I was wondering if someone (possibly one of the project maintainers) could post an example of how to programmatically create a reference field.

Something along the lines of :

$form['foo'] = array(
  '#type' => 'node_reference',
  ... list of attributes and brief description here ...
);

would be more than sufficient for many of us.

I'm assuming that as a field that uses the Field API, it should be quite easy to add a reference field to a form using the standard Form API, but without any documentation, many of us developers are at a loss to both help respond to questions in this issue queue or to accomplish the functionality that we'd like with References.

Comments

patmacs’s picture

patmacs CreditAttribution: patmacs commented

Subscribing

BrockBoland’s picture

BrockBoland CreditAttribution: BrockBoland commented

Has anyone figured out how to do this? I'm a little shaky on this part of the Form API, but I think that the module would need to implement hook_element_info() in order to make the node or user reference fields available to the Form API for use in custom forms.

lesleyfernandes’s picture

lesleyfernandes CreditAttribution: lesleyfernandes commented
Issue summary: View changes

Someone can help us?

I am creating a custom node type programmatically and I need to add two user reference fields in my .install file, do you have an example of how to create a field and a field instance of it?

Thank you

lesleyfernandes’s picture

lesleyfernandes CreditAttribution: lesleyfernandes commented
Version: 7.x-2.x-dev » 7.x-2.1
Component: Documentation » Code: user_reference
lesleyfernandes’s picture

lesleyfernandes CreditAttribution: lesleyfernandes commented

I found this one for the node reference field:

$field = array(
    "field_name"=>;"field_field_name",
    "label"=>"Field label",
    "type"=>"node_reference",
    "settings"=>array(
      "referenceable_types"=>array(
        "gallery_image"=>"gallery_image"
      ),
    ),
    "cardinality"=>"-1"
  );
 
  field_create_field($field);
 
  $instance = array(
    "field_name"=>"field_field_name",
    "label"=>"Field label",
    "type"=>"node_reference",
    "widget"=>array(
      "type"=>"options_select"
    ),
  );
 
  $instance["entity_type"] = "node";
 
  foreach(array("type1", "type2", "type3") as $type){
    $instance["bundle"] = $type;  
    field_create_instance($instance);
  }

Source: http://numiko.com/labs/2011/12/programmatically-adding-a-node-reference-...

lesleyfernandes’s picture

lesleyfernandes CreditAttribution: lesleyfernandes commented

I did one for user reference:

$field = array(
      'field_name' => 'FIELD_NAME',
      'label' => t('LABEL'),
      'description' => t('DESCRIPTION.'),
      'type' => 'user_reference',
      'settings' => array(
        'referenceable_roles' => array(2 => 'authenticated user'), // for authenticated users
        'referenceable_status' => array(1 => 'active'), // only active users
      ),
      'cardinality' => -1, //ilimited field values
  );
  field_create_field($field);


  $instance = array(
      'field_name' => 'FIELD_NAME',
      'label' => t('LABEL'),
      'description' => t('DESCRIPTION.'),
      'required' => TRUE,
      'type' => 'user_reference',
      'widget' => array(
        'type' => 'userreference_autocomplete',
      ),
      'settings' => array(
        'cardinality' => -1,
      ),
  );


  $instance["entity_type"] = "node";


  foreach(array("type1", "type2", "type3") as $type){
    $instance["bundle"] = $type;  
    field_create_instance($instance);
  }