CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4
Mark Locklear
Mark Locklear

Reputation: 5355

How do I access params in Rails4?

I am writing my first real app in Rails 4. Here are my models...

class Instructor < ActiveRecord::Base
  has_many :tickets
end

class Ticket < ActiveRecord::Base
  belongs_to :instructor
  belongs_to :tutor
end

class Tutor < ActiveRecord::Base
  has_many :tickets
end

I generally manually set my foreign key relations in my controller like so...

app/controllers/tickets_controller.rb

 def create
    @ticket = Ticket.new(ticket_params)
    @ticket.instructor = params[:instructor_id]
    @ticket.tutor = params[:tutor_id]
    ...

I have used this convention in the past with Rails 3...but this does not work in Rails 4. I am guessing because of strong parameters. I tried using something like...

@ticket.instructor = ticket_params[:instructor_id]

...but this does not work. No error, just nothing gets saved. Here is some console output...

  Parameters: {"utf8"=>"✓", "authenticity_token"=>"afnbX2Ph2aaNj7CDnbcDI9EdA74xBBSV7oSoU4uYZ2Y=", "tutor_id"=>{"id"=>"2"}, "ticket"=>{"session_type"=>"Severe", "student"=>"John Q. Student", "student_id"=>"09098", "course_id"=>"English 111", "notes"=>""}, "instructor_id"=>{"id"=>"2"}, "commit"=>"Create Ticket"}

...as you can see the instructor and tutor ids are being send in the params. However I did a puts/inspect on ticket_params...

{"session_type"=>"Severe", "student_id"=>"09098", "student"=>"John Q. Student", "course_id"=>"English 111", "notes"=>""}

...and the instructor and tutor ids are not there. Ideas?

EDIT

ticket_params method was created by default in my controller. Here it is...

 def ticket_params
      params.require(:ticket).permit(:tutor_id, :session_type, :student_id, :student, :instructor_id, :course_id, :notes)
 end

Upvotes: 0

Views: 69

Answers (1)

jvnill
jvnill

Reputation: 29599

You need to define a method called ticket_params in the controller. Something like the following

def ticket_params
  params.require(:ticket).permit(:name, :date)
end

The method above basically tells the controller that it expects a params[:ticket] to be present and the keys passed to the model will only be :name and :date. Read more on the github repo

UPDATE: (after ticket_params method was added to the question)

Change

@ticket.instructor = params[:instructor_id]
@ticket.tutor = params[:tutor_id]

to

@ticket.instructor_id = params[:instructor_id][:id]
@ticket.tutor_id = params[:tutor_id][:id]

Upvotes: 1

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