Initial commit

app/assets/javascripts/comments.coffee

+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/comments.scss

+// Place all the styles related to the Comments controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/comments_controller.rb

+class CommentsController < ApplicationController
+  def new
+  end
+end

app/helpers/comments_helper.rb

+module CommentsHelper
+end

app/models/comment.rb

+class Comment < ApplicationRecord
+  belongs_to :user
+  belongs_to :post
+end

app/views/comments/new.html.erb

+<h1>Comments#new</h1>
+<p>Find me in app/views/comments/new.html.erb</p>

app/views/products/index.html.erb

@@ -34,6 +34,9 @@
          <td>
            <%= time_ago_in_words(product.created_at) %> ago
          </td>
+         <td>
+           <%= link_to "Add Comment", new_post_comment_path(post), class: "btn btn-info" %>
+        </td>
          <td>
            <%= link_to "Edit", edit_product_path(product), class: "btn btn-primary" %>
          </td>

config/routes.rb

 Rails.application.routes.draw do
+  get 'comments/new'
   devise_for :admin_users
   devise_scope :admin_user do
     authenticated :admin_user do
@@ -14,6 +15,7 @@ Rails.application.routes.draw do
       resources :products, only: [] do
         resources :orders, only: [:new, :create]
         resources :supplies, only: [:new, :create]
+        resources :comments, only: [:new, :create]
       end
       root to: 'transactions#index', as: :authenticated_user_root
     end

db/migrate/20180716132511_create_comments.rb

+class CreateComments < ActiveRecord::Migration[5.2]
+  def change
+    create_table :comments do |t|
+      t.text :comment
+      t.references :user, foreign_key: true
+      t.references :post, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2018_07_15_111200) do
+ActiveRecord::Schema.define(version: 2018_07_16_132511) do
 
   create_table "admin_users", force: :cascade do |t|
     t.string "email", default: "", null: false
@@ -29,6 +29,16 @@ ActiveRecord::Schema.define(version: 2018_07_15_111200) do
     t.index ["reset_password_token"], name: "index_admin_users_on_reset_password_token", unique: true
   end
 
+  create_table "comments", force: :cascade do |t|
+    t.text "comment"
+    t.integer "user_id"
+    t.integer "post_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["post_id"], name: "index_comments_on_post_id"
+    t.index ["user_id"], name: "index_comments_on_user_id"
+  end
+
   create_table "products", force: :cascade do |t|
     t.string "name"
     t.text "description"

test/controllers/comments_controller_test.rb

+require 'test_helper'
+
+class CommentsControllerTest < ActionDispatch::IntegrationTest
+  test "should get new" do
+    get comments_new_url
+    assert_response :success
+  end
+
+end

test/fixtures/comments.yml

+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  comment: MyText
+  user: one
+  post: one
+
+two:
+  comment: MyText
+  user: two
+  post: two

test/models/comment_test.rb

+require 'test_helper'
+
+class CommentTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end