如何为Drupal 7自定义Housing Schemes服务添加CRUD功能？

Got it, let's expand your existing Housing Schemes REST API to include full CRUD functionality. Here's a step-by-step implementation that fits seamlessly with your current setup:

First, we need to register the Create, Update, and Delete operations alongside your existing Retrieve endpoint. Replace your current housing_schemes_services_resource() function with this:

function housing_schemes_services_resource() {
  $api = array(
    'housing_schemes' => array(
      'operations' => array(
        // Existing Retrieve operation
        'retrieve' => array(
          'help' => 'Retrieves housing schemes info.',
          'file' => array(
            'type' => 'inc',
            'module' => 'housing_schemes_services',
            'name' => 'housing_schemes.services',
          ),
          'callback' => 'housing_schemes_services_resource_retrieve',
          'access callback' => 'user_access',
          'access arguments' => array('access content'),
          'access arguments append' => FALSE,
          'args' => array(
            array(
              'name' => 'nid',
              'type' => 'int',
              'description' => 'Node ID of the housing scheme',
              'source' => array('path' => '0'),
              'optional' => FALSE,
            ),
          ),
        ),
        // New Create operation
        'create' => array(
          'help' => 'Creates a new housing scheme.',
          'file' => array(
            'type' => 'inc',
            'module' => 'housing_schemes_services',
            'name' => 'housing_schemes.services',
          ),
          'callback' => 'housing_schemes_services_resource_create',
          'access callback' => 'user_access',
          'access arguments' => array('create housing_scheme content'),
          'access arguments append' => FALSE,
          'args' => array(
            array(
              'name' => 'node_data',
              'type' => 'struct',
              'description' => 'Housing scheme data to create',
              'source' => 'data',
              'optional' => FALSE,
            ),
          ),
        ),
        // New Update operation
        'update' => array(
          'help' => 'Updates an existing housing scheme.',
          'file' => array(
            'type' => 'inc',
            'module' => 'housing_schemes_services',
            'name' => 'housing_schemes.services',
          ),
          'callback' => 'housing_schemes_services_resource_update',
          'access callback' => 'housing_schemes_services_access_update',
          'access arguments' => array(1), // Passes the node object to access callback
          'access arguments append' => TRUE,
          'args' => array(
            array(
              'name' => 'nid',
              'type' => 'int',
              'description' => 'Node ID of the housing scheme to update',
              'source' => array('path' => '0'),
              'optional' => FALSE,
            ),
            array(
              'name' => 'node_data',
              'type' => 'struct',
              'description' => 'Updated housing scheme data',
              'source' => 'data',
              'optional' => FALSE,
            ),
          ),
        ),
        // New Delete operation
        'delete' => array(
          'help' => 'Deletes an existing housing scheme.',
          'file' => array(
            'type' => 'inc',
            'module' => 'housing_schemes_services',
            'name' => 'housing_schemes.services',
          ),
          'callback' => 'housing_schemes_services_resource_delete',
          'access callback' => 'housing_schemes_services_access_delete',
          'access arguments' => array(1), // Passes the node object to access callback
          'access arguments append' => TRUE,
          'args' => array(
            array(
              'name' => 'nid',
              'type' => 'int',
              'description' => 'Node ID of the housing scheme to delete',
              'source' => array('path' => '0'),
              'optional' => FALSE,
            ),
          ),
        ),
      ),
    ),
  );
  return $api;
}

Add these new functions to your module file to handle the actual Create, Update, and Delete logic:

Create Callback #

function housing_schemes_services_resource_create($node_data) {
  // Validate we're only creating housing_scheme nodes
  if ($node_data['type'] !== 'housing_scheme') {
    return services_error('Invalid node type. Only "housing_scheme" is allowed.', 400);
  }

  // Initialize new node object
  $node = new stdClass();
  $node->type = 'housing_scheme';
  node_object_prepare($node);

  // Map incoming data to node fields
  $node->title = $node_data['scheme_name'];
  $node->body[LANGUAGE_NONE][0]['value'] = $node_data['about_scheme'];
  $node->field_distance_from_the_city[LANGUAGE_NONE][0]['value'] = $node_data['distance_from_the_city'];
  $node->field_nearest_major_city[LANGUAGE_NONE][0]['value'] = $node_data['nearest_major_city'];
  $node->field_locality_review[LANGUAGE_NONE][0]['value'] = $node_data['locality_review'];

  // Set default values (adjust based on your needs)
  $node->uid = isset($node_data['uid']) ? $node_data['uid'] : 1; // Admin as default author
  $node->status = isset($node_data['status']) ? $node_data['status'] : 1; // Published by default
  $node->created = REQUEST_TIME;

  // Save the node
  node_save($node);

  // Return the created node using your existing retrieve logic
  return housing_schemes_services_resource_retrieve($node->nid);
}

Update Callback #

function housing_schemes_services_resource_update($nid, $node_data) {
  // Load the existing node
  $node = node_load($nid);
  if (!$node || $node->type !== 'housing_scheme') {
    return services_error('Housing scheme not found.', 404);
  }

  // Update fields with incoming data (only update provided fields)
  if (isset($node_data['scheme_name'])) {
    $node->title = $node_data['scheme_name'];
  }
  if (isset($node_data['about_scheme'])) {
    $node->body[LANGUAGE_NONE][0]['value'] = $node_data['about_scheme'];
  }
  if (isset($node_data['distance_from_the_city'])) {
    $node->field_distance_from_the_city[LANGUAGE_NONE][0]['value'] = $node_data['distance_from_the_city'];
  }
  if (isset($node_data['nearest_major_city'])) {
    $node->field_nearest_major_city[LANGUAGE_NONE][0]['value'] = $node_data['nearest_major_city'];
  }
  if (isset($node_data['locality_review'])) {
    $node->field_locality_review[LANGUAGE_NONE][0]['value'] = $node_data['locality_review'];
  }
  if (isset($node_data['status'])) {
    $node->status = $node_data['status'];
  }

  // Save the updated node
  node_save($node);

  // Return the updated node
  return housing_schemes_services_resource_retrieve($node->nid);
}

Delete Callback #

function housing_schemes_services_resource_delete($nid) {
  // Load the node
  $node = node_load($nid);
  if (!$node || $node->type !== 'housing_scheme') {
    return services_error('Housing scheme not found.', 404);
  }

  // Delete the node
  node_delete($nid);

  // Return success response
  return array(
    'success' => TRUE,
    'message' => "Housing scheme with NID $nid has been deleted."
  );
}

Access Control Helpers #

Add these to handle proper permission checks for Update/Delete:

function housing_schemes_services_access_update($node) {
  // Check if user can edit this specific housing scheme node
  return node_access('update', $node);
}

function housing_schemes_services_access_delete($node) {
  // Check if user can delete this specific housing scheme node
  return node_access('delete', $node);
}

After clearing Drupal's cache, you can test each operation with tools like Postman or curl:

• Create: POST to http://localhost/drurest/cf_api/housing_schemes.json with a JSON body like:

  {
    "type": "housing_scheme",
    "scheme_name": "New Downtown Scheme",
    "about_scheme": "Modern apartments in the city center",
    "distance_from_the_city": "2 km",
    "nearest_major_city": "Austin",
    "locality_review": "Excellent"
  }
  

• Update: PUT to http://localhost/drurest/cf_api/housing_schemes/{nid}.json with partial or full node data
• Delete: DELETE to http://localhost/drurest/cf_api/housing_schemes/{nid}.json

内容的提问来源于stack exchange，提问作者Niladri Banerjee - Uttarpara