Dataobjref 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 allows another data object, which belongs to a specified datasetid to be referenced. This is a bit like an Itemref field but allows multiple fields from another data object to be stored with the ID of the data object referenced.

Inheritance

• Metadata
  • Compound field
    • Dataobjref field

Additional Properties

As for Compound fields except for:

Name	Default Value	Required	Description	Notes
datasetid	n/a	YES	The ID of the dataset that reference data object belongs.
input_lookup_url	lookup/dataobjref	NO	The CGI script path to use to lookup data objects.
match	IN	NO	How to match this fields values in searches.	Different to parent default (EQ).
text_index	1	NO	Whether the text for these fields should be indexed.	Different to parent default (0).

Required Phrases

No additional phrases beyond those required for Compound fields.

Database

Itemref fields are stored in the database as

fieldname INT(11)

Examples

Most basic example. (Captures an associated user title with its ID).

{
    name => 'userid',
    type => 'dataobjref',
    datasetid => 'user',
    fields => [ 
        { 
            sub_name => 'title', 
            type => 'text',
        } 
    ],
}

Capture multiple data object references.

{
    name => 'funders',
    type => 'dataobjref,
    datasetid => 'funder',
    multiple => 1,
    fields => [
        { 
            sub_name => 'name',
            type => 'text' 
        },
    ],
}

Use bespoke lookup URL.

{
    name => 'eprintid',
    type => 'dataobjref',
    datasetid => 'eprint',
    input_lookup_url => 'lookup/mydataobjref',
    fields => [ 
        { 
            sub_name => 'title', 
            type => 'text',
        },
        { 
            sub_name => 'date', 
            type => 'date',
        } ,
    ],
}