CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-4
Incerteza
Incerteza

Reputation: 34944

Adding a value to ActionController::Parameters on the server side

I want to add some value I'm evaluating on the server to the params. 

  def my_params
    params.require(:my_model).permit(:my_field1, :my_field2, :my_field3)
  end

  def update
    # ..................

    # checking
    my_params["my_value"].class # => ActionController::Parameters
    my_params["my_value"] # => nil

    # adding
    my_params["my_value"] = "my value's value" # => "my value's value"

    # but it's still nil
    my_params["my_value"] # => nil 

    # ..................
  end

Why can't I add it into my_params?

Upvotes: 1

Views: 4713

Answers (1)

bjhaid
bjhaid

Reputation: 9782

my_params is a method not a variable, use an instance variable instead, as below

def my_params
    @my_params = params.require(:my_model).permit(:my_field1, :my_field2, :my_field3)
end

def update
  @my_params["my_val"] = "my value"
  #....
end

Upvotes: 7

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