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https://jira.duraspace.org/browse/DS-1232?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Masár updated DS-1232:
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Status: Volunteer Needed (was: Received)
> Metadata internationalization
> -----------------------------
>
> Key: DS-1232
> URL: https://jira.duraspace.org/browse/DS-1232
> Project: DSpace
> Issue Type: Improvement
> Components: DSpace API, Language Packs, XMLUI
> Affects Versions: 1.8.2, 3.0
> Reporter: Nestor Oviedo
> Labels: has-patch, i18n, internationalization, language,
> submission
> Attachments: i18nable-metadata-modified-classes.zip,
> i18nable-metadata.patch, i18nable-metadata-screenshot.png
>
>
> The database schema for the table "metadatavalue" defines a field called
> "text_lang" which indicates the language in which the text of certain tuple
> (single metadata) is written in. This database field is filled on every
> insert with some default value ("en_US") due to DSpace does not provide any
> way to select a different one.
> Here there is a patch to add this functionality, based on the modifications
> we have made to our DSpace installation.
> In a few words, this patch adds a SELECT control to the sumission form, next
> to the respective INPUT or TEXTAREA, in order to allow the user to select the
> correct language for the text. In case of repetible fields, it adds a hidden
> input with the language.
> What was modified?
> - Class "org.dspace.app.util.DCInput" in order to consider a new <i18n>
> element in the input-forms.xml config file. When the element
> <i18n>true</i18n> is present in a field definition, this class now sets a
> flag indicating this field will be internationalizable.
> - Classes "Instance", "Text", "TextArea", "Params" and "Value", all from
> package "org.dspace.app.xmlui.wing.element", in order to accomplish two
> things:
> a) be able to set a flag when the form field is internationalizable: implies
> tagging the Param object associated to the Text or TextArea object that it is
> been constructed. This Param object will be rendered inside the DRI page
> (within the form field definition) with a new attribute "i18nable=yes".
> b) be able to save a language selected by the user: the selected language is
> set in the Text, TextArea or Instance object by adding a new Value object of
> type Value.TYPE_LANG.
> - Classes DescribeStep (from dspace-api and dspace-xmlui-api) in order to
> configure the Text and TextArea objects, and to read the submitted values
> (method readText()).
> - There is a new transformer attached to the Submission aspect, which loads
> the "webui.supported.locales" config property (or "default.locale" that
> property is not defined) and exposes it in the final DRI source, splitted in
> multiple "supporte_language" metadata elements inside <pageMeta>. This only
> when the user enters to the submit form.
> - File forms.xsl (the one from dspace-xmlui-webapp/../themes/dri2xhtml-alt)
> in order to render the SELECT (or hidden input for instances) control when
> the "dri:field" matches the expression "dri:params[@i18nable='yes']". Then it
> takes all the metadata named "supported_locale" from "pageMeta" and creates
> the OPTION elements with those values.
> It is IMPORTANT to note that:
> - The language selection works only for Text or TextArea fields (it has no
> sense in other elements).
> - Not internationalizable fields behave just like they did before this patch
> (the use the default language).
> - This patch won't work with the Reference theme because this theme redefines
> the XSL template "match="dri:field" mode="normalField", which is responsible
> to render the select control. If it is modified, it shoul work well.
> - Values displayed in the select control are internationalizable. This patch
> uses the following syntax to create the i18n codes:
> xmlui.dri2xhtml.METS-1.0.locale.{locale_code}, where "{locale_code}" is the
> language code to translate.
> Attached files:
> You can find the complete patch attached. Also you will find a zip file with
> the modified classes, organized in directories based on the dspace modules
> they belong to.
> There is also a screenshot that shows the expected result on the submission
> form.
> Example of field configuration in input-form.xml file:
> <field>
> <dc-schema>dc</dc-schema>
> <dc-element>title</dc-element>
> <dc-qualifier></dc-qualifier>
> <repeatable>false</repeatable>
> <label>Title</label>
> <input-type>onebox</input-type>
> <hint>Enter the main title of the item.</hint>
> <required>You must enter a main title for this item.</required>
> <i18n>true</i18n>
> </field>
> Excerpt of the resulting DRI page with two internationalizable field:
> dc.title and dc.title.alternative
> <item>
> <field id="aspect.submission.StepTransformer.field.dc_title"
> rend="submit-text" n="dc_title" required="yes" type="text">
> <params i18nable="yes"/>
> <label>Title</label>
> <help>Enter the main title of the item.</help>
> <value type="raw">Main title, in english</value>
> <value type="lang">en</value>
> </field>
> </item>
> <item>
> <field id="aspect.submission.StepTransformer.field.dc_title_alternative"
> rend="submit-text" n="dc_title_alternative" type="text">
> <params i18nable="yes" operations="add delete"/>
> <label>Other Titles</label>
> <help>If the item has any alternative titles, please enter them
> below.</help>
> <instance>
> <value type="raw">Título alternativo, en español</value>
> <value type="lang">es</value>
> </instance>
> </field>
> </item>
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