/ Ruby on Rails
/
method

with_options

v2.1.0 - Show latest stable - Class: Object
with_options(options)
public

An elegant way to refactor out common options 

  with_options :order => 'created_at', :class_name => 'Comment' do |post|
    post.has_many :comments, :conditions => ['approved = ?', true], :dependent => :delete_all
    post.has_many :unapproved_comments, :conditions => ['approved = ?', false]
    post.has_many :all_comments
  end

Can also be used with an explicit receiver: 

  map.with_options :controller => "people" do |people|
    people.connect "/people",     :action => "index"
    people.connect "/people/:id", :action => "show"
  end

3Notes

Nested with_options

Pilaf · Feb 23, 20096 thanks

You can nest with_options blocks, and you can even use the same name for the block parameter each time. E.g.:

class Product
with_options :dependent => :destroy do |product|
  product.with_options :class_name => 'Media' do |product|
    product.has_many :images, :conditions => {:content_type => 'image'}
    product.has_many :videos, :conditions => {:content_type => 'video'}
  end
  
  product.has_many :comments
end
end

This can be useful for conditional validation

himn1 · Oct 7, 2010

http://rubyquicktips.tumblr.com/post/411400798/conditional-validation-using-with-options-to-improve

Beware nested with_options clobbers!

kwerle · May 18, 2012

Careful: with_options :foo => :bar do |something| something.with_options :foo => :baz do |inner| what_is(:foo) end end

:foo will be :baz. It will not be [:bar, :baz], for example.

This bit me when trying to do nested with_options for validation where both had :if => something.