#after_cast

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
+## 2.4.0 (2023-12-22)
+* Added: You can implement an `#after_cast` that is called with the original record when calling `ActiveType.cast`.
+ Thanks to @MaximilianoGarciaRoe.
+
 ## 2.3.4 (2023-05-11)
 
 * Fixed: ActiveType.cast preserves `.strict_loading?` and `.readonly?`

Gemfile.5.2.mysql2.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    active_type (2.3.4)
+    active_type (2.4.0)
       activerecord (>= 3.2)
 
 GEM

Gemfile.5.2.pg.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    active_type (2.3.4)
+    active_type (2.4.0)
       activerecord (>= 3.2)
 
 GEM

Gemfile.5.2.sqlite3.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    active_type (2.3.4)
+    active_type (2.4.0)
       activerecord (>= 3.2)
 
 GEM

Gemfile.6.0.sqlite3.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    active_type (2.3.4)
+    active_type (2.4.0)
       activerecord (>= 3.2)
 
 GEM

Gemfile.6.1.pg.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    active_type (2.3.4)
+    active_type (2.4.0)
       activerecord (>= 3.2)
 
 GEM

Gemfile.6.1.sqlite3.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    active_type (2.3.4)
+    active_type (2.4.0)
       activerecord (>= 3.2)
 
 GEM

Gemfile.7.0.pg.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    active_type (2.3.4)
+    active_type (2.4.0)
       activerecord (>= 3.2)
 
 GEM

Gemfile.7.0.sqlite3.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    active_type (2.3.4)
+    active_type (2.4.0)
       activerecord (>= 3.2)
 
 GEM

README.md

@@ -14,13 +14,13 @@ Examples for use cases are models to support sign in:
 class SignIn < ActiveType::Object
 
   # this is not backed by a db table
-  
+
   attribute :username, :string
   attribute :password, :string
 
   validates :username, presence: true
   validates :password, presence: true
-  
+
   # ...
 
 end
@@ -38,15 +38,15 @@ class SignUp < ActiveType::Record[User]
   # this inherits from User
 
   validates :password, confirmation: true
-  
+
   after_create :send_confirmation_email
-  
+
   def send_confirmation_email
     # this should happen on sign-up, but not when creating a user in tests etc.
   end
-  
+
   # ...
-  
+
 end
 ```
 
@@ -86,12 +86,12 @@ You can define "columns" by saying `attribute`:
 
 ```ruby
 class SignIn < ActiveType::Object
-  
+
   attribute :email, :string
   attribute :date_of_birth, :date
   attribute :accepted_terms, :boolean
   attribute :account_type
-  
+
 end
 ```
 
@@ -103,7 +103,7 @@ sign_in.date_of_birth.class # Date
 sign_in.accepted_terms? # true
 ```
 
-ActiveType knows all the types that are allowed in migrations (i.e. `:string`, `:integer`, `:float`, `:decimal`, `:datetime`, `:time`, `:date`, `:boolean`). You can also skip the type to have a virtual attribute without typecasting. 
+ActiveType knows all the types that are allowed in migrations (i.e. `:string`, `:integer`, `:float`, `:decimal`, `:datetime`, `:time`, `:date`, `:boolean`). You can also skip the type to have a virtual attribute without typecasting.
 
 **`ActiveType::Object` actually inherits from `ActiveRecord::Base`, but simply skips all database access, inspired by [ActiveRecord Tableless](https://github.com/softace/activerecord-tableless).**
 
@@ -197,15 +197,15 @@ class SignIn < ActiveType::Object
 
   attribute :email, :string
   attribute :nickname, :string
-  
+
   def email
     super.downcase
   end
-  
+
   def nickname=(value)
     super(value.titleize)
   end
-  
+
 end
 ```
 
@@ -379,6 +379,16 @@ sign_up.is_a?(SignUp) # => true
 ```
 
 
+If you need to add some special logic after casting you can add an `after_cast` method:
+
+class SignUp < ActiveType::Record[User]
+  def after_cast(user)
+    # Called with the original user upon casting.
+  end
+end
+
+
+
 Associations
 ------------
 

lib/active_type/util.rb

@@ -62,9 +62,12 @@ def cast_record(record, klass, force: false)
 
         casted[klass.inheritance_column] = klass.sti_name if using_single_table_inheritance
 
+        casted.after_cast(record) if casted.respond_to?(:after_cast)
+
         if !force
           make_record_unusable(record)
         end
+
         casted
       end
     end

lib/active_type/version.rb

@@ -1,3 +1,3 @@
 module ActiveType
-  VERSION = '2.3.4'
+  VERSION = '2.4.0'
 end

spec/active_type/util_spec.rb

@@ -3,8 +3,17 @@
 module UtilSpec
 
   class BaseRecord < ActiveRecord::Base
+
     self.table_name = 'records'
     has_many :associated_records
+
+    attr_reader :after_cast_called_with
+
+    def after_cast(*args)
+      # will expect this to be called
+      @after_cast_called_with = args
+    end
+
   end
 
   class ExtendedRecord < ActiveType::Record[BaseRecord]
@@ -79,6 +88,12 @@ class AssociatedRecord < ActiveRecord::Base
         expect(extended_record.persisted_string).to eq('foo')
       end
 
+      it 'calls "after_cast" with the original record after casting' do
+        base_record = UtilSpec::BaseRecord.create!
+        extended_record = ActiveType::Util.cast(base_record, UtilSpec::BaseRecord)
+        expect(extended_record.after_cast_called_with).to eq([base_record])
+      end
+
       context 'casting without copying the @association cache' do
         # When casting, the @association_cache is not copied, because of Issues #146, #147 and #148.
         # This may be unexpected to a user of Active Type, so we decided to not allow