Integrate CarrierWave, add image upload for campaign

Author: munen

.gitignore

@@ -25,3 +25,5 @@ config/database.yml
 /app/assets/javascripts/.tern-port
 .sourceme
 .tern-port
+
+public/uploads

Gemfile

@@ -35,6 +35,7 @@ gem 'friendly_id'
 gem 'exception_notification'
 gem 'httparty'
 gem 'timecop'
+gem 'carrierwave'
 
 #gem 'cancancan', '~> 2.0'
 

Gemfile.lock

@@ -88,6 +88,10 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
+    carrierwave (1.2.1)
+      activemodel (>= 4.0.0)
+      activesupport (>= 4.0.0)
+      mime-types (>= 1.16)
     childprocess (0.8.0)
       ffi (~> 1.0, >= 1.0.11)
     coderay (1.1.2)
@@ -384,6 +388,7 @@ DEPENDENCIES
   capistrano-rails (~> 1.3)
   capistrano-rbenv (~> 2.1)
   capybara
+  carrierwave
   coffee-rails (~> 4.2)
   country_select
   database_cleaner

app/admin/campaign.rb

@@ -2,7 +2,7 @@
 #
   permit_params :goal, :start_date, :end_date, :title, :youtube_url,
     :description, :claim, :twitter_url, :facebook_url,
-    :order_description, :order_success, :email
+    :order_description, :order_success, :email, :image
 
   # friendly_id resource lookup
   controller do
@@ -29,6 +29,7 @@ def find_resource
       input :claim
       input :goal
       input :email
+      input :image
       input :start_date
       input :end_date
       input :youtube_url

app/models/campaign.rb

@@ -1,6 +1,7 @@
 class Campaign < ApplicationRecord
   extend FriendlyId
   friendly_id :title, use: :slugged
+  mount_uploader :image, CampaignImageUploader
 
   has_many :goodies, dependent: :destroy
   has_many :supporters, through: :goodies

app/uploaders/campaign_image_uploader.rb

@@ -0,0 +1,49 @@
+class CampaignImageUploader < CarrierWave::Uploader::Base
+
+  # Include RMagick or MiniMagick support:
+  # include CarrierWave::RMagick
+  # include CarrierWave::MiniMagick
+
+  # Choose what kind of storage to use for this uploader:
+  storage :file
+  # storage :fog
+
+  # Override the directory where uploaded files will be stored.
+  # This is a sensible default for uploaders that are meant to be mounted:
+  def store_dir
+    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
+  end
+
+  # Provide a default URL as a default if there hasn't been a file uploaded:
+  # def default_url(*args)
+  #   # For Rails 3.1+ asset pipeline compatibility:
+  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
+  #
+  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
+  # end
+
+  # Process files as they are uploaded:
+  # process scale: [200, 300]
+  #
+  # def scale(width, height)
+  #   # do something
+  # end
+
+  # Create different versions of your uploaded files:
+  # version :thumb do
+  #   process resize_to_fit: [50, 50]
+  # end
+
+  # Add a white list of extensions which are allowed to be uploaded.
+  # For images you might use something like this:
+  # def extension_whitelist
+  #   %w(jpg jpeg gif png)
+  # end
+
+  # Override the filename of the uploaded files:
+  # Avoid using model.id or version_name here, see uploader/store.rb for details.
+  # def filename
+  #   "something.jpg" if original_filename
+  # end
+
+end

app/views/root/index.html.erb

@@ -8,7 +8,7 @@
     <div class="carousel-inner">
       <% @campaigns.each_with_index do |campaign, index| %>
         <div class="carousel-item <% if index == 0 %>active<% end %>">
-          <img class="d-block w-100" src="/Landsgemeindering.jpg" alt="First slide">
+          <img class="d-block w-100" src="<%= campaign.image.url %>" alt="First slide">
           <div class="carousel_text">
             <h2><%= campaign.title %></h2>
             <p class="mt-3 mb-5"><%= campaign.claim %></p>

app/views/shared/_campaign_card.html.erb

@@ -1,6 +1,6 @@
 <div class="col-md-4">
   <div class="campaign_card">
-    <img class="d-block w-100" src="/Landsgemeindering.jpg" alt="First slide">
+    <img class="d-block w-100" src="<%= campaign.image.url %>" alt="First slide">
     <div class="campaign_card_content">
 <%
 =begin

db/migrate/20171119180257_add_image_to_campaigns.rb

@@ -0,0 +1,5 @@
+class AddImageToCampaigns < ActiveRecord::Migration[5.1]
+  def change
+    add_column :campaigns, :image, :string
+  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: 20171118123625) do
+ActiveRecord::Schema.define(version: 20171119180257) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -65,6 +65,7 @@
     t.string "email"
     t.text "order_success"
     t.text "order_success_html"
+    t.string "image"
     t.index ["slug"], name: "index_campaigns_on_slug", unique: true
   end