Difference between revisions of "Base64 field"

Revision as of 08:33, 9 April 2023

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

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 - Relation - Search - Secret - Set - Storable - Subject - Subobject - Text - Time - Timestamp - Url - Uuid

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

As for Text 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.

No additional phrases beyond those required for Longtext fields.

Base64 fields are stored in the database as

 fieldname LONGTEXT

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',
}

@@ Line 3: / Line 3: @@
 == Description ==
-Base64 encoded data.
+This field store Base64 encoded data.  This may be useful for storing the binary data of small files (e.g. logos, avatars, etc.).
 == Inheritance ==
@@ Line 12: / Line 12: @@
 == Properties ==
-As for [[text field]]s with the following differences...
+As for [[Text field]]s except for:
 {| border="1" cellpadding="3" cellspacing="0"
@@ Line 23: / Line 23: @@
 == Required Phrases ==
-No additional phrases.
+No additional phrases beyond those required for [[Longtext field]]s.
 == Database ==