Longtext 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

This fields store larger text fields (e.g. title abstracts, reference lists, etc.) that cannot be stored in a Text field that only allows a maximum of 255 characters.

Inheritance

• Metadata field
  • Text field
    • Longtext field

Properties

As for Text fields with the following differences...

name	default	description
input_rows	n/a	This property is taken from the repository configuration.
maxlength	65535	Can be overridden in the field definition.

Required Phrases

No additional phrases.

Database

Longtext fields are stored in the database as

fieldname LONGTEXT

API

See API page.

Examples

Most basic example.

{
    name => 'task_purpose',
    type => 'longtext',
}

Give more space, (so all text can be seen at once).

{
    name => 'referencetext',
    type => 'longtext',
    input_rows => 15,
}

Use a special rendering functions to display text in paragraphs.

{
  name => 'abstract',
  type => 'longtext',
  input_rows => 10,
  render_single_value => 'render_paras',
}

Use special ordering for field for English (e.g. ignore indefinite and definite articles, etc.)

{
    name => 'title',
    type => 'longtext',
    input_rows => 3,
    make_single_value_orderkey => 'EPrints::Extras::english_title_orderkey',
}