ISTWCMS-5880: adding the custom validation for banners

uw_cfg_common.module

@@ -928,7 +928,7 @@ function uw_cfg_common_form_alter(array &$form, FormStateInterface $form_state,
       ],
     ];
 
-    // Set the states for the banner.
+    // Set the states for the banner settings.
     $form['group_banner_settings']['#states'] = [
       'visible' => [
         [
@@ -938,6 +938,9 @@ function uw_cfg_common_form_alter(array &$form, FormStateInterface $form_state,
         ],
       ],
     ];
+
+    // Add our custom validation for banners.
+    $form['#validate'][] = '_uw_cfg_common_banner_validate';
   }
 
   // If we are on the media upload form, we want to restrict
@@ -1040,6 +1043,69 @@ function _uw_cfg_common_alias_validate(array &$form, FormStateInterface $form_st
   }
 }
 
+/**
+ * Validates submission values for banners on nodes.
+ */
+function _uw_cfg_common_banner_validate(array &$form, FormStateInterface $form_state) {
+
+  // Get the values of the form state.
+  $values = $form_state->getValues();
+
+  // If there is a type of media set and it is banners,
+  // then perform the validation.
+  if (
+    isset($values['field_uw_type_of_media']) &&
+    $values['field_uw_type_of_media'][0]['value'] == 'banner'
+  ) {
+
+    // Since the add more button is in the values, and there is
+    // a mix of integers and strings as keys, we need to count
+    // the array keys and if it is less than or equal to one
+    // means that the user has not entered a banner at all.
+    if (count(array_keys($values['field_uw_banner'])) <= 1) {
+
+      $form_state->setError($form['field_uw_banner'], t('You must add at least one banner.'));
+    }
+    // At least one banner, now check that there is an
+    // image in each banner.
+    else {
+
+      // Step through all the values of banners and check for an image.
+      foreach ($values['field_uw_banner'] as $key => $value) {
+
+        // Ensure that the key is an integer, since there is an add_more
+        // in the values.
+        if (is_int($key)) {
+
+          // If there is no selection on the media, then there is no image,
+          // so set the error.
+          // @TO-DO: fix so that inline errors show.
+          if (!isset($value['subform']['field_uw_ban_image']['selection'])) {
+
+            // Set the error that an image is missing.
+            $form_state->setError($form['field_uw_banner']['widget'][$key]['subform']['field_uw_ban_image'], t('Banner image field is required.'));
+          }
+        }
+      }
+    }
+  }
+}
+
+/**
+ * Implements hook_field_widget_WIDGET_TYPE_form_alter().
+ */
+function uw_cfg_common_field_widget_entity_reference_paragraphs_form_alter(&$element, &$form_state, $context) {
+  if ($element['#paragraph_type'] == 'uw_para_image_banner') {
+    if (!isset($context['form']['#block'])) {
+      $element['subform']['field_uw_ban_image']['widget']['#attributes']['class'] = 'form-required js-form-required';
+    }
+    else {
+      $element['subform']['field_uw_ban_image']['widget']['#required'] = TRUE;
+    }
+  }
+}
+
+
 /**
  * Implements hook_field_widget_WIDGET_TYPE_form_alter().
  */