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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
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Attributes

[R] name

Class Public methods

all(klass)

Used for:

  • GET index

Source: show | on GitHub 

# File railties/lib/rails/generators/active_model.rb, line 38
def self.all(klass)
  "#{klass}.all"
end

build(klass, params = nil)

Used for:

  • GET new

  • POST create

Source: show | on GitHub 

# 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

find(klass, params = nil)

Used for:

  • GET show

  • GET edit

  • PATCH / PUT update

  • DELETE destroy

Source: show | on GitHub 

# File railties/lib/rails/generators/active_model.rb, line 48
def self.find(klass, params = nil)
  "#{klass}.find(#{params})"
end

new(name)

Source: show | on GitHub 

# File railties/lib/rails/generators/active_model.rb, line 31
def initialize(name)
  @name = name
end

Instance Public methods

destroy()

Used for:

  • DELETE destroy

Source: show | on GitHub 

# File railties/lib/rails/generators/active_model.rb, line 89
def destroy
  "#{name}.destroy!"
end

errors()

Used for:

  • POST create

  • PATCH / PUT update

Source: show | on GitHub 

# File railties/lib/rails/generators/active_model.rb, line 82
def errors
  "#{name}.errors"
end

save()

Used for:

  • POST create

Source: show | on GitHub 

# File railties/lib/rails/generators/active_model.rb, line 67
def save
  "#{name}.save"
end

update(params = nil)

Used for:

  • PATCH / PUT update

Source: show | on GitHub 

# File railties/lib/rails/generators/active_model.rb, line 74
def update(params = nil)
  "#{name}.update(#{params})"
end