Why am I getting an undefined method `deep_merge' for ActionController::Parameters error?

Question

In my Rails 5 app I am trying to do this in a controller:

  def create
    company_params = params.require(:company).permit(
      :name,
      :email,
      :people_attributes => [
        :first_name,
        :last_name
      ]
    ).deep_merge(
      :creator_id => current_user.id,
      :people_attributes => [
        :creator_id => current_user.id
      ]
    )
    @company = current_account.companies.build(company_params)
    if @company.save
      flash[:success] = "Company created."
      redirect_to companies_path
    else
      render :new
    end
  end

For some reason I am getting this error, though:

undefined method `deep_merge' for ActionController::Parameters:0x007fa24c39cfb0

What am I missing here?

Answer 1

OK, I couldn't get deep_merge to work, so I ended up doing this:

  def create
    company_params = params.require(:company).permit(
      :name, 
      :email,
      :people_attributes => [
        :first_name,
        :last_name
      ]
    )
    @company = current_account.companies.build(company_params)
    @company.creator = current_user
    @person = @company.people.last
    @person.account = current_account
    @person.creator = current_user
    if @company.save
      flash[:success] = "Company created."
      redirect_to companies_path
    else
      render :new
    end
  end

Not sure if this is good or bad practice. Feedback appreciated!