Added drupal_entity_form() Twig function.

src/TwigExtension.php

@@ -37,6 +37,7 @@ class TwigExtension extends \Twig_Extension {
       new \Twig_SimpleFunction('drupal_block', [$this, 'drupalBlock']),
       new \Twig_SimpleFunction('drupal_region', [$this, 'drupalRegion']),
       new \Twig_SimpleFunction('drupal_entity', [$this, 'drupalEntity']),
+      new \Twig_SimpleFunction('drupal_entity_form', [$this, 'drupalEntityForm']),
       new \Twig_SimpleFunction('drupal_field', [$this, 'drupalField']),
       new \Twig_SimpleFunction('drupal_menu', [$this, 'drupalMenu']),
       new \Twig_SimpleFunction('drupal_form', [$this, 'drupalForm']),
@@ -223,6 +224,30 @@ class TwigExtension extends \Twig_Extension {
     }
   }
 
+  /**
+   * Gets the built and processed entity form for the given entity.
+   *
+   * @param string $entity_type
+   *   The entity type.
+   * @param mixed $id
+   *   The ID of the entity to build.
+   * @param string $operation
+   *   (optional) The operation identifying the form variation to be returned.
+   * @param bool $check_access
+   *   (Optional) Indicates that access check is required.
+   *
+   * @return array
+   *   The processed form for the given entity and operation.
+   */
+  public function drupalEntityForm($entity_type, $id = NULL, $operation = 'default', $check_access = TRUE) {
+    $entity = $id
+      ? \Drupal::entityTypeManager()->getStorage($entity_type)->load($id)
+      : \Drupal::routeMatch()->getParameter($entity_type);
+    if ($entity && (!$check_access || $entity->access('update'))) {
+      return \Drupal::service('entity.form_builder')->getForm($entity, $operation);
+    }
+  }
+
   /**
    * Returns the render array for a single entity field.
    *

tests/src/Functional/TwigTweakTest.php

@@ -7,6 +7,7 @@ use Drupal\Core\Url;
 use Drupal\file\Entity\File;
 use Drupal\responsive_image\Entity\ResponsiveImageStyle;
 use Drupal\Tests\BrowserTestBase;
+use Drupal\user\Entity\Role;
 
 /**
  * A test for Twig extension.
@@ -52,6 +53,9 @@ class TwigTweakTest extends BrowserTestBase {
       'label' => 'Example',
       'breakpoint_group' => 'responsive_image',
     ])->save();
+
+    // This is required for testing entity form.
+    $this->grantPermissions(Role::load(Role::ANONYMOUS_ID), ['edit any page content']);
   }
 
   /**
@@ -128,6 +132,12 @@ class TwigTweakTest extends BrowserTestBase {
     $xpath .= '/h2/a/span[text() = "Beta"]';
     $this->assertByXpath($xpath);
 
+    // Test entity form.
+    $xpath = '//div[@class = "tt-entity-form"]/form';
+    $xpath .= '//input[@name = "title[0][value]" and @value = "Alpha"]';
+    $xpath .= '/../../../div/input[@type = "submit" and @value = "Save"]';
+    $this->assertByXpath($xpath);
+
     // Test field.
     $xpath = '//div[@class = "tt-field"]/div[contains(@class, "field--name-body")]/p[text() != ""]';
     $this->assertByXpath($xpath);

tests/twig_tweak_test/templates/twig-tweak-test.html.twig

@@ -27,6 +27,7 @@
   <div class="tt-entity-default">{{ drupal_entity('node', 1) }}</div>
   <div class="tt-entity-teaser">{{ drupal_entity('node', 1, 'teaser') }}</div>
   <div class="tt-entity-from-url">{{ drupal_entity('node') }}</div>
+  <div class="tt-entity-form">{{ drupal_entity_form('node', 1) }}</div>
   <div class="tt-field">{{ drupal_field('body', 'node', 1) }}</div>
   <div class="tt-menu-default">{{ drupal_menu('twig-tweak-test') }}</div>
   <div class="tt-menu-level">{{ drupal_menu('twig-tweak-test', 2) }}</div>
@@ -45,7 +46,7 @@
   <div class="tt-link">{{ drupal_link('Edit', 'node/1/edit', {absolute: true}) }}</div>
   <div class="tt-messages">{{ drupal_messages() }}</div>
   <div class="tt-breadcrumb">{{ drupal_breadcrumb() }}</div>
-  <div class="tt-link-access">{{ drupal_link('Edit', 'node/1/edit', {absolute: true}, true) }}</div>
+  <div class="tt-link-access">{{ drupal_link('Administration', 'admin', {absolute: true}, true) }}</div>
   <div class="tt-token-replace">{{ 'Site name: [site:name]' | token_replace }}</div>
   <div class="tt-preg-replace">{{ 'FOO' | preg_replace('/(foo)/i', '$1-bar') }}</div>
   <div class="tt-image-style">{{ 'public://images/ocean.jpg' | image_style('thumbnail') }}</div>