Multilang field

EPrints 3 Reference: Directory Structure - Metadata Fields - Repository Configuration - XML Config Files - XML Export Format - EPrints data structure - Core API - Data Objects

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Metadata Fields: Arclanguage - Base64 - Bigint - Boolean - Compound - Counter - Dataobjref - Date - Decimal - Email - Fields - Float - Id - Idci - Image - Int - Itemref - Keywords - Langid - Longtext - Longtext_counter - Multilang - Multipart - Name - Namedset - Pagerange - Recaptcha - Recaptcha3 - Relation - Search - Secret - Set - Storable - Subject - Subobject - Text - Time - Timestamp - Url - Uuid

Description

Allows multiple text values to be recorded representing the same text in different languages. This is a sub-class of the Compound field as at least two sub-fields are required. At least one to store the text and one to store the language (sub-field called lang) in which it is written. By default a Multilang field still sets multiple => 0 so if more than only one language will be used for any one record then multiple => 1 also needs to be set.

The languages available for the lang sub-field are specified in the cfg/namedsets/languages file.

Inheritance

• Metadata
  • Compound field
    • Multilang field

Properties

name	default	description
input_boxes	1	as for Metadata but with a different default.
input_ordered	0	as for Metadata but with a different default.

Required Phrases

Rather than needing:

datasetid + "_fieldname_" + fieldname

Multilang fields require the following phrases. The first directly replaces the original fieldname phrase and the second specifies the language used:

datasetid + "_fieldname_" + fieldname + "_" + subfieldname
datasetid + "_fieldname_" + fieldname + "_lang"

As Multilang fields are compound there may be more than two phrases to add depending on the number of subfields specified.

If you were to change the title phrase for an eprint to have type multilang, you would need the phrases:

eprint_fieldname_title_text
eprint_fieldname_title_lang

If you modify the cfg/namedsets/languages file you will need to make sure you add the appropriate additional phrases in the form:

languages_typename_LANGID

E.g. languages_typename_fr_ca could be French Canadian

Database

Multilang fields do not have a standard way of being stored in the database as they are compound fields. The lang sub-field will appear in the dataset table (or separate table if a multiple field) as:

fieldname_lang VARCHAR(16)

API

See API page.

Examples

Most basic example.

{
    name => 'title_multilang',
    type => 'multilang',
    fields => [
        {
            sub_name => 'text',
            type => 'text',
        },
    ],
}

Multiple languages for a single record field.

{
    name => 'title_multilang',
    type => 'multilang',
    multiple => 1,
    fields => [
        {
            sub_name => 'text',
            type => 'text',
        },
    ],
}

More than one non-language sub-field.

{
    name => 'question',
    type => 'multilang',
    multiple => 1,
    fields => [
        {
            sub_name => 'question',
            type => 'longtext',
        },
        {
            sub_name => 'answer',
            type => 'text',
        },
    ],
}