You shouldn't install this module unless it is a dependency of another module you are using or you are a developer.

Usage

To expose your own entity properties perform the following steps.

Add the extra fields controller class (EntityPropertyExtraFieldsController)
to the entity info that contains the properties that you want to expose.
You can do this just adding a new key in your hook_entity_info(), or you
can implement hook_entity_info_alter().

'extra fields controller class' => 'EntityPropertyExtraFieldsController'

See the docs on d.o for more info.

In hook_entity_property_info() add an key called 'extra_fields' to each
element in the property array. The value should be an array which contains
values of form and/or display, which indicate that the property
should be available in the edit form and/or the display, respectively.

Alternatively this can be added via hook_entity_property_info_alter().

Examples

// Exposes property in create/edit form.
'extra_fields' => array('form'),

// Exposes property as an option in display.
'extra_fields' => array('display'),

// Exposes property in both the form and display.
'extra_fields' => array('form', 'display'),

Complete property example:

$properties['vid'] = array(
    'label' => t('Revision ID'),
    'type' => 'integer',
    'description' => t('The unique revision identifier.'),
    'schema field' => 'vid',
    'extra_fields' => array('form', 'display'),
);

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