CODEWITHSUNDEEP
rubyruby-on-rails-4
ajinkya Jahagirdar
ajinkya Jahagirdar

Reputation: 65

how to rails one to one relationship?

I am new to rails. Please help me how to create rails one to one relationship. I have two table say abc and pqr. in models I have declared has_one:pqr in abc model and belongs_to:abc in pqr model. I don't know how to write view and controller for "pqr".

Upvotes: 1

Views: 1051

Answers (2)

BinaryMee
BinaryMee

Reputation: 2142

You could use

bin/rails generate controller Pqr hello

It will generate a controller file, a view file, a functional test file and a helper for the view,. For more information have a look at this article.

  exists  app/controllers/
  exists  app/helpers/
  create  app/views/pqr
  exists  test/functional/
  create  test/unit/helpers/
  create  app/controllers/pqr_controller.rb
  create  test/functional/pqr_controller_test.rb
  create  app/helpers/pqr_helper.rb
  create  test/unit/helpers/pqr_helper_test.rb
  create  app/views/pqr/hello.html.erb

You can add contents which will be used by your view, at your action hello in the controller pqr_controller.rb

class PqrController < ApplicationController
  def hello
    @content = "Hello World"
  end
end

Then if you want any other action and view corresponding to it later, say show, you could add an action in the controller and generate corresponding view at app/views/pqr/show.html.erb

class PqrController < ApplicationController
  def hello
    @content = "Hello World"
  end
  def show
    @contents = "Test"
  end
end

Upvotes: 2

Panos Malliakoudis
Panos Malliakoudis

Reputation: 530

Lets say we have 2 tables: person and dog

First of all you need to create a person_id in dog table. In models Than you add has_on :dog in person.rb and belongs_to :person in dog.rb

In controllers To create a dog that belongs to a person. You need to create a person first.

@person = Person.new(params[:person])
@person.save

then create his dog.

@dog = Person.create_dog(params[:dog])
@dog.save

To access a person's dog you just have to type

@person.dog

Upvotes: 1

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