Generate case entity. (Called CaseEntity because "Case" is reserved word)

modules/zencrm_entities/case_entity.page.inc

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+<?php
+
+/**
+ * @file
+ * Contains case_entity.page.inc.
+ *
+ * Page callback for Case entity entities.
+ */
+
+use Drupal\Core\Render\Element;
+
+/**
+ * Prepares variables for Case entity templates.
+ *
+ * Default template: case_entity.html.twig.
+ *
+ * @param array $variables
+ *   An associative array containing:
+ *   - elements: An associative array containing the user information and any
+ *   - attributes: HTML attributes for the containing element.
+ */
+function template_preprocess_case_entity(array &$variables) {
+  // Fetch CaseEntity Entity Object.
+  $case_entity = $variables['elements']['#case_entity'];
+
+  // Helpful $content variable for templates.
+  foreach (Element::children($variables['elements']) as $key) {
+    $variables['content'][$key] = $variables['elements'][$key];
+  }
+}

modules/zencrm_entities/config/schema/case_entity_type.schema.yml

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+zencrm_entities.case_entity_type.*:
+  type: config_entity
+  label: 'Case entity type config'
+  mapping:
+    id:
+      type: string
+      label: 'ID'
+    label:
+      type: label
+      label: 'Label'
+    uuid:
+      type: string

modules/zencrm_entities/src/CaseEntityAccessControlHandler.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Drupal\zencrm_entities;
+
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Access\AccessResult;
+
+/**
+ * Access controller for the Case entity entity.
+ *
+ * @see \Drupal\zencrm_entities\Entity\CaseEntity.
+ */
+class CaseEntityAccessControlHandler extends EntityAccessControlHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+    /** @var \Drupal\zencrm_entities\Entity\CaseEntityInterface $entity */
+    switch ($operation) {
+      case 'view':
+        if (!$entity->isPublished()) {
+          return AccessResult::allowedIfHasPermission($account, 'view unpublished case entity entities');
+        }
+        return AccessResult::allowedIfHasPermission($account, 'view published case entity entities');
+
+      case 'update':
+        return AccessResult::allowedIfHasPermission($account, 'edit case entity entities');
+
+      case 'delete':
+        return AccessResult::allowedIfHasPermission($account, 'delete case entity entities');
+    }
+
+    // Unknown operation, no opinion.
+    return AccessResult::neutral();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkCreateAccess(AccountInterface $account, array $context, $entity_bundle = NULL) {
+    return AccessResult::allowedIfHasPermission($account, 'add case entity entities');
+  }
+
+}

modules/zencrm_entities/src/CaseEntityHtmlRouteProvider.php

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+<?php
+
+namespace Drupal\zencrm_entities;
+
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Entity\Routing\AdminHtmlRouteProvider;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Provides routes for Case entity entities.
+ *
+ * @see \Drupal\Core\Entity\Routing\AdminHtmlRouteProvider
+ * @see \Drupal\Core\Entity\Routing\DefaultHtmlRouteProvider
+ */
+class CaseEntityHtmlRouteProvider extends AdminHtmlRouteProvider {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRoutes(EntityTypeInterface $entity_type) {
+    $collection = parent::getRoutes($entity_type);
+
+    $entity_type_id = $entity_type->id();
+
+    if ($settings_form_route = $this->getSettingsFormRoute($entity_type)) {
+      $collection->add("$entity_type_id.settings", $settings_form_route);
+    }
+
+    return $collection;
+  }
+
+  /**
+   * Gets the settings form route.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type.
+   *
+   * @return \Symfony\Component\Routing\Route|null
+   *   The generated route, if available.
+   */
+  protected function getSettingsFormRoute(EntityTypeInterface $entity_type) {
+    if (!$entity_type->getBundleEntityType()) {
+      $route = new Route("/admin/structure/{$entity_type->id()}/settings");
+      $route
+        ->setDefaults([
+          '_form' => 'Drupal\zencrm_entities\Form\CaseEntitySettingsForm',
+          '_title' => "{$entity_type->getLabel()} settings",
+        ])
+        ->setRequirement('_permission', $entity_type->getAdminPermission())
+        ->setOption('_admin_route', TRUE);
+
+      return $route;
+    }
+  }
+
+}

modules/zencrm_entities/src/CaseEntityListBuilder.php

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+<?php
+
+namespace Drupal\zencrm_entities;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityListBuilder;
+use Drupal\Core\Link;
+
+/**
+ * Defines a class to build a listing of Case entity entities.
+ *
+ * @ingroup zencrm_entities
+ */
+class CaseEntityListBuilder extends EntityListBuilder {
+
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildHeader() {
+    $header['id'] = $this->t('Case entity ID');
+    $header['name'] = $this->t('Name');
+    return $header + parent::buildHeader();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildRow(EntityInterface $entity) {
+    /* @var $entity \Drupal\zencrm_entities\Entity\CaseEntity */
+    $row['id'] = $entity->id();
+    $row['name'] = Link::createFromRoute(
+      $entity->label(),
+      'entity.case_entity.edit_form',
+      ['case_entity' => $entity->id()]
+    );
+    return $row + parent::buildRow($entity);
+  }
+
+}

modules/zencrm_entities/src/CaseEntityTranslationHandler.php

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+<?php
+
+namespace Drupal\zencrm_entities;
+
+use Drupal\content_translation\ContentTranslationHandler;
+
+/**
+ * Defines the translation handler for case_entity.
+ */
+class CaseEntityTranslationHandler extends ContentTranslationHandler {
+
+  // Override here the needed methods from ContentTranslationHandler.
+
+}

modules/zencrm_entities/src/CaseEntityTypeHtmlRouteProvider.php

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+<?php
+
+namespace Drupal\zencrm_entities;
+
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Entity\Routing\AdminHtmlRouteProvider;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Provides routes for Case entity type entities.
+ *
+ * @see Drupal\Core\Entity\Routing\AdminHtmlRouteProvider
+ * @see Drupal\Core\Entity\Routing\DefaultHtmlRouteProvider
+ */
+class CaseEntityTypeHtmlRouteProvider extends AdminHtmlRouteProvider {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRoutes(EntityTypeInterface $entity_type) {
+    $collection = parent::getRoutes($entity_type);
+
+    // Provide your custom entity routes here.
+
+    return $collection;
+  }
+
+}

modules/zencrm_entities/src/CaseEntityTypeListBuilder.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Drupal\zencrm_entities;
+
+use Drupal\Core\Config\Entity\ConfigEntityListBuilder;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Provides a listing of Case entity type entities.
+ */
+class CaseEntityTypeListBuilder extends ConfigEntityListBuilder {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildHeader() {
+    $header['label'] = $this->t('Case entity type');
+    $header['id'] = $this->t('Machine name');
+    return $header + parent::buildHeader();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildRow(EntityInterface $entity) {
+    $row['label'] = $entity->label();
+    $row['id'] = $entity->id();
+    // You probably want a few more properties here...
+    return $row + parent::buildRow($entity);
+  }
+
+}

modules/zencrm_entities/src/Entity/CaseEntity.php

@@ -0,0 +1,224 @@
+<?php
+
+namespace Drupal\zencrm_entities\Entity;
+
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Field\BaseFieldDefinition;
+use Drupal\Core\Entity\ContentEntityBase;
+use Drupal\Core\Entity\EntityChangedTrait;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\user\UserInterface;
+
+/**
+ * Defines the Case entity entity.
+ *
+ * @ingroup zencrm_entities
+ *
+ * @ContentEntityType(
+ *   id = "case_entity",
+ *   label = @Translation("Case entity"),
+ *   bundle_label = @Translation("Case entity type"),
+ *   handlers = {
+ *     "view_builder" = "Drupal\Core\Entity\EntityViewBuilder",
+ *     "list_builder" = "Drupal\zencrm_entities\CaseEntityListBuilder",
+ *     "views_data" = "Drupal\zencrm_entities\Entity\CaseEntityViewsData",
+ *     "translation" = "Drupal\zencrm_entities\CaseEntityTranslationHandler",
+ *
+ *     "form" = {
+ *       "default" = "Drupal\zencrm_entities\Form\CaseEntityForm",
+ *       "add" = "Drupal\zencrm_entities\Form\CaseEntityForm",
+ *       "edit" = "Drupal\zencrm_entities\Form\CaseEntityForm",
+ *       "delete" = "Drupal\zencrm_entities\Form\CaseEntityDeleteForm",
+ *     },
+ *     "access" = "Drupal\zencrm_entities\CaseEntityAccessControlHandler",
+ *     "route_provider" = {
+ *       "html" = "Drupal\zencrm_entities\CaseEntityHtmlRouteProvider",
+ *     },
+ *   },
+ *   base_table = "case_entity",
+ *   data_table = "case_entity_field_data",
+ *   translatable = TRUE,
+ *   admin_permission = "administer case entity entities",
+ *   entity_keys = {
+ *     "id" = "id",
+ *     "bundle" = "type",
+ *     "label" = "name",
+ *     "uuid" = "uuid",
+ *     "uid" = "user_id",
+ *     "langcode" = "langcode",
+ *     "status" = "status",
+ *   },
+ *   links = {
+ *     "canonical" = "/admin/structure/case_entity/{case_entity}",
+ *     "add-page" = "/admin/structure/case_entity/add",
+ *     "add-form" = "/admin/structure/case_entity/add/{case_entity_type}",
+ *     "edit-form" = "/admin/structure/case_entity/{case_entity}/edit",
+ *     "delete-form" = "/admin/structure/case_entity/{case_entity}/delete",
+ *     "collection" = "/admin/structure/case_entity",
+ *   },
+ *   bundle_entity_type = "case_entity_type",
+ *   field_ui_base_route = "entity.case_entity_type.edit_form"
+ * )
+ */
+class CaseEntity extends ContentEntityBase implements CaseEntityInterface {
+
+  use EntityChangedTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function preCreate(EntityStorageInterface $storage_controller, array &$values) {
+    parent::preCreate($storage_controller, $values);
+    $values += [
+      'user_id' => \Drupal::currentUser()->id(),
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getName() {
+    return $this->get('name')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setName($name) {
+    $this->set('name', $name);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCreatedTime() {
+    return $this->get('created')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setCreatedTime($timestamp) {
+    $this->set('created', $timestamp);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getOwner() {
+    return $this->get('user_id')->entity;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getOwnerId() {
+    return $this->get('user_id')->target_id;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setOwnerId($uid) {
+    $this->set('user_id', $uid);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setOwner(UserInterface $account) {
+    $this->set('user_id', $account->id());
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isPublished() {
+    return (bool) $this->getEntityKey('status');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setPublished($published) {
+    $this->set('status', $published ? TRUE : FALSE);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
+    $fields = parent::baseFieldDefinitions($entity_type);
+
+    $fields['user_id'] = BaseFieldDefinition::create('entity_reference')
+      ->setLabel(t('Authored by'))
+      ->setDescription(t('The user ID of author of the Case entity entity.'))
+      ->setRevisionable(TRUE)
+      ->setSetting('target_type', 'user')
+      ->setSetting('handler', 'default')
+      ->setTranslatable(TRUE)
+      ->setDisplayOptions('view', [
+        'label' => 'hidden',
+        'type' => 'author',
+        'weight' => 0,
+      ])
+      ->setDisplayOptions('form', [
+        'type' => 'entity_reference_autocomplete',
+        'weight' => 5,
+        'settings' => [
+          'match_operator' => 'CONTAINS',
+          'size' => '60',
+          'autocomplete_type' => 'tags',
+          'placeholder' => '',
+        ],
+      ])
+      ->setDisplayConfigurable('form', TRUE)
+      ->setDisplayConfigurable('view', TRUE);
+
+    $fields['name'] = BaseFieldDefinition::create('string')
+      ->setLabel(t('Name'))
+      ->setDescription(t('The name of the Case entity entity.'))
+      ->setSettings([
+        'max_length' => 50,
+        'text_processing' => 0,
+      ])
+      ->setDefaultValue('')
+      ->setDisplayOptions('view', [
+        'label' => 'above',
+        'type' => 'string',
+        'weight' => -4,
+      ])
+      ->setDisplayOptions('form', [
+        'type' => 'string_textfield',
+        'weight' => -4,
+      ])
+      ->setDisplayConfigurable('form', TRUE)
+      ->setDisplayConfigurable('view', TRUE)
+      ->setRequired(TRUE);
+
+    $fields['status'] = BaseFieldDefinition::create('boolean')
+      ->setLabel(t('Publishing status'))
+      ->setDescription(t('A boolean indicating whether the Case entity is published.'))
+      ->setDefaultValue(TRUE)
+      ->setDisplayOptions('form', [
+        'type' => 'boolean_checkbox',
+        'weight' => -3,
+      ]);
+
+    $fields['created'] = BaseFieldDefinition::create('created')
+      ->setLabel(t('Created'))
+      ->setDescription(t('The time that the entity was created.'));
+
+    $fields['changed'] = BaseFieldDefinition::create('changed')
+      ->setLabel(t('Changed'))
+      ->setDescription(t('The time that the entity was last edited.'));
+
+    return $fields;
+  }
+
+}

modules/zencrm_entities/src/Entity/CaseEntityInterface.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace Drupal\zencrm_entities\Entity;
+
+use Drupal\Core\Entity\ContentEntityInterface;
+use Drupal\Core\Entity\EntityChangedInterface;
+use Drupal\user\EntityOwnerInterface;
+
+/**
+ * Provides an interface for defining Case entity entities.
+ *
+ * @ingroup zencrm_entities
+ */
+interface CaseEntityInterface extends ContentEntityInterface, EntityChangedInterface, EntityOwnerInterface {
+
+  // Add get/set methods for your configuration properties here.
+
+  /**
+   * Gets the Case entity name.
+   *
+   * @return string
+   *   Name of the Case entity.
+   */
+  public function getName();
+
+  /**
+   * Sets the Case entity name.
+   *
+   * @param string $name
+   *   The Case entity name.
+   *
+   * @return \Drupal\zencrm_entities\Entity\CaseEntityInterface
+   *   The called Case entity entity.
+   */
+  public function setName($name);
+
+  /**
+   * Gets the Case entity creation timestamp.
+   *
+   * @return int
+   *   Creation timestamp of the Case entity.
+   */
+  public function getCreatedTime();
+
+  /**
+   * Sets the Case entity creation timestamp.
+   *
+   * @param int $timestamp
+   *   The Case entity creation timestamp.
+   *
+   * @return \Drupal\zencrm_entities\Entity\CaseEntityInterface
+   *   The called Case entity entity.
+   */
+  public function setCreatedTime($timestamp);
+
+  /**
+   * Returns the Case entity published status indicator.
+   *
+   * Unpublished Case entity are only visible to restricted users.
+   *
+   * @return bool
+   *   TRUE if the Case entity is published.
+   */
+  public function isPublished();
+
+  /**
+   * Sets the published status of a Case entity.
+   *
+   * @param bool $published
+   *   TRUE to set this Case entity to published, FALSE to set it to unpublished.
+   *
+   * @return \Drupal\zencrm_entities\Entity\CaseEntityInterface
+   *   The called Case entity entity.
+   */
+  public function setPublished($published);
+
+}

modules/zencrm_entities/src/Entity/CaseEntityType.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Drupal\zencrm_entities\Entity;
+
+use Drupal\Core\Config\Entity\ConfigEntityBundleBase;
+
+/**
+ * Defines the Case entity type entity.
+ *
+ * @ConfigEntityType(
+ *   id = "case_entity_type",
+ *   label = @Translation("Case entity type"),
+ *   handlers = {
+ *     "view_builder" = "Drupal\Core\Entity\EntityViewBuilder",
+ *     "list_builder" = "Drupal\zencrm_entities\CaseEntityTypeListBuilder",
+ *     "form" = {
+ *       "add" = "Drupal\zencrm_entities\Form\CaseEntityTypeForm",
+ *       "edit" = "Drupal\zencrm_entities\Form\CaseEntityTypeForm",
+ *       "delete" = "Drupal\zencrm_entities\Form\CaseEntityTypeDeleteForm"
+ *     },
+ *     "route_provider" = {
+ *       "html" = "Drupal\zencrm_entities\CaseEntityTypeHtmlRouteProvider",
+ *     },
+ *   },
+ *   config_prefix = "case_entity_type",
+ *   admin_permission = "administer site configuration",
+ *   bundle_of = "case_entity",
+ *   entity_keys = {
+ *     "id" = "id",
+ *     "label" = "label",
+ *     "uuid" = "uuid"
+ *   },
+ *   links = {
+ *     "canonical" = "/admin/structure/case_entity_type/{case_entity_type}",
+ *     "add-form" = "/admin/structure/case_entity_type/add",
+ *     "edit-form" = "/admin/structure/case_entity_type/{case_entity_type}/edit",
+ *     "delete-form" = "/admin/structure/case_entity_type/{case_entity_type}/delete",
+ *     "collection" = "/admin/structure/case_entity_type"
+ *   }
+ * )
+ */
+class CaseEntityType extends ConfigEntityBundleBase implements CaseEntityTypeInterface {
+
+  /**
+   * The Case entity type ID.
+   *
+   * @var string
+   */
+  protected $id;
+
+  /**
+   * The Case entity type label.
+   *
+   * @var string
+   */
+  protected $label;
+
+}

modules/zencrm_entities/src/Entity/CaseEntityTypeInterface.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Drupal\zencrm_entities\Entity;
+
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
+
+/**
+ * Provides an interface for defining Case entity type entities.
+ */
+interface CaseEntityTypeInterface extends ConfigEntityInterface {
+
+  // Add get/set methods for your configuration properties here.
+}

modules/zencrm_entities/src/Entity/CaseEntityViewsData.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Drupal\zencrm_entities\Entity;
+
+use Drupal\views\EntityViewsData;
+
+/**
+ * Provides Views data for Case entity entities.
+ */
+class CaseEntityViewsData extends EntityViewsData {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getViewsData() {
+    $data = parent::getViewsData();
+
+    // Additional information for Views integration, such as table joins, can be
+    // put here.
+
+    return $data;
+  }
+
+}

modules/zencrm_entities/src/Form/CaseEntityDeleteForm.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Drupal\zencrm_entities\Form;
+
+use Drupal\Core\Entity\ContentEntityDeleteForm;
+
+/**
+ * Provides a form for deleting Case entity entities.
+ *
+ * @ingroup zencrm_entities
+ */
+class CaseEntityDeleteForm extends ContentEntityDeleteForm {
+
+
+}

modules/zencrm_entities/src/Form/CaseEntityForm.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Drupal\zencrm_entities\Form;
+
+use Drupal\Core\Entity\ContentEntityForm;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Form controller for Case entity edit forms.
+ *
+ * @ingroup zencrm_entities
+ */
+class CaseEntityForm extends ContentEntityForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    /* @var $entity \Drupal\zencrm_entities\Entity\CaseEntity */
+    $form = parent::buildForm($form, $form_state);
+
+    $entity = $this->entity;
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    $entity = $this->entity;
+
+    $status = parent::save($form, $form_state);
+
+    switch ($status) {
+      case SAVED_NEW:
+        drupal_set_message($this->t('Created the %label Case entity.', [
+          '%label' => $entity->label(),
+        ]));
+        break;
+
+      default:
+        drupal_set_message($this->t('Saved the %label Case entity.', [
+          '%label' => $entity->label(),
+        ]));
+    }
+    $form_state->setRedirect('entity.case_entity.canonical', ['case_entity' => $entity->id()]);
+  }
+
+}

modules/zencrm_entities/src/Form/CaseEntitySettingsForm.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Drupal\zencrm_entities\Form;
+
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Class CaseEntitySettingsForm.
+ *
+ * @ingroup zencrm_entities
+ */
+class CaseEntitySettingsForm extends FormBase {
+
+  /**
+   * Returns a unique string identifying the form.
+   *
+   * @return string
+   *   The unique string identifying the form.
+   */
+  public function getFormId() {
+    return 'caseentity_settings';
+  }
+
+  /**
+   * Form submission handler.
+   *
+   * @param array $form
+   *   An associative array containing the structure of the form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // Empty implementation of the abstract submit class.
+  }
+
+  /**
+   * Defines the settings form for Case entity entities.
+   *
+   * @param array $form
+   *   An associative array containing the structure of the form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   *
+   * @return array
+   *   Form definition array.
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $form['caseentity_settings']['#markup'] = 'Settings form for Case entity entities. Manage field settings here.';
+    return $form;
+  }
+
+}

modules/zencrm_entities/src/Form/CaseEntityTypeDeleteForm.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Drupal\zencrm_entities\Form;
+
+use Drupal\Core\Entity\EntityConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+
+/**
+ * Builds the form to delete Case entity type entities.
+ */
+class CaseEntityTypeDeleteForm extends EntityConfirmFormBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return $this->t('Are you sure you want to delete %name?', ['%name' => $this->entity->label()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('entity.case_entity_type.collection');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return $this->t('Delete');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $this->entity->delete();
+
+    drupal_set_message(
+      $this->t('content @type: deleted @label.',
+        [
+          '@type' => $this->entity->bundle(),
+          '@label' => $this->entity->label(),
+        ]
+        )
+    );
+
+    $form_state->setRedirectUrl($this->getCancelUrl());
+  }
+
+}

modules/zencrm_entities/src/Form/CaseEntityTypeForm.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace Drupal\zencrm_entities\Form;
+
+use Drupal\Core\Entity\EntityForm;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Class CaseEntityTypeForm.
+ */
+class CaseEntityTypeForm extends EntityForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function form(array $form, FormStateInterface $form_state) {
+    $form = parent::form($form, $form_state);
+
+    $case_entity_type = $this->entity;
+    $form['label'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Label'),
+      '#maxlength' => 255,
+      '#default_value' => $case_entity_type->label(),
+      '#description' => $this->t("Label for the Case entity type."),
+      '#required' => TRUE,
+    ];
+
+    $form['id'] = [
+      '#type' => 'machine_name',
+      '#default_value' => $case_entity_type->id(),
+      '#machine_name' => [
+        'exists' => '\Drupal\zencrm_entities\Entity\CaseEntityType::load',
+      ],
+      '#disabled' => !$case_entity_type->isNew(),
+    ];
+
+    /* You will need additional form elements for your custom properties. */
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    $case_entity_type = $this->entity;
+    $status = $case_entity_type->save();
+
+    switch ($status) {
+      case SAVED_NEW:
+        drupal_set_message($this->t('Created the %label Case entity type.', [
+          '%label' => $case_entity_type->label(),
+        ]));
+        break;
+
+      default:
+        drupal_set_message($this->t('Saved the %label Case entity type.', [
+          '%label' => $case_entity_type->label(),
+        ]));
+    }
+    $form_state->setRedirectUrl($case_entity_type->toUrl('collection'));
+  }
+
+}

modules/zencrm_entities/templates/case-entity-content-add-list.html.twig

@@ -0,0 +1,23 @@
+{#
+/**
+ * @file
+ * Default theme implementation to present a list of custom content entity types/bundles.
+ *
+ * Available variables:
+ * - types: A collection of all the available custom entity types/bundles.
+ *   Each type/bundle contains the following:
+ *   - link: A link to add a content entity of this type.
+ *   - description: A description of this content entity types/bundle.
+ *
+ * @see template_preprocess_case_entity_content_add_list()
+ *
+ * @ingroup themeable
+ */
+#}
+{% spaceless %}
+  <dl>
+    {% for type in types %}
+      <dt>{{ type.link }}</dt>
+    {% endfor %}
+  </dl>
+{% endspaceless %}

modules/zencrm_entities/templates/case_entity.html.twig

@@ -0,0 +1,22 @@
+{#
+/**
+ * @file case_entity.html.twig
+ * Default theme implementation to present Case entity data.
+ *
+ * This template is used when viewing Case entity pages.
+ *
+ *
+ * Available variables:
+ * - content: A list of content items. Use 'content' to print all content, or
+ * - attributes: HTML attributes for the container element.
+ *
+ * @see template_preprocess_case_entity()
+ *
+ * @ingroup themeable
+ */
+#}
+<div{{ attributes.addClass('case_entity') }}>
+  {% if content %}
+    {{- content -}}
+  {% endif %}
+</div>

modules/zencrm_entities/zencrm_entities.links.action.yml

@@ -30,3 +30,14 @@ entity.hat_type.add_form:
   appears_on:
     - entity.hat_type.collection
 
+entity.case_entity.add_form:
+  route_name: entity.case_entity.add_page
+  title: 'Add Case entity'
+  appears_on:
+    - entity.case_entity.collection
+entity.case_entity_type.add_form:
+  route_name: entity.case_entity_type.add_form
+  title: 'Add Case entity type'
+  appears_on:
+    - entity.case_entity_type.collection
+

modules/zencrm_entities/zencrm_entities.links.menu.yml

@@ -72,3 +72,21 @@ entity.hat_type.collection:
   parent: system.admin_structure
   weight: 99
 
+
+# Case entity menu items definition
+entity.case_entity.collection:
+  title: 'Case entity list'
+  route_name: entity.case_entity.collection
+  description: 'List Case entity entities'
+  parent: system.admin_structure
+  weight: 100
+
+
+# Case entity type menu items definition
+entity.case_entity_type.collection:
+  title: 'Case entity type'
+  route_name: entity.case_entity_type.collection
+  description: 'List Case entity type (bundles)'
+  parent: system.admin_structure
+  weight: 99
+

modules/zencrm_entities/zencrm_entities.links.task.yml

@@ -104,3 +104,21 @@ entity.hat.delete_form:
   title: Delete
   weight: 10
 
+# Case entity routing definition
+
+entity.case_entity.canonical:
+  route_name: entity.case_entity.canonical
+  base_route: entity.case_entity.canonical
+  title: 'View'
+
+entity.case_entity.edit_form:
+  route_name: entity.case_entity.edit_form
+  base_route: entity.case_entity.canonical
+  title: 'Edit'
+
+entity.case_entity.delete_form:
+  route_name:  entity.case_entity.delete_form
+  base_route:  entity.case_entity.canonical
+  title: Delete
+  weight: 10
+

modules/zencrm_entities/zencrm_entities.module

@@ -71,6 +71,16 @@ function zencrm_entities_theme() {
     'variables' => ['content' => NULL],
     'file' => 'hat.page.inc',
   ];
+  $theme['case_entity'] = [
+    'render element' => 'elements',
+    'file' => 'case_entity.page.inc',
+    'template' => 'case_entity',
+  ];
+  $theme['case_entity_content_add_list'] = [
+    'render element' => 'content',
+    'variables' => ['content' => NULL],
+    'file' => 'case_entity.page.inc',
+  ];
   return $theme;
 }
 
@@ -89,3 +99,19 @@ function zencrm_entities_theme_suggestions_hat(array $variables) {
   $suggestions[] = 'hat__' . $entity->id() . '__' . $sanitized_view_mode;
   return $suggestions;
 }
+
+/**
+* Implements hook_theme_suggestions_HOOK().
+*/
+function zencrm_entities_theme_suggestions_case_entity(array $variables) {
+  $suggestions = [];
+  $entity = $variables['elements']['#case_entity'];
+  $sanitized_view_mode = strtr($variables['elements']['#view_mode'], '.', '_');
+
+  $suggestions[] = 'case_entity__' . $sanitized_view_mode;
+  $suggestions[] = 'case_entity__' . $entity->bundle();
+  $suggestions[] = 'case_entity__' . $entity->bundle() . '__' . $sanitized_view_mode;
+  $suggestions[] = 'case_entity__' . $entity->id();
+  $suggestions[] = 'case_entity__' . $entity->id() . '__' . $sanitized_view_mode;
+  return $suggestions;
+}

modules/zencrm_entities/zencrm_entities.permissions.yml

@@ -116,3 +116,22 @@ view published hat entities:
 
 view unpublished hat entities:
   title: 'View unpublished Hat entities'
+add case entity entities:
+  title: 'Create new Case entity entities'
+
+administer case entity entities:
+  title: 'Administer Case entity entities'
+  description: 'Allow to access the administration form to configure Case entity entities.'
+  restrict access: true
+
+delete case entity entities:
+  title: 'Delete Case entity entities'
+
+edit case entity entities:
+  title: 'Edit Case entity entities'
+
+view published case entity entities:
+  title: 'View published Case entity entities'
+
+view unpublished case entity entities:
+  title: 'View unpublished Case entity entities'