Simplest wrapper for a Rails model, that for view or controlloer behaves like model itself (at least in my app :) ).


class FormModel
extend Forwardable

def attributes= attributes
@attributes = attributes
end

def initialize object
@object = object
end

def save
@object.attributes = @attributes
@object.save
end

def self.attr_delegators *attrs
def_delegators :@object, *attrs
end

def_delegators :@object, :errors, :to_key, :to_param, :persisted?

cattr_accessor :model_class

def self.model_name
@@model_class.model_name
end
end


Example form:

class EntryForm < ActiveForm
self.model_class = Entry
attr_delegators :text, :title, :add_to
end


In controller:

def update
@entry = EntryForm.new Entry.find(params[:id])
@entry.attributes = params[:entry]

if @entry.save
redirect_to @entry
else
render :edit
end
end


Read more: http://feeds.dzone.com/~r/dzone/snippets/~3/quhWsvpUWgc/13097