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@@ -16,59 +16,7 @@ class sep__protocol_widget extends ChadoFieldWidget {
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public static $field_types = ['sep__protocol'];
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/**
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- * Provides the form for editing of this field.
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- *
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- * This function corresponds to the hook_field_widget_form()
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- * function of the Drupal Field API.
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- *
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- * This form is diplayed when the user creates a new entity or edits an
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- * existing entity. If the field is attached to the entity then the form
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- * provided by this function will be displayed.
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- *
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- * At a minimum, the form must have a 'value' element. For Tripal, the
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- * 'value' element of a field always corresponds to the value that is
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- * presented to the end-user either directly on the page (with formatting)
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- * or via web services, or some other mechanism. However, the 'value' is
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- * sometimes not enough for a field. For example, the Tripal Chado module
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- * maps fields to table columns and sometimes those columns are foreign keys
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- * therefore, the Tripal Chado modules does not just use the 'value' but adds
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- * additional elements to help link records via FKs. But even in this case
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- * the 'value' element must always be present in the return form and in such
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- * cases it's value should be set equal to that added in the 'load' function.
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- *
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- * @param $widget
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- * @param $form
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- * The form structure where widgets are being attached to. This might be a
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- * full form structure, or a sub-element of a larger form.
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- * @param $form_state
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- * An associative array containing the current state of the form.
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- * @param $langcode
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- * The language associated with $items.
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- * @param $items
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- * Array of default values for this field.
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- * @param $delta
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- * The order of this item in the array of subelements (0, 1, 2, etc).
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- * @param $element
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- * A form element array containing basic properties for the widget:
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- * - #entity_type: The name of the entity the field is attached to.
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- * - #bundle: The name of the field bundle the field is contained in.
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- * - #field_name: The name of the field.
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- * - #language: The language the field is being edited in.
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- * - #field_parents: The 'parents' space for the field in the form. Most
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- * widgets can simply overlook this property. This identifies the location
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- * where the field values are placed within $form_state['values'], and is
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- * used to access processing information for the field through the
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- * field_form_get_state() and field_form_set_state() functions.
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- * - #columns: A list of field storage columns of the field.
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- * - #title: The sanitized element label for the field instance, ready for
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- * output.
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- * - #description: The sanitized element description for the field instance,
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- * ready for output.
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- * - #required: A Boolean indicating whether the element value is required;
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- * for required multiple value fields, only the first widget's values are
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- * required.
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- * - #delta: The order of this item in the array of subelements; see
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- * $delta above
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+ * @see TripalFieldWidget::form()
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*/
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public function form(&$widget, &$form, &$form_state, $langcode, $items, $delta, $element) {
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parent::form($widget, $form, $form_state, $langcode, $items, $delta, $element);
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@@ -137,7 +85,13 @@ class sep__protocol_widget extends ChadoFieldWidget {
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// Make sure the value is set to the organism_id
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$protocol_id = $form_state['values'][$field_name]['und'][0][$linker_field];
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- $form_state['values'][$field_name]['und'][0]['value'] = $protocol_id;
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+ if ($protocol_id) {
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+ $form_state['values'][$field_name]['und'][0]['value'] = $protocol_id;
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+ }
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+ else {
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+ $form_state['values'][$field_name]['und'][0]['value'] = '__NULL__';
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+ $form_state['values'][$field_name]['und'][0][$linker_field] = '__NULL__';
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+ }
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}
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/**
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Stephen Ficklin