ActiveModel is a class to be implemented by each ORM to allow Rails to generate customized controller code.

The API has the same methods as ActiveRecord, but each method returns a string that matches the ORM API.

For example:

ActiveRecord::Generators::ActiveModel.find(Foo, "params[:id]")
# => "Foo.find(params[:id])"

DataMapper::Generators::ActiveModel.find(Foo, "params[:id]")
# => "Foo.get(params[:id])"

On initialization, the ActiveModel accepts the instance name that will receive the calls:

builder = ActiveRecord::Generators::ActiveModel.new "@foo"
builder.save # => "@foo.save"

The only exception in ActiveModel for ActiveRecord is the use of self.build instead of self.new.

Methods

Attributes

[R] name

Class Public methods

all(klass)

Used for:

  • GET index

📝 Source code 
# File railties/lib/rails/generators/active_model.rb, line 38
      def self.all(klass)
        "#{klass}.all"
      end
🔎 See on GitHub

build(klass, params = nil)

Used for:

  • GET new

  • POST create

📝 Source code 
# File railties/lib/rails/generators/active_model.rb, line 56
      def self.build(klass, params = nil)
        if params
          "#{klass}.new(#{params})"
        else
          "#{klass}.new"
        end
      end
🔎 See on GitHub

find(klass, params = nil)

Used for:

  • GET show

  • GET edit

  • PATCH / PUT update

  • DELETE destroy

📝 Source code 
# File railties/lib/rails/generators/active_model.rb, line 48
      def self.find(klass, params = nil)
        "#{klass}.find(#{params})"
      end
🔎 See on GitHub

new(name)

📝 Source code 
# File railties/lib/rails/generators/active_model.rb, line 31
      def initialize(name)
        @name = name
      end
🔎 See on GitHub

Instance Public methods

destroy()

Used for:

  • DELETE destroy

📝 Source code 
# File railties/lib/rails/generators/active_model.rb, line 89
      def destroy
        "#{name}.destroy!"
      end
🔎 See on GitHub

errors()

Used for:

  • POST create

  • PATCH / PUT update

📝 Source code 
# File railties/lib/rails/generators/active_model.rb, line 82
      def errors
        "#{name}.errors"
      end
🔎 See on GitHub

save()

Used for:

  • POST create

📝 Source code 
# File railties/lib/rails/generators/active_model.rb, line 67
      def save
        "#{name}.save"
      end
🔎 See on GitHub

update(params = nil)

Used for:

  • PATCH / PUT update

📝 Source code 
# File railties/lib/rails/generators/active_model.rb, line 74
      def update(params = nil)
        "#{name}.update(#{params})"
      end
🔎 See on GitHub