Rails Create Not Creating a New Record in the Database

Question

I'm having trouble adding things from my New Form to display in the Index properly. I don't think they're being added to the database but I can't figure out why.

Routes

Rails.application.routes.draw do
  resources :coupons
end

new.html.erb

<%= form_tag coupons_path do %>
    <label>Coupon code:</label><br>
    <%= text_field_tag :'coupon[coupon_code]' %><br>
  
    <label>Store:</label><br>
    <%= text_field_tag :'coupon[store]' %><br>
  
    <%= submit_tag "Submit Coupon" %>

  <% end %>

Controller

class CouponsController < ApplicationController
    def index
        @coupons = Coupon.all
    end
    def show
        @coupon = Coupon.find(params[:id])
    end
    def new
    end

    def create
        @coupon = Coupon.new
        @coupon.coupon_code = params[:coupon_code]
        @coupon.store = params[:store]
        if @coupon.save
            redirect_to coupon_path(@coupon)
        else
            render :text => "Failed to create coupon"
        end
    end
end

My Index retains the new coupons but I think it only gets passed the id. It displays as /coupons/1 in an unordered list on the index page. Like-wise I can go to the show page but it only says "Coupon Code" and "Store," it doesn't include the data I passed it when I created it with the new form.

Arun Kumar Mohan · Accepted Answer · 2021-02-08 05:18:30Z

1

The coupon_code and store values are nested inside the coupon key since you're passing 'coupon[coupon_code]' and 'coupon[store]' as the field names to the text_field_tag method.

class CouponsController < ApplicationController
  def create
    @coupon = Coupon.new(coupon_params)
    # save coupon
  end

  private

  def coupon_params
    params.require(:coupon).permit(:coupon_code, :store)
  end
end

edited Feb 8, 2021 at 5:18

answered Feb 8, 2021 at 5:10

Arun Kumar Mohan

11.9k3 gold badges27 silver badges47 bronze badges

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