="cite"
class="">Hi!<br
class="">
<br class="">
You have
Metadata Field
Types
documented
here:<br
class="">
<a
moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://wiki.eprints.org/w/Category:EPrints_Metadata_Fields">http://wiki.eprints.org/w/Category:EPrints_Metadata_Fields</a><br
class="">
<br class="">
But, be aware
that changing
title,
keywords and
abstract
fields to<br
class="">
'compound'
breaks default
EPrints
plugins -
export/import
.. these<br
class="">
plugins expect
title/keywords/abstract
to be simple
and not
compound<br
class="">
(hash) value.<br
class="">
<br class="">
I'm using it
that way but
there is some
extra effort
to customize
and<br
class="">
maintain
import/export
plugins.<br
class="">
<br class="">
If anybody
have a
suggestion or
a better
solution
please let me
know.<br
class="">
<br class="">
Maybe this is
a good
opportunity to
discuss that
i18n issues in
EPrints.<br
class="">
<br class="">
Kind regards,<br
class="">
--<br class="">
Alen<br
class="">
<br class="">
On 06/24/2015
10:15 AM,
George
Mamalakis
wrote:<br
class="">
<blockquote
type="cite"
class="">Ah,<br
class="">
<br class="">
And by the
way, is there
any
documentation
on this
"fields"
attribute<br
class="">
somewhere? Cos
I think it
wasn't
mentioned
anywhere.<br
class="">
<br class="">
Thanks again!<br
class="">
<br class="">
On 24/06/2015
10:29 πμ,
Timothy
Miles-Board
wrote:<br
class="">
<blockquote
type="cite"
class="">----------
Forwarded
message
----------<br
class="">
From: Timothy
Miles-Board <a
moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="mailto:timothy.miles-board@ulcc.ac.uk"><timothy.miles-board@ulcc.ac.uk></a><br
class="">
Date: 18 Jun
2015 11:30 pm<br
class="">
Subject: Re:
[EP-tech] How
to set a field
to be
multilang<br
class="">
To: <a
moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:eprints-tech@ecs.soton.ac.uk">eprints-tech@ecs.soton.ac.uk</a><br
class="">
Cc:<br
class="">
<br class="">
{<br class="">
name =>
'title',<br
class="">
type =>
'multilang',<br
class="">
multiple =>
1,<br class="">
fields => [
{ sub_name
=> "text",
type =>
"longtext",<br
class="">
input_rows
=> 3,
make_single_value_orderkey
=><br
class="">
'EPrints::Extras::english_title_orderkey'
} ],<br
class="">
input_add_boxes
=> 1,<br
class="">
},<br class="">
<br class="">
<br class="">
Tim<br
class="">
<br class="">
On 23 Jun 2015
9:09 am,
George
Mamalakis <a
moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="mailto:mamalos@eng.auth.gr"><mamalos@eng.auth.gr></a>
wrote:<br
class="">
<br class="">
Guys (and
girls),<br
class="">
<br class="">
Any news on
multilingual
fields?
Anybody using
them?<br
class="">
<br class="">
Thanks!<br
class="">
<br class="">
George<br
class="">
<br class="">
On 18/06/2015
06:31 μμ,
George
Mamalakis
wrote:<br
class="">
<blockquote
type="cite"
class="">Hello
again,<br
class="">
<br class="">
I am trying to
make my
EPrints
installation
support<br
class="">
</blockquote>
multilanguage
fields<br
class="">
<blockquote
type="cite"
class="">(eg.
title,
abstract,
etc.). The
thing I did
that worked
(which<br
class="">
</blockquote>
doesn't<br
class="">
<blockquote
type="cite"
class="">feel
right to me,
though) was
adding a new
Metadata field
(eg.<br
class="">
</blockquote>
title_en)<br
class="">
<blockquote
type="cite"
class="">and
add it to the
database and
workflow. On
the
documentation,<br
class="">
</blockquote>
on the<br
class="">
<blockquote
type="cite"
class="">other
hand, I saw
that there is
a Multilang
field type<br
class="">
(./perl_lib/EPrints/MetaField/Multilang.pm)
which should
be<br class="">
</blockquote>
used for<br
class="">
<blockquote
type="cite"
class="">this
purpose. The
strange thing
is that its
perldoc
DESCRIPTION<br
class="">
</blockquote>
section<br
class="">
<blockquote
type="cite"
class="">starts
with "not
done",
probably
meaning that
it's not
implemented?<br
class="">
Disregarding
the last
comment, when
I changed<br
class="">
./archives/myarchive/cfg/cfg.d/eprint_fields.pl
title field to<br
class="">
</blockquote>
read:<br
class="">
<blockquote
type="cite"
class="">{<br
class="">
name =>
'title',<br
class="">
type =>
'multilang',<br
class="">
input_rows
=> 3,<br
class="">
make_single_value_orderkey
=><br
class="">
'EPrints::Extras::english_title_orderkey',<br class="">
},<br class="">
<br class="">
and I reloaded
epadmin, I got
the following
error:<br
class="">
<br class="">
"Error in
field property
for
eprint.title:
fields on a
multilang<br
class="">
metafield
can't be
undefined"<br
class="">
<br class="">
So, which is
the proper way
for adding
multilanguage
support in<br
class="">
</blockquote>
fields<br
class="">
<blockquote
type="cite"
class="">and
display them
in workflows?<br
class="">
<br class="">
Thanks for all
help in
advance!<br
class="">
<br class="">
</blockquote>
-- <br
class="">
George
Mamalakis<br
class="">
<br class="">
IT and
Security
Officer,<br
class="">
Electrical and
Computer
Engineer
(Aristotle
Univ. of
Thessaloniki),<br
class="">
PhD (Aristotle
Univ. of
Thessaloniki),<br
class="">
MSc (Imperial
College of
London)<br
class="">
<br class="">
School of
Electrical and
Computer
Engineering<br
class="">
Aristotle
University of
Thessaloniki<br
class="">
<br class="">
phone number :
+30 (2310)
994379<br
class="">
<br class="">
<br class="">
<br class="">
*** Options:<br
class="">
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class="">
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class="">
*** EPrints
community
wiki: <a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://wiki.eprints.org/">http://wiki.eprints.org/</a><br
class="">
*** EPrints
developers
Forum: <a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://forum.eprints.org/">http://forum.eprints.org/</a><br
class="">
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<br class="">
<br class="">
*** Options:<a
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href="http://mailman.ecs.soton.ac.uk/mailman/listinfo/eprints-tech">http://mailman.ecs.soton.ac.uk/mailman/listinfo/eprints-tech</a><br
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*** Archive:<a
moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://www.eprints.org/tech.php/">http://www.eprints.org/tech.php/</a><br
class="">
*** EPrints
community
wiki:<a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://wiki.eprints.org/">http://wiki.eprints.org/</a><br
class="">
*** EPrints
developers
Forum:<a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://forum.eprints.org/">http://forum.eprints.org/</a><br
class="">
</blockquote>
-- <br
class="">
George
Mamalakis<br
class="">
<br class="">
IT and
Security
Officer,<br
class="">
Electrical and
Computer
Engineer
(Aristotle
Univ. of
Thessaloniki),<br
class="">
PhD (Aristotle
Univ. of
Thessaloniki),<br
class="">
MSc (Imperial
College of
London)<br
class="">
<br class="">
School of
Electrical and
Computer
Engineering<br
class="">
Aristotle
University of
Thessaloniki<br
class="">
<br class="">
phone number :
+30 (2310)
994379<br
class="">
<br class="">
<br class="">
<br class="">
<br class="">
-----------------------------
Upozorenje
-----------------------------<br
class="">
<br class="">
Automatskom
detekcijom
utvrdjeno je
da tekst ove
poruke<br
class="">
podsjeca na
tzv. phishing
poruku.<br
class="">
<br class="">
AKO SE U
PORUCI TRAZI
DA POSALJETE
VASU IRB
LOZINKU ILI<br
class="">
DA UNESETE IRB
PODATKE NA
NAVEDENOM
LINKU, RADI SE
O<br class="">
NAPADU S
CILJEM KRADJE
I ZLOUPOTREBE
PODATAKA.<br
class="">
<br class="">
Centar za
informatiku i
racunarstvo,<br
class="">
Institut
Rudjer
Boskovic<br
class="">
<br class="">
-----------------------------
Upozorenje
-----------------------------<br
class="">
<br class="">
<br class="">
*** Options: <a
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class="">
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class="">
*** EPrints
community
wiki: <a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://wiki.eprints.org/">http://wiki.eprints.org/</a><br
class="">
*** EPrints
developers
Forum: <a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://forum.eprints.org/">http://forum.eprints.org/</a><br
class="">
</blockquote>
-- <br
class="">
Sent from my
Android device
with K-9 Mail.
Please excuse
my brevity.<br
class="">
<br class="">
*** Options: <a
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class="">
<br class="">
*** Archive:<br
class="">
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class="">
<br class="">
*** EPrints
community
wiki:<br
class="">
<a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://wiki.eprints.org/">http://wiki.eprints.org/</a><br
class="">
<br class="">
*** EPrints
developers
Forum:<br
class="">
<a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://forum.eprints.org/">http://forum.eprints.org/</a><br
class="">
</blockquote>
-- <br
class="">
George
Mamalakis<br
class="">
<br class="">
IT and
Security
Officer,<br
class="">
Electrical and
Computer
Engineer
(Aristotle
Univ. of
Thessaloniki),<br
class="">
PhD (Aristotle
Univ. of
Thessaloniki),<br
class="">
MSc (Imperial
College of
London)<br
class="">
<br class="">
School of
Electrical and
Computer
Engineering<br
class="">
Aristotle
University of
Thessaloniki<br
class="">
<br class="">
phone number :
+30 (2310)
994379<br
class="">
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
*** Options: <a
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class="">
<br class="">
*** Archive:<br
class="">
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class="">
<br class="">
*** EPrints
community
wiki:<br
class="">
<a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://wiki.eprints.org/">http://wiki.eprints.org/</a><br
class="">
<br class="">
*** EPrints
developers
Forum:<br
class="">
<a
moz-do-not-send="true"
class="moz-txt-link-freetext" href="http://forum.eprints.org/">http://forum.eprints.org/</a><br
class="">
</blockquote>
-- <br class="">
George Mamalakis<br
class="">
<br class="">
IT and Security
Officer,<br
class="">
Electrical and
Computer
Engineer
(Aristotle Univ.
of
Thessaloniki),<br
class="">
PhD (Aristotle
Univ. of
Thessaloniki),<br
class="">
MSc (Imperial
College of
London)<br
class="">
<br class="">
School of
Electrical and
Computer
Engineering<br
class="">
Aristotle
University of
Thessaloniki<br
class="">
<br class="">
phone number :
+30 (2310)
994379<br
class="">
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
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-- <br class="">
George Mamalakis<br
class="">
<br class="">
IT and Security
Officer,<br
class="">
Electrical and
Computer Engineer
(Aristotle Univ.
of Thessaloniki),<br
class="">
PhD (Aristotle
Univ. of
Thessaloniki),<br
class="">
MSc (Imperial
College of London)<br
class="">
<br class="">
School of
Electrical and
Computer
Engineering<br
class="">
Aristotle
University of
Thessaloniki<br
class="">
<br class="">
phone number : +30
(2310) 994379<br
class="">
<br class="">
<br class="">
<br class="">
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<br class="">
-- <br class="">
George Mamalakis<br class="">
<br class="">
IT and Security Officer,<br
class="">
Electrical and Computer Engineer
(Aristotle Univ. of
Thessaloniki),<br class="">
PhD (Aristotle Univ. of
Thessaloniki),<br class="">
MSc (Imperial College of London)<br
class="">
<br class="">
School of Electrical and
Computer Engineering<br class="">
Aristotle University of
Thessaloniki<br class="">
<br class="">
phone number : +30 (2310) 994379<br
class="">
<br class="">
<br class="">
<br class="">
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<br class="">
-- <br class="">
George Mamalakis<br class="">
<br class="">
IT and Security Officer<br class="">
Electrical and Computer Engineer
(Aristotle Un. of Thessaloniki),<br
class="">
PhD (Aristotle Un. of Thessaloniki),<br
class="">
MSc (Imperial College of London)<br
class="">
<br class="">
Department of Electrical and
Computer Engineering<br class="">
Faculty of Engineering<br class="">
Aristotle University of Thessaloniki<br
class="">
<br class="">
phone number : +30 (2310) 994379<br
class="">
<br class="">
<br class="">
<br class="">
*** Options: <a
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<br class="">
-- <br class="">
George Mamalakis<br class="">
<br class="">
IT and Security Officer,<br class="">
Electrical and Computer Engineer
(Aristotle Univ. of Thessaloniki),<br
class="">
PhD (Aristotle Univ. of Thessaloniki),<br
class="">
MSc (Imperial College of London)<br
class="">
<br class="">
School of Electrical and Computer
Engineering<br class="">
Aristotle University of Thessaloniki<br
class="">
<br class="">
phone number : +30 (2310) 994379<br
class="">
<br class="">
<br class="">
<br class="">
*** Options: <a moz-do-not-send="true"
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<br class="">
<br class="">
-- <br class="">
George Mamalakis<br class="">
<br class="">
IT and Security Officer,<br class="">
Electrical and Computer Engineer (Aristotle
Univ. of Thessaloniki),<br class="">
PhD (Aristotle Univ. of Thessaloniki),<br
class="">
MSc (Imperial College of London)<br class="">
<br class="">
School of Electrical and Computer
Engineering<br class="">
Aristotle University of Thessaloniki<br
class="">
<br class="">
phone number : +30 (2310) 994379<br class="">
<br class="">
<br class="">
<br class="">
*** Options: <a moz-do-not-send="true"
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<br class="">
<pre class="moz-signature" cols="72">--
George Mamalakis
IT and Security Officer,
Electrical and Computer Engineer (Aristotle Univ. of Thessaloniki),
PhD (Aristotle Univ. of Thessaloniki),
MSc (Imperial College of London)
School of Electrical and Computer Engineering
Aristotle University of Thessaloniki
phone number : +30 (2310) 994379
</pre>
</div>
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<br>
<br>
<pre class="moz-signature" cols="72">--
George Mamalakis
IT and Security Officer,
Electrical and Computer Engineer (Aristotle Univ. of Thessaloniki),
PhD (Aristotle Univ. of Thessaloniki),
MSc (Imperial College of London)
School of Electrical and Computer Engineering
Aristotle University of Thessaloniki
phone number : +30 (2310) 994379
</pre>
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