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 field 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

Additional Properties

As for Text fields except for:

Name	Default Value	Required	Description	Notes
input_rows	10	NO	The number of rows for the textarea in the input form.	The default value for this property is taken from cfg.d/field_property_defaults.pl.
maxlength	65535	NO	The maximum number of characters that can be written to the textarea in the input form.	Different from Metadata default (255). Maximum length could be as much as 4294967295 (over 4 billion).

Required Phrases

No additional phrases beyond those required for Text fields.

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',
}