Issue #3290993 by paul121: Add "Move asset" button next to the current location field

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - [Issue #3290929: Provide a farmOS map form element](https://www.drupal.org/project/farm/issues/3290929)
+- [Issue #3290993: Add "Move asset" button next to the current location field](https://www.drupal.org/project/farm/issues/3290993)
 
 ### Security
 

modules/core/location/farm_location.base_fields.inc

@@ -23,8 +23,15 @@ function farm_location_asset_base_fields() {
     'multiple' => TRUE,
     'computed' => AssetLocationItemList::class,
     'hidden' => 'form',
-    'weight' => [
-      'view' => 95,
+    'view_display_options' => [
+      'label' => 'inline',
+      'type' => 'asset_current_location',
+      'settings' => [
+        'link' => TRUE,
+        'render_without_location' => TRUE,
+        'move_asset_button' => TRUE,
+      ],
+      'weight' => 95,
     ],
   ];
   $fields['location'] = \Drupal::service('farm_field.factory')->baseFieldDefinition($options);

modules/core/location/src/Form/AssetMoveActionForm.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\farm_location\Form;
 
+use Drupal\asset\Entity\AssetInterface;
 use Drupal\Core\Datetime\DrupalDateTime;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Form\ConfirmFormBase;
@@ -127,8 +128,27 @@ class AssetMoveActionForm extends ConfirmFormBase {
    * {@inheritdoc}
    */
   public function buildForm(array $form, FormStateInterface $form_state) {
+
+    // Check if asset IDs were provided in the asset query param.
+    $request = \Drupal::request();
+    if ($asset_ids = $request->get('asset')) {
+
+      // Wrap in an array, if necessary.
+      if (!is_array($asset_ids)) {
+        $asset_ids = [$asset_ids];
+      }
+
+      // Add each asset the user has view access to.
+      $this->entities = array_filter($this->entityTypeManager->getStorage('asset')->loadMultiple($asset_ids), function (AssetInterface $asset) {
+        return $asset->access('view', $this->user);
+      });
+    }
+    // Else load entities from the tempStore state.
+    else {
+      $this->entities = $this->tempStore->get($this->user->id());
+    }
+
     $this->entityType = $this->entityTypeManager->getDefinition('asset');
-    $this->entities = $this->tempStore->get($this->user->id());
     if (empty($this->entityType) || empty($this->entities)) {
       return new RedirectResponse($this->getCancelUrl()
         ->setAbsolute()

modules/core/location/src/Plugin/Field/FieldFormatter/AssetCurrentLocationFormatter.php

@@ -0,0 +1,114 @@
+<?php
+
+namespace Drupal\farm_location\Plugin\Field\FieldFormatter;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceLabelFormatter;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+
+/**
+ * Field formatter for the current location asset field.
+ *
+ * @FieldFormatter(
+ *   id = "asset_current_location",
+ *   label = @Translation("Asset current location"),
+ *   description = @Translation("Display the label of the referenced entities."),
+ *   field_types = {
+ *     "entity_reference"
+ *   }
+ * )
+ */
+class AssetCurrentLocationFormatter extends EntityReferenceLabelFormatter {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function defaultSettings() {
+    return [
+      'render_without_location' => FALSE,
+      'move_asset_button' => FALSE,
+    ] + parent::defaultSettings();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsForm(array $form, FormStateInterface $form_state) {
+    $elements = parent::settingsForm($form, $form_state);
+    $elements['render_without_location'] = [
+      '#title' => $this->t('Render without location'),
+      '#description' => $this->t('Include this field when the asset has no current location.'),
+      '#type' => 'checkbox',
+      '#default_value' => $this->getSetting('render_without_location'),
+    ];
+    $elements['move_asset_button'] = [
+      '#title' => $this->t('Move asset button'),
+      '#description' => $this->t('Include a button to move the asset.'),
+      '#type' => 'checkbox',
+      '#default_value' => $this->getSetting('move_asset_button'),
+    ];
+    return $elements;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsSummary() {
+    $summary = parent::settingsSummary();
+    $summary[] = $this->getSetting('render_without_location') ? $this->t('Render without current location') : $this->t('Do not render without current location');
+    $summary[] = $this->getSetting('move_asset_button') ? $this->t('Include move asset button') : $this->t('No move asset button');
+    return $summary;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function viewElements(FieldItemListInterface $items, $langcode) {
+
+    // Build labels in parent.
+    $elements = parent::viewElements($items, $langcode);
+
+    // Get the asset.
+    $asset = $items->getEntity();
+
+    // If the asset is fixed don't render additional information.
+    if ($asset->get('is_fixed')->value) {
+      return $elements;
+    }
+
+    // If there are no current locations only render if configured to.
+    if (empty($elements) && !$this->getSetting('render_without_location')) {
+      return $elements;
+    }
+
+    // Add N/A if there are no current locations.
+    if (empty($elements)) {
+
+      // Render N/A if configured.
+      $elements[] = ['#markup' => 'N/A'];
+    }
+
+    // Add the move asset button if configured.
+    if ($this->getSetting('move_asset_button')) {
+
+      // Append a "Move asset" link.
+      $options = [
+        'query' => [
+          'asset' => $asset->id(),
+          'destination' => $asset->toUrl()->toString(),
+        ],
+      ];
+      $elements[] = [
+        '#type' => 'link',
+        '#title' => $this->t('Move asset'),
+        '#url' => Url::fromRoute('farm_location.asset_move_action_form', [], $options),
+        '#attributes' => [
+          'class' => ['button', 'button--small'],
+        ],
+      ];
+    }
+    return $elements;
+  }
+
+}