Rails: Ignoring non-existant attributes passed to create()

Question

I have the following Rails model:

class CreateFoo < ActiveRecord::Migration
  def self.up
    create_table :foo do |t|
      t.string :a
      t.string :b
            


        

Answer 1

I found a solution that works fairly well, and is ultimately a combination of the above options. It allows for invalid params to be passed (and ignored), while valid ones are mapped correctly to the object.

def self.initialize(params={})
  User.new(params.reject { |k| !User.attribute_method?(k) })
end

Now rather than calling User.new(), call User.initialize(). This will "filter" the correct params fairly elegantly.