Rails Nested Form and dependent relationships

Question

I currently have a few models, users, clients, addresses and contacts.

I used scaffold to create my client model which only contains name, leadsource and DBA. It is currently working just fine.

My address and contact was created separately as a client can have many addresses and contacts and they require a client_id to set up the relationship.

Assuming I am using your standard crud operations, is there any way to set up a single nested form that will allow me to add all 3 at once?

Martin M · Accepted Answer · 2015-12-19 21:35:39Z

1

Sure, the standard way is fields_for.
But normally you also want to dynamically add and remove associated objects (i.e. addresses) and that's a bit more advanced.

There are gems to help you. i.e. cocoon and a great railscast: episode 403.

Unfortunately it's a pro episode, but investing the $9 is well worth it, as the railscasts really are a source of inspiration (at least for me).

I assume, you already have the associations or create them:

rails generate migration AddClientReferenceToAddress client:references
rake db:migrate

and in models:

class Client < ActiveRecord::Base
  has_many :addresses
end

class Address < ActiveRecord::Base
  belongs_to :client
end

edited Dec 19, 2015 at 21:35

answered Dec 19, 2015 at 21:26

Martin M

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5 Comments

Juan Pablo Ugas Over a year ago

Thanks Martin! For removing objects together I would just add dependency into the relationship on the model, correct?

Juan Pablo Ugas Over a year ago

I've always debated signing up for railcast but I took your word on it and just went with it, Cacoon looks exactly like what I need! I appreciate the help!

Martin M Over a year ago

unfortunately Ryan stoppt creating new railscasts more than two years ago. I hope he's fine.

Juan Pablo Ugas Over a year ago

Cocoon is magic! Took me a bit to figure it out as the documentation for your standard coding isn't very easily obtainable but once I got it running it's really cool. Have you ever tried to display cocoon in tabs? Is there an easy way to do this?

Martin M Over a year ago

yes, I also use it in tabs, even several cocoons on one tab. Runs like charm. I use fieldsets to wrap the partials of one association and cocoon stay in this fieldset and doesn't disturb others. b.t.w think about accepting my answer.

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