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[EP-tech] Error on New Metadata Field

Hi Izwan,

I was wrong.? It was actually some code I added fairly recently to solve 
a long standing problem with subject fields.? This problem being that 
you want to stop people using a particular subject option for future 
records but you want existing records to still be able to use this 
option.? Technically, all you should just need to set the subject as 
undepositable and when the subject field is displayed with the special 
rendered input, like the Subjects stage of the workflow, this does the 
job.? (It won't allow you to select it if it is not already selected but 
it won't unselect it when you save the record).? However, when you have 
a subject field with the standard select input box, you could deselect 
these no longer depositable options without realising. If you are to 
unset these, you want the user to have deliberately deselected them.

The following GitHub issue deals with this problem:

https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Feprints%2Feprints3.4%2Fissues%2F144&data=04%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7Caa7da83410c24b2f461208d9744cc5ae%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C637668695339766373%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2Bj2ES%2FlzIMR2pLGI61mybP4N7ILFbqx%2BXyOTo3hfTOs%3D&reserved=0

I have just pushed the following patch to fix the problem you reported 
and another I noticed whilst trying to fix this:

https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Feprints%2Feprints3.4%2Fcommit%2F41f6f199d7abb753a3d180aabde6a0c482825ff8&data=04%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7Caa7da83410c24b2f461208d9744cc5ae%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C637668695339766373%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=x7to7gfp%2B6qxAynHac7PtS65I8LlwfwTnYKqJWG%2F23w%3D&reserved=0

I will update the EPrints 3.4.3 wiki page [1] to add this patch.

Regards

David Newman

[1] https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.eprints.org%2Fw%2FEPrints_3.4.3&data=04%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7Caa7da83410c24b2f461208d9744cc5ae%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C637668695339766373%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=yKh70dpLQK7AdAdMfA%2ByL6oJymxwDpYByah3qhzJBb4%3D&reserved=0


On 10/09/2021 11:08, David R Newman via Eprints-tech wrote:
>
> Hi Izwan,
>
> I have been able to reproduce this bug but I cannot quite understand 
> why this would lead to an error as it calls a function that is not 
> called by other subject fields.? I will need to dig a little deeper to 
> get to the bottom of this. I would not be surprised if this is a 
> rather long standing bug as usually MetaFields are added from the 
> command line and the occasional times MetaFields are added via the web 
> interface, Subject MetaFields are an unusual type to add.
>
> Regards
>
> David Newman
>
> On 10/09/2021 00:32, MOHD.IZWAN SALIM wrote:
>> *CAUTION:* This e-mail originated outside the University of Southampton.
>> Dear David and EP Team
>>
>> I have the journal list in Subject :
>>
>> image.png
>> Regards
>>
>> *Izwan*
>> UiTM Digital Library
>>
>>
>> On Thu, Sep 9, 2021 at 11:49 PM David R Newman <drn at ecs.soton.ac.uk 
>> <mailto:drn at ecs.soton.ac.uk>> wrote:
>>
>>     Hi Izwan,
>>
>>     I suspect the issue is that the parent subject with the ID
>>     'journal' does not exist.? Click on the Admin link in your menu
>>     and in then "Config. Tools" tab on the Admin page click on the
>>     "Edit subject" button. You will need to create a 'journal'
>>     subject.? You can do this by adding the word 'journal' in the
>>     input box next to "Subject ID String" and then clicking on the
>>     "Create" button.? You will then need assign a label for this
>>     subject (e.g. Journals) and set whether it should be depositable
>>     (probably not, as this is a parent subject).? You will then need
>>     to add subjects under this parent 'journal' subject for all the
>>     journals you want a user to be able to choose from for this
>>     'journal_in_university' field.? I would try to use a consistent
>>     format for these journal subject IDs like jrnl_nature for the
>>     Nature journal.
>>
>>     Regards
>>
>>     David Newman
>>
>>     On 09/09/2021 16:30, MOHD.IZWAN SALIM via Eprints-tech wrote:
>>>     *CAUTION:* This e-mail originated outside the University of
>>>     Southampton.
>>>     Dear all, I added a new field from Manage Metadata Fields -
>>>     Eprints page. with type subjects. After i added the field in
>>>     workflow, the system show?Internal Server Error with error log
>>>
>>>     [Thu Sep 09 15:22:46.543546 2021] [:error] [pid 109882:tid
>>>     139759477307136] Can't use an undefined value as an ARRAY
>>>     reference at
>>>     /usr/share/eprints/perl_lib/EPrints/MetaField/Subject.pm line 128.\n
>>>
>>>     The zz_webcfg_eprint_fields.pl
>>>     <https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fzz_webcfg_eprint_fields.pl%2F&amp;data=04%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7Caa7da83410c24b2f461208d9744cc5ae%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C637668695339766373%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=6ihkzpG55etWVu7NYejDVBVgJ0sULD5tpbewmU9ZJew%3D&amp;reserved=0>
>>>     setting is
>>>     ? 'allow_null' => '1',
>>>     ? 'export_as_xml' => '0',
>>>     ? 'input_boxes' => 3,
>>>     ? 'input_cols' => 60,
>>>     ? 'input_ordered' => 0,
>>>     ? 'input_rows' => 10,
>>>     ? 'input_style' => 0,
>>>     ? 'maxlength' => 255,
>>>     ? 'multiple' => '0',
>>>     ? 'name' => 'journal_in_university',
>>>     ? 'provenance' => 'user',
>>>     ? 'required' => '1',
>>>     ? 'sql_index' => '1',
>>>     ? 'top' => 'journal',
>>>     ? 'type' => 'subject',
>>>     ? 'volatile' => '0'
>>>
>>>     The new field existed in the database. Did i miss to run
>>>     something here?
>>>
>>>     Regards
>>>
>>>     *Izwan*
>>>     UiTM Digital Library
>>>
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>>>     kegunaan penerima yang dinyatakan di atas dan mungkin
>>>     mengandungi maklumat yang tidak umum, bermilik, istimewa, sulit
>>>     dan dikecualikan dari penzahiran di bawah undang-undang yang
>>>     terpakai termasuklah Akta Rahsia Rasmi 1972. BACA SELANJUTNYA...
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>>
>> *PENAFIAN: *E-mel ini dan apa-apa fail yang dihantar bersama-samanya 
>> ("Mesej") adalah dihasratkan hanya untuk kegunaan penerima yang 
>> dinyatakan di atas dan mungkin mengandungi maklumat yang tidak umum, 
>> bermilik, istimewa, sulit dan dikecualikan dari penzahiran di bawah 
>> undang-undang yang terpakai termasuklah Akta Rahsia Rasmi 1972. BACA 
>> SELANJUTNYA... 
>> <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmail.uitm.edu.my%2Findex.php%2Fcomponent%2Fcontent%2Farticle%3Fid%3D2%26Itemid%3D103&amp;data=04%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7Caa7da83410c24b2f461208d9744cc5ae%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C637668695339776324%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=RvdcQE28qa1uyP5%2FONsr8lwGT4GA7oR5n2JDIFHUcl0%3D&amp;reserved=0>
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