From c46a0e1d2fcda5e7a9b520dff27d6b2fa9dd8268 Mon Sep 17 00:00:00 2001
From: Kirill Usanov <48535087+Exterm1nate@users.noreply.github.com>
Date: Sat, 22 Feb 2025 13:34:22 +0300
Subject: [PATCH] Add registry to store relationships between Active Fields and
 Customizables (#20)

---
 CHANGELOG.md                                  |  1 +
 README.md                                     | 25 ++++++-----
 .../active_fields/customizable_concern.rb     | 13 +++++-
 .../concerns/active_fields/field_concern.rb   | 19 ++++++++-
 lib/active_fields.rb                          |  4 +-
 lib/active_fields/customizable_config.rb      | 24 -----------
 lib/active_fields/has_active_fields.rb        |  7 ++--
 lib/active_fields/registry.rb                 | 38 +++++++++++++++++
 .../active_fields/forms/_boolean.html.erb     |  2 +-
 .../views/active_fields/forms/_date.html.erb  |  2 +-
 .../active_fields/forms/_date_array.html.erb  |  2 +-
 .../active_fields/forms/_datetime.html.erb    |  2 +-
 .../forms/_datetime_array.html.erb            |  2 +-
 .../active_fields/forms/_decimal.html.erb     |  2 +-
 .../forms/_decimal_array.html.erb             |  2 +-
 .../views/active_fields/forms/_enum.html.erb  |  2 +-
 .../active_fields/forms/_enum_array.html.erb  |  2 +-
 .../active_fields/forms/_integer.html.erb     |  2 +-
 .../forms/_integer_array.html.erb             |  2 +-
 .../views/active_fields/forms/_text.html.erb  |  2 +-
 .../active_fields/forms/_text_array.html.erb  |  2 +-
 .../active_fields/forms/_boolean.html.erb     |  2 +-
 .../views/active_fields/forms/_date.html.erb  |  2 +-
 .../active_fields/forms/_date_array.html.erb  |  2 +-
 .../active_fields/forms/_datetime.html.erb    |  2 +-
 .../forms/_datetime_array.html.erb            |  2 +-
 .../active_fields/forms/_decimal.html.erb     |  2 +-
 .../forms/_decimal_array.html.erb             |  2 +-
 .../views/active_fields/forms/_enum.html.erb  |  2 +-
 .../active_fields/forms/_enum_array.html.erb  |  2 +-
 .../active_fields/forms/_integer.html.erb     |  2 +-
 .../forms/_integer_array.html.erb             |  2 +-
 .../views/active_fields/forms/_ip.html.erb    |  2 +-
 .../active_fields/forms/_ip_array.html.erb    |  2 +-
 .../views/active_fields/forms/_text.html.erb  |  2 +-
 .../active_fields/forms/_text_array.html.erb  |  2 +-
 .../active_fields/customizable_config_spec.rb | 41 -------------------
 spec/models/author_spec.rb                    | 18 ++++++--
 spec/models/group_spec.rb                     |  6 ---
 spec/models/post_spec.rb                      | 18 ++++++--
 spec/support/shared_examples/active_field.rb  | 14 +++----
 spec/support/test_methods.rb                  |  4 +-
 42 files changed, 151 insertions(+), 137 deletions(-)
 delete mode 100644 lib/active_fields/customizable_config.rb
 create mode 100644 lib/active_fields/registry.rb
 delete mode 100644 spec/lib/active_fields/customizable_config_spec.rb

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d0c8b0..07e2cfd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 - Drop support for _Rails_ < 7.1
 - Drop support for _Ruby_ < 3.1 (EOL)
 - Added search functionality
+- Added registry to store relationships between _Customizable_ types and _Active Field_ types
 
 **Breaking changes**:
 - Maximum datetime precision reduced to 6 for all _Ruby_/_Rails_ versions.
diff --git a/README.md b/README.md
index e053af7..800b613 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 [![Gem downloads count](https://img.shields.io/gem/dt/active_fields)](https://rubygems.org/gems/active_fields)
 [![Github Actions CI](https://github.com/lassoid/active_fields/actions/workflows/main.yml/badge.svg?branch=main)](https://github.com/lassoid/active_fields/actions/workflows/main.yml)
 
-**ActiveFields** is a Rails plugin that implements the Entity-Attribute-Value (EAV) pattern,
+**ActiveFields** is a _Rails_ plugin that implements the _Entity-Attribute-Value (EAV)_ pattern,
 enabling the addition of custom fields to any model at runtime without requiring changes to the database schema.
 
 ## Key Concepts
@@ -75,8 +75,6 @@ such as booleans, strings, numbers, arrays, etc.
     This command generates a controller, routes, views for managing _Active Fields_,
     along with form inputs for _Active Values_, search form and some useful helper methods that will be used in next steps.
 
-    **Note:** Don't forget to add available _Customizable_ types in generated _Active Fields_ forms.
-
     **Note:** The array field helper and search form use _Stimulus_ for interactivity.
     If your app doesn't already include _Stimulus_, you can [easily add it](https://github.com/hotwired/stimulus-rails).
     Alternatively, if you prefer not to use _Stimulus_, you should implement your own JavaScript code.
@@ -122,7 +120,7 @@ such as booleans, strings, numbers, arrays, etc.
     ```
 
     **Note:** Here we use the `active_fields_attributes=` method (as a permitted parameter),
-    that integrates well with Rails `fields_for` to generate appropriate form fields.
+    that integrates well with _Rails_ `fields_for` to generate appropriate form fields.
     Alternatively, the alias `active_fields=` can be used in contexts without `fields_for`, such as API controllers.
 
     **Note:** `compact_array_param` is a helper method, that was added by scaffold generator.
@@ -157,7 +155,7 @@ fill in _Active Values_ within _Customizable_ forms
 and search _Customizables_ using their index actions.
 
 You can also explore the [Demo app](https://github.com/lassoid/active_fields/blob/main/spec/dummy)
-where the plugin is fully integrated into a full-stack Rails application.
+where the plugin is fully integrated into a full-stack _Rails_ application.
 Feel free to explore the source code and run it locally:
 
 ```shell
@@ -819,13 +817,13 @@ Once defined, every _Active Value_ of this type will support the specified searc
 ```ruby
 # Find customizables
 Author.where_active_values([
-  { name: "main_ip", operator: "=", value: "127.0.0.1" },
+  { name: "main_ip", operator: "eq", value: "127.0.0.1" },
   { n: "all_ips", op: "#>=", v: 5 },
   { name: "all_ips", operator: "|=", value: "0.0.0.0" },
 ])
 
 # Find Active Values
-IpFinder.new(active_field: ip_active_field).search(op: "=", value: "127.0.0.1")
+IpFinder.new(active_field: ip_active_field).search(op: "eq", value: "127.0.0.1")
 IpArrayFinder.new(active_field: ip_array_active_field).search(op: "#>=", value: 5)
 ```
 
@@ -877,6 +875,7 @@ active_field.value_caster_class # Class used for values casting
 active_field.value_caster # Caster object that performs values casting
 active_field.customizable_model # Customizable model class
 active_field.type_name # Identifier of the type of this Active Field (instead of class name)
+active_field.available_customizable_types # Available Customizable types for this Active Field
 
 # Scopes:
 ActiveFields::Field::Boolean.for("Post") # Collection of Active Fields registered for the specified Customizable type
@@ -910,6 +909,8 @@ customizable.active_values # `has_many` association with Active Values linked to
 # Methods:
 customizable.active_fields # Collection of Active Fields registered for this record
 Post.active_fields # Collection of Active Fields registered for this model
+Post.allowed_field_type_names # Active Fields type names allowed for this Customizable model
+Post.allowed_field_class_names # Active Fields class names allowed for this Customizable model
 
 # Create, update or destroy Active Values.
 customizable.active_fields_attributes = [
@@ -966,14 +967,12 @@ ActiveFields.config.type_class_names # Registered Active Fields class names
 ActiveFields.config.register_field(:ip, "IpField") # Register a custom Active Field type
 ```
 
-### Customizable Config
+### Registry
 
 ```ruby
-customizable_model = Post
-customizable_model.active_fields_config # Access the Customizable's configuration
-customizable_model.active_fields_config.customizable_model # The Customizable model itself
-customizable_model.active_fields_config.types # Allowed Active Field types (e.g., `[:boolean]`)
-customizable_model.active_fields_config.types_class_names # Allowed Active Field class names (e.g., `[ActiveFields::Field::Boolean]`)
+ActiveFields.registry.add(:boolean, "Post") # Stores relation between Active Field type and customizable type. Please do not use directly.
+ActiveFields.registry.customizable_types_for(:boolean) # Returns Customizable types that allow provided Active Field type name
+ActiveFields.registry.field_type_names_for("Post") # Returns Active Field type names, allowed for given Customizable type
 ```
 
 ## Development
diff --git a/app/models/concerns/active_fields/customizable_concern.rb b/app/models/concerns/active_fields/customizable_concern.rb
index 47852cc..9d29876 100644
--- a/app/models/concerns/active_fields/customizable_concern.rb
+++ b/app/models/concerns/active_fields/customizable_concern.rb
@@ -81,8 +81,19 @@ module CustomizableConcern
     end
 
     class_methods do
+      # Collection of active fields registered for this customizable
       def active_fields
-        ActiveFields.config.field_base_class.for(model_name.name)
+        ActiveFields.config.field_base_class.for(name)
+      end
+
+      # Returns field type names allowed for this customizable model.
+      def allowed_field_type_names
+        ActiveFields.registry.field_type_names_for(name).to_a
+      end
+
+      # Returns field class names allowed for this customizable model.
+      def allowed_field_class_names
+        ActiveFields.config.fields.values_at(*allowed_field_type_names)
       end
     end
 
diff --git a/app/models/concerns/active_fields/field_concern.rb b/app/models/concerns/active_fields/field_concern.rb
index 9c6082f..cdb982c 100644
--- a/app/models/concerns/active_fields/field_concern.rb
+++ b/app/models/concerns/active_fields/field_concern.rb
@@ -89,6 +89,21 @@ def type_name
       ActiveFields.config.fields.key(type)
     end
 
+    # Returns customizable types that allow this field type.
+    #
+    # Notes:
+    # - The customizable model must be loaded to appear in this list.
+    #   Relationships between customizable models and field types are established in the `has_active_fields` method,
+    #   which is typically called within the customizable model.
+    #   If eager loading is enabled, there should be no issues.
+    #   However, if eager loading is disabled (common in development),
+    #   the list will remain incomplete until all customizable models are loaded.
+    # - Code reloading may behave incorrectly at times.
+    #   Restart your application if you make changes to the allowed types list in `has_active_fields`.
+    def available_customizable_types
+      ActiveFields.registry.customizable_types_for(type_name).to_a
+    end
+
     private
 
     def validate_default_value
@@ -107,8 +122,8 @@ def validate_default_value
     end
 
     def validate_customizable_model_allows_type
-      allowed_types = customizable_model&.active_fields_config&.types || []
-      return true if allowed_types.include?(type_name)
+      allowed_type_names = ActiveFields.registry.field_type_names_for(customizable_type).to_a
+      return true if allowed_type_names.include?(type_name)
 
       errors.add(:customizable_type, :inclusion)
       false
diff --git a/lib/active_fields.rb b/lib/active_fields.rb
index 901f917..f336c6a 100644
--- a/lib/active_fields.rb
+++ b/lib/active_fields.rb
@@ -18,7 +18,7 @@ def eager_load!
 
   eager_autoload do
     autoload :Config
-    autoload :CustomizableConfig
+    autoload :Registry
     autoload :HasActiveFields
   end
 
@@ -95,5 +95,7 @@ def config
     end
 
     alias_method :configure, :config
+
+    def registry = Registry.instance
   end
 end
diff --git a/lib/active_fields/customizable_config.rb b/lib/active_fields/customizable_config.rb
deleted file mode 100644
index 7f2b92e..0000000
--- a/lib/active_fields/customizable_config.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-# frozen_string_literal: true
-
-module ActiveFields
-  class CustomizableConfig
-    attr_reader :customizable_model, :types
-
-    def initialize(customizable_model)
-      @customizable_model = customizable_model
-    end
-
-    def types=(value)
-      invalid_types = value - ActiveFields.config.type_names
-      if invalid_types.any?
-        raise ArgumentError, "undefined ActiveFields types provided for #{customizable_model}: #{invalid_types}"
-      end
-
-      @types = value
-    end
-
-    def types_class_names
-      ActiveFields.config.fields.values_at(*types)
-    end
-  end
-end
diff --git a/lib/active_fields/has_active_fields.rb b/lib/active_fields/has_active_fields.rb
index 4433ded..6e27589 100644
--- a/lib/active_fields/has_active_fields.rb
+++ b/lib/active_fields/has_active_fields.rb
@@ -6,13 +6,12 @@ module HasActiveFields
     extend ActiveSupport::Concern
 
     class_methods do
-      attr_reader :active_fields_config
-
       def has_active_fields(types: ActiveFields.config.type_names)
         include CustomizableConcern
 
-        @active_fields_config = CustomizableConfig.new(self)
-        @active_fields_config.types = types
+        types.each do |field_type|
+          ActiveFields.registry.add(field_type, name)
+        end
       end
     end
   end
diff --git a/lib/active_fields/registry.rb b/lib/active_fields/registry.rb
new file mode 100644
index 0000000..ac11df8
--- /dev/null
+++ b/lib/active_fields/registry.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+module ActiveFields
+  # Storage for configured relations between active fields and customizable models
+  class Registry
+    include Singleton
+
+    def initialize
+      @customizables = {}
+      @fields = {}
+    end
+
+    # Add relation between active field type and customizable type
+    def add(field_type_name, customizable_type)
+      if ActiveFields.config.type_names.exclude?(field_type_name)
+        raise ArgumentError, "undefined ActiveFields type provided for #{customizable_type}: #{field_type_name}"
+      end
+
+      @customizables[field_type_name] ||= Set.new
+      @customizables[field_type_name] << customizable_type
+
+      @fields[customizable_type] ||= Set.new
+      @fields[customizable_type] << field_type_name
+
+      nil
+    end
+
+    # Returns customizable types that allow provided active field type name
+    def customizable_types_for(field_type_name)
+      @customizables[field_type_name]
+    end
+
+    # Returns active field type names, allowed for given customizable type
+    def field_type_names_for(customizable_type)
+      @fields[customizable_type]
+    end
+  end
+end
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_boolean.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_boolean.html.erb
index 28c1620..b9a037f 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_boolean.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_boolean.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_date.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_date.html.erb
index 6bde6df..3dfe252 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_date.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_date.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_date_array.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_date_array.html.erb
index 86929b1..ecb24a9 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_date_array.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_date_array.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_datetime.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_datetime.html.erb
index 7bc9229..7e52f63 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_datetime.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_datetime.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_datetime_array.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_datetime_array.html.erb
index a7f2e5b..5854ecf 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_datetime_array.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_datetime_array.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_decimal.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_decimal.html.erb
index 92f098c..188e782 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_decimal.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_decimal.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_decimal_array.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_decimal_array.html.erb
index dce9214..6b0605f 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_decimal_array.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_decimal_array.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_enum.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_enum.html.erb
index 4231800..5669827 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_enum.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_enum.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_enum_array.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_enum_array.html.erb
index ab93963..0313892 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_enum_array.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_enum_array.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_integer.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_integer.html.erb
index 0bf2c6d..7b153e5 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_integer.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_integer.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_integer_array.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_integer_array.html.erb
index 4e64d37..d7bac16 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_integer_array.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_integer_array.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_text.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_text.html.erb
index ba27a9b..009d861 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_text.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_text.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_text_array.html.erb b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_text_array.html.erb
index c4b722a..491e11b 100644
--- a/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_text_array.html.erb
+++ b/lib/generators/active_fields/scaffold/templates/views/active_fields/forms/_text_array.html.erb
@@ -24,7 +24,7 @@
 
   <div>
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, ["TODO: add allowed customizable model names"], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div>
diff --git a/spec/dummy/app/views/active_fields/forms/_boolean.html.erb b/spec/dummy/app/views/active_fields/forms/_boolean.html.erb
index 6c1e711..6cba484 100644
--- a/spec/dummy/app/views/active_fields/forms/_boolean.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_boolean.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author Post], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_date.html.erb b/spec/dummy/app/views/active_fields/forms/_date.html.erb
index 32f3230..e2f7cb9 100644
--- a/spec/dummy/app/views/active_fields/forms/_date.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_date.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_date_array.html.erb b/spec/dummy/app/views/active_fields/forms/_date_array.html.erb
index 6081be2..20510f8 100644
--- a/spec/dummy/app/views/active_fields/forms/_date_array.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_date_array.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author Post], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_datetime.html.erb b/spec/dummy/app/views/active_fields/forms/_datetime.html.erb
index 4f9ae82..3e26217 100644
--- a/spec/dummy/app/views/active_fields/forms/_datetime.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_datetime.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_datetime_array.html.erb b/spec/dummy/app/views/active_fields/forms/_datetime_array.html.erb
index c6d7ddc..b52237e 100644
--- a/spec/dummy/app/views/active_fields/forms/_datetime_array.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_datetime_array.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author Post], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_decimal.html.erb b/spec/dummy/app/views/active_fields/forms/_decimal.html.erb
index 7fa561a..6f4ffe0 100644
--- a/spec/dummy/app/views/active_fields/forms/_decimal.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_decimal.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author Post], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_decimal_array.html.erb b/spec/dummy/app/views/active_fields/forms/_decimal_array.html.erb
index 6697f10..88e221a 100644
--- a/spec/dummy/app/views/active_fields/forms/_decimal_array.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_decimal_array.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_enum.html.erb b/spec/dummy/app/views/active_fields/forms/_enum.html.erb
index f716d12..b38dee7 100644
--- a/spec/dummy/app/views/active_fields/forms/_enum.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_enum.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_enum_array.html.erb b/spec/dummy/app/views/active_fields/forms/_enum_array.html.erb
index 0bb2fa8..aa1d03f 100644
--- a/spec/dummy/app/views/active_fields/forms/_enum_array.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_enum_array.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_integer.html.erb b/spec/dummy/app/views/active_fields/forms/_integer.html.erb
index 8744086..ed4f35d 100644
--- a/spec/dummy/app/views/active_fields/forms/_integer.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_integer.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_integer_array.html.erb b/spec/dummy/app/views/active_fields/forms/_integer_array.html.erb
index b509a61..274fc11 100644
--- a/spec/dummy/app/views/active_fields/forms/_integer_array.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_integer_array.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_ip.html.erb b/spec/dummy/app/views/active_fields/forms/_ip.html.erb
index bbc8faf..8ba056c 100644
--- a/spec/dummy/app/views/active_fields/forms/_ip.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_ip.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author Post], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_ip_array.html.erb b/spec/dummy/app/views/active_fields/forms/_ip_array.html.erb
index 283a0d8..239eb8c 100644
--- a/spec/dummy/app/views/active_fields/forms/_ip_array.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_ip_array.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author Post], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_text.html.erb b/spec/dummy/app/views/active_fields/forms/_text.html.erb
index e63874d..0a6178c 100644
--- a/spec/dummy/app/views/active_fields/forms/_text.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_text.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/dummy/app/views/active_fields/forms/_text_array.html.erb b/spec/dummy/app/views/active_fields/forms/_text_array.html.erb
index 9023a6b..5be3293 100644
--- a/spec/dummy/app/views/active_fields/forms/_text_array.html.erb
+++ b/spec/dummy/app/views/active_fields/forms/_text_array.html.erb
@@ -14,7 +14,7 @@
 
   <div class="form-input">
     <%= f.label :customizable_type %>
-    <%= f.select :customizable_type, %w[Author], {}, { disabled: active_field.persisted? } %>
+    <%= f.select :customizable_type, active_field.available_customizable_types, {}, { disabled: active_field.persisted? } %>
   </div>
 
   <div class="form-input">
diff --git a/spec/lib/active_fields/customizable_config_spec.rb b/spec/lib/active_fields/customizable_config_spec.rb
deleted file mode 100644
index 00d2c24..0000000
--- a/spec/lib/active_fields/customizable_config_spec.rb
+++ /dev/null
@@ -1,41 +0,0 @@
-# frozen_string_literal: true
-
-RSpec.describe ActiveFields::CustomizableConfig do
-  let(:object) { described_class.new(dummy_models.sample) }
-
-  describe "types=" do
-    subject(:call_method) { object.types = value }
-
-    context "with valid elements provided" do
-      let(:value) { ActiveFields.config.type_names.sample(rand(1..ActiveFields.config.type_names.size)) }
-
-      it "sets types" do
-        call_method
-
-        expect(object.types).to eq(value)
-      end
-    end
-
-    context "with invalid elements provided" do
-      let(:value) { [ActiveFields.config.type_names.sample, :invalid] }
-
-      it "raises an error" do
-        expect do
-          call_method
-        end.to raise_error(ArgumentError)
-      end
-    end
-  end
-
-  describe "#types_class_names" do
-    subject(:call_method) { object.types_class_names }
-
-    before do
-      object.types = ActiveFields.config.type_names.sample(rand(1..ActiveFields.config.type_names.size))
-    end
-
-    it "returns class names for configured types" do
-      expect(call_method).to eq(ActiveFields.config.fields.values_at(*object.types))
-    end
-  end
-end
diff --git a/spec/models/author_spec.rb b/spec/models/author_spec.rb
index 4c0b4e7..db3f12c 100644
--- a/spec/models/author_spec.rb
+++ b/spec/models/author_spec.rb
@@ -3,9 +3,21 @@
 RSpec.describe Author do
   include_examples "customizable"
 
-  context "active_fields configuration" do
-    it "allows all types by default" do
-      expect(described_class.active_fields_config.types).to eq(ActiveFields.config.type_names)
+  context "methods" do
+    describe "##allowed_field_type_names" do
+      subject(:call_method) { described_class.allowed_field_type_names }
+
+      it "contains all field types" do
+        expect(call_method).to eq(ActiveFields.config.type_names)
+      end
+    end
+
+    describe "##allowed_field_class_names" do
+      subject(:call_method) { described_class.allowed_field_class_names }
+
+      it "contains all field class names" do
+        expect(call_method).to eq(ActiveFields.config.type_class_names)
+      end
     end
   end
 end
diff --git a/spec/models/group_spec.rb b/spec/models/group_spec.rb
index cfd1a04..73c5997 100644
--- a/spec/models/group_spec.rb
+++ b/spec/models/group_spec.rb
@@ -4,10 +4,4 @@
   it "is not a customizable" do
     expect(described_class.ancestors).not_to include(ActiveFields::CustomizableConcern)
   end
-
-  context "active_fields configuration" do
-    it "returns nil" do
-      expect(described_class.active_fields_config).to be_nil
-    end
-  end
 end
diff --git a/spec/models/post_spec.rb b/spec/models/post_spec.rb
index b68b656..04a037b 100644
--- a/spec/models/post_spec.rb
+++ b/spec/models/post_spec.rb
@@ -3,9 +3,21 @@
 RSpec.describe Post do
   include_examples "customizable"
 
-  context "active_fields configuration" do
-    it "allows only provided types" do
-      expect(described_class.active_fields_config.types).to eq(%i[boolean date_array decimal ip ip_array])
+  context "methods" do
+    describe "##allowed_field_type_names" do
+      subject(:call_method) { described_class.allowed_field_type_names }
+
+      it "contains only provided field types" do
+        expect(call_method).to eq(%i[boolean date_array decimal ip ip_array])
+      end
+    end
+
+    describe "##allowed_field_class_names" do
+      subject(:call_method) { described_class.allowed_field_class_names }
+
+      it "contains only provided field class names" do
+        expect(call_method).to eq(ActiveFields.config.fields.values_at(*%i[boolean date_array decimal ip ip_array]))
+      end
     end
   end
 end
diff --git a/spec/support/shared_examples/active_field.rb b/spec/support/shared_examples/active_field.rb
index 489f50a..f989c9f 100644
--- a/spec/support/shared_examples/active_field.rb
+++ b/spec/support/shared_examples/active_field.rb
@@ -85,15 +85,12 @@
     end
 
     describe "#validate_customizable_model_allows_type" do
-      let(:config) do
-        ActiveFields::CustomizableConfig.new(described_class).tap { _1.types = allowed_types }
-      end
-
       context "when customizable_model allows this type" do
         let(:allowed_types) { [record.type_name] }
 
         before do
-          allow(record.customizable_model).to receive(:active_fields_config).and_return(config)
+          allow(ActiveFields.registry).to receive(:field_type_names_for).with(record.customizable_type)
+            .and_return(allowed_types)
         end
 
         it "is valid" do
@@ -107,7 +104,8 @@
         let(:allowed_types) { ActiveFields.config.type_names - [record.type_name] }
 
         before do
-          allow(record.customizable_model).to receive(:active_fields_config).and_return(config)
+          allow(ActiveFields.registry).to receive(:field_type_names_for).with(record.customizable_type)
+            .and_return(allowed_types)
         end
 
         it "is invalid" do
@@ -118,10 +116,8 @@
       end
 
       context "when customizable_model does not have active_fields" do
-        let(:config) { nil }
-
         before do
-          allow(record.customizable_model).to receive(:active_fields_config).and_return(config)
+          allow(ActiveFields.registry).to receive(:field_type_names_for).with(record.customizable_type).and_return([])
         end
 
         it "is invalid" do
diff --git a/spec/support/test_methods.rb b/spec/support/test_methods.rb
index 5082f3e..f831dd1 100644
--- a/spec/support/test_methods.rb
+++ b/spec/support/test_methods.rb
@@ -50,13 +50,13 @@ def dummy_models
 
   def customizable_models_for(active_field_class_name)
     dummy_models.select do |model|
-      model.active_fields_config.types_class_names.include?(active_field_class_name)
+      model.allowed_field_class_names.include?(active_field_class_name)
     end
   end
 
   def active_field_factories_for(customizable_model)
     active_field_factory_mappings.values_at(
-      *customizable_model.active_fields_config&.types_class_names,
+      *customizable_model.allowed_field_class_names,
     )
   end