Filter farm location reference by asset type

Problem/Motivation

Right now the farm farm_location_reference view is a simple Entity Reference List of any location asset (where is_location = True). It would be nice if this could also filter by the asset type, so as to only display structure or land asset locations.

I tried configuring the asset_type as an exposed filter but it did not work. Configuring this as a contextual filter should work instead.

Steps to reproduce

N/A

Proposed resolution

Configure an asset_type contextual filter on the farm_location_reference view:

• If no filter is provided display all (default behavior)
• Use validation criteria to ensure valid asset_type
• Allow multiple values to be specified

This can then be configured in a entity_autocomplete form field with the following:

    // Location field.
    $form['location'] = [
      '#type' => 'entity_autocomplete',
      '#title' => $this->t('Structure or land location'),
      '#target_type' => 'asset',
      '#selection_handler' => 'views',
      '#selection_settings' => [
        'view' => [
          'view_name' => 'farm_location_reference',
          'display_name' => 'entity_reference',
          'arguments' => ['structure+land'],
        ],
        'match_operator' => 'CONTAINS',
        'match_limit' => 10,
      ],
      '#multiple' => TRUE,
    ];

Remaining tasks

Implement

User interface changes

None.

API changes

None.

Data model changes

None.