Added placeholder listing image and touched up the seed file

Author: vincentlieu

app/assets/images/placeholder-listing.png

@@ -8,7 +8,7 @@ class Listing < ApplicationRecord
   has_many :favourite_listings, dependent: :destroy
   has_many :favourited_by, through: :favourite_listings, source: :user
 
-  has_one :purchase
+  has_one :purchase, dependent: :destroy
 
   validates :title, :price, :condition_id, :brand_id, :category_id, presence: :true
   validates :price, numericality: { greater_than: 0 }

app/models/listing.rb

@@ -5,7 +5,7 @@
         <% if listing.picture.attached? %>
         <%= image_tag listing.picture.service_url, class: "card-img-top" %>
     <% else %>
-        <%= image_tag "placeholder-avatar.png", class: "card-img-top" %>
+        <%= image_tag "placeholder-listing.png", alt: "listing image not attached", class: "card-img-top" %>
     <% end %>
     <hr>
         <div class="card-body d-flex flex-column justify-content-between">

app/views/shared/_display_listings.html.erb

@@ -6,6 +6,8 @@
         <div class="col">
         <% if @listing.picture.attached? %>
             <%= image_tag @listing.picture.service_url %>
+        <% else %>
+            <%= image_tag "placeholder-listing.png", alt: "listing image not attached" %>
         <% end %>
         </div>
 

app/views/shared/_listing_details.html.erb

@@ -55,7 +55,7 @@ def total_count()
 end
 
 # Generate random user accounts
-for i in 1..30
+for i in 1..10
   User.create(
     full_name: Faker::Name.name,
     email: Faker::Internet.email,
@@ -65,7 +65,8 @@ def total_count()
   )
 end
 
-for i in 1..70
+#Create listing.
+for i in 1..48
   Listing.create(
     user_id: rand(1..User.count),
     condition_id: rand(1..Condition.count),
@@ -77,7 +78,7 @@ def total_count()
   )
 end
 
-#attach image
+#Attach image to listings - Ensure that the stock images are attached correctly accordingly to the listing's brand and category.
 listings = Listing.all
 
 listings.each do |listing|