Add allow_wildcard configuration

CHANGELOG.md

@@ -6,6 +6,7 @@ Breaking changes:
 
 Features:
 
+- [#2362](https://github.com/rails-api/active_model_serializers/pull/2362) Add `allow_wildcard` configuration option (@Borzik)
 - [#2361](https://github.com/rails-api/active_model_serializers/pull/2361) Add `ActiveModelSerializers.config.use_sha1_digests` to allow customization of the hashing algorithm used for serializer caching (@alexzherdev)
 
 Fixes:

docs/general/configuration_options.md

@@ -62,6 +62,18 @@ What relationships to serialize by default.  Default: `'*'`, which includes one
 objects. See [includes](adapters.md#included) for more info.
 
 
+##### allow_wildcard
+
+Enable wildcard `include` directives (`*`, `**`).
+
+Possible values:
+
+- `true` (default)
+- `false`
+
+When `false`, nested associations to be included must be explicitly specified. Note: this will override default_includes configuration as `*` include will no longer be accepted.
+
+
 ##### serializer_lookup_chain
 
 Configures how serializers are searched for. By default, the lookup chain is

lib/active_model/serializer.rb

@@ -106,7 +106,7 @@ def self.include_directive_from_options(options)
       if options[:include_directive]
         options[:include_directive]
       elsif options[:include]
-        JSONAPI::IncludeDirective.new(options[:include], allow_wildcard: true)
+        JSONAPI::IncludeDirective.new(options[:include], allow_wildcard: config.allow_wildcard)
       else
         ActiveModelSerializers.default_include_directive
       end
@@ -135,6 +135,7 @@ def config.array_serializer
     end
 
     config.default_includes = '*'
+    config.allow_wildcard = true
     config.adapter = :attributes
     config.key_transform = nil
     config.jsonapi_pagination_links_enabled = true

lib/active_model_serializers.rb

@@ -40,7 +40,7 @@ def self.location_of_caller
   # Memoized default include directive
   # @return [JSONAPI::IncludeDirective]
   def self.default_include_directive
-    @default_include_directive ||= JSONAPI::IncludeDirective.new(config.default_includes, allow_wildcard: true)
+    @default_include_directive ||= JSONAPI::IncludeDirective.new(config.default_includes, allow_wildcard: config.allow_wildcard)
   end
 
   def self.silence_warnings

lib/active_model_serializers/adapter/json_api.rb

@@ -52,7 +52,7 @@ def self.fragment_cache(cached_hash, non_cached_hash, root = true)
 
       def initialize(serializer, options = {})
         super
-        @include_directive = JSONAPI::IncludeDirective.new(options[:include], allow_wildcard: true)
+        @include_directive = JSONAPI::IncludeDirective.new(options[:include], allow_wildcard: ActiveModelSerializers.config.allow_wildcard)
         @fieldset = options[:fieldset] || ActiveModel::Serializer::Fieldset.new(options.delete(:fields))
       end
 
@@ -452,7 +452,7 @@ def data_for(serializer, include_slice)
       def relationships_for(serializer, requested_associations, include_slice)
         include_directive = JSONAPI::IncludeDirective.new(
           requested_associations,
-          allow_wildcard: true
+          allow_wildcard: ActiveModelSerializers.config.allow_wildcard
         )
         serializer.associations(include_directive, include_slice).each_with_object({}) do |association, hash|
           hash[association.key] = Relationship.new(serializer, instance_options, association).as_json

test/action_controller/json/include_test.rb

@@ -9,6 +9,8 @@ class IncludeTest < ActionController::TestCase
         INCLUDE_STRING = 'posts.comments'.freeze
         INCLUDE_HASH = { posts: :comments }.freeze
         DEEP_INCLUDE = 'posts.comments.author'.freeze
+        WILDCARD_INCLUDE = '*'.freeze
+        DEEP_WILDCARD_INCLUDE = '**'.freeze
 
         class IncludeTestController < ActionController::Base
           def setup_data
@@ -57,6 +59,16 @@ def render_resource_with_deep_include
             render json: @author, include: DEEP_INCLUDE, adapter: :json
           end
 
+          def render_resource_with_wildcard_include
+            setup_data
+            render json: @author, include: WILDCARD_INCLUDE, adapter: :json
+          end
+
+          def render_resource_with_deep_wildcard_include
+            setup_data
+            render json: @author, include: DEEP_WILDCARD_INCLUDE, adapter: :json
+          end
+
           def render_without_recursive_relationships
             # testing recursive includes ('**') can't have any cycles in the
             # relationships, or we enter an infinite loop.
@@ -114,6 +126,48 @@ def test_render_resource_with_deep_include
           assert_equal(expected_deep_include_response, response)
         end
 
+        def test_render_resource_with_wildcard_include
+          get :render_resource_with_wildcard_include
+
+          response = JSON.parse(@response.body)
+
+          assert_equal(expected_wildcard_include_response, response)
+        end
+
+        def test_render_resource_with_wildcard_include_with_wildcards_disabled
+          with_wildcards_disabled do
+            get :render_resource_with_wildcard_include
+          end
+
+          expected = {
+            'author' => {
+              'id' => 1,
+              'name' => 'Steve K.'
+            }
+          }
+
+          response = JSON.parse(@response.body)
+
+          assert_equal(expected, response)
+        end
+
+        def test_render_resource_with_deep_wildcard_include_with_wildcards_disabled
+          with_wildcards_disabled do
+            get :render_resource_with_deep_wildcard_include
+          end
+
+          expected = {
+            'author' => {
+              'id' => 1,
+              'name' => 'Steve K.'
+            }
+          }
+
+          response = JSON.parse(@response.body)
+
+          assert_equal(expected, response)
+        end
+
         def test_render_with_empty_default_includes
           with_default_includes '' do
             get :render_without_include
@@ -176,6 +230,22 @@ def test_render_with_includes_overrides_default_includes
 
         private
 
+        def expected_wildcard_include_response
+          {
+            'author' => {
+              'id' => 1,
+              'name' => 'Steve K.',
+              'posts' => [
+                {
+                  'id' => 42, 'title' => 'New Post', 'body' => 'Body'
+                }
+              ],
+              'roles' => [],
+              'bio' => {}
+            }
+          }
+        end
+
         def expected_include_response
           {
             'author' => {
@@ -238,6 +308,14 @@ def with_default_includes(include_directive)
           clear_include_directive_cache
         end
 
+        def with_wildcards_disabled
+          original = ActiveModelSerializers.config.allow_wildcard
+          ActiveModelSerializers.config.allow_wildcard = false
+          yield
+        ensure
+          ActiveModelSerializers.config.allow_wildcard = original
+        end
+
         def clear_include_directive_cache
           ActiveModelSerializers
             .instance_variable_set(:@default_include_directive, nil)

test/action_controller/json_api/linked_test.rb

@@ -150,6 +150,23 @@ def test_render_resource_with_nested_has_many_include
           assert_equal expected_linked, response['included']
         end
 
+        def test_render_resource_with_nested_has_many_include_with_wildcards_disabled
+          ActiveModel::Serializer.config.allow_wildcard = false
+          get '/render_resource_with_nested_has_many_include_wildcard'
+          ActiveModel::Serializer.config.allow_wildcard = true
+          response = JSON.parse(@response.body)
+          expected_linked = [
+            {
+              'id' => '1',
+              'type' => 'authors',
+              'attributes' => {
+                'name' => 'Steve K.'
+              }
+            }
+          ]
+          assert_equal expected_linked, response['included']
+        end
+
         def test_render_resource_with_include_of_custom_key_by_original
           get '/render_resource_with_include_of_custom_key_by_original'
           response = JSON.parse(@response.body)