Base64 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 Base64 encoded data. This may be useful for storing the binary data of small files (e.g. logos, avatars, etc.).

Inheritance

• Metadata field
  • Text field
    • Longtext field
      • Base64 field

Additional Properties

As for Longtext fields except for:

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 beyond those required for Longtext fields.

Database

Base64 fields are stored in the database as

 fieldname LONGTEXT

API

See API page.

Examples

A basic example.

{
   name => 'base64_data',
   type => 'base64',
}

Limit the maximum size of file data that can submitted to 2 MiB.

{
   name => 'file_data',
   type => 'base64',
   maxlength => '2097152',
}

Displayed <textarea> should have a height of five rows for entering this metadata.

{
   name => 'code',
   type => 'base64',
   input_rows=> '5',
}