feature: Adding picture to task

Gemfile

@@ -10,6 +10,7 @@ gem 'bootsnap', '>= 1.1.0', require: false
 gem 'haml-rails', '~> 2.0'
 gem 'devise_invitable', '~> 2.0.0'
 gem 'fast_jsonapi'
+gem 'carrierwave', '~> 2.0'
 
 group :development, :test do
   gem 'pry-byebug'

Gemfile.lock

@@ -58,6 +58,13 @@ GEM
       msgpack (~> 1.0)
     builder (3.2.3)
     byebug (11.0.1)
+    carrierwave (2.0.1)
+      activemodel (>= 5.0.0)
+      activesupport (>= 5.0.0)
+      addressable (~> 2.6)
+      image_processing (~> 1.1)
+      mimemagic (>= 0.3.0)
+      mini_mime (>= 0.1.3)
     coderay (1.1.2)
     concurrent-ruby (1.1.5)
     crass (1.0.4)
@@ -100,6 +107,9 @@ GEM
       ruby_parser (~> 3.5)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
+    image_processing (1.9.3)
+      mini_magick (>= 4.9.5, < 5)
+      ruby-vips (>= 2.0.13, < 3)
     launchy (2.4.3)
       addressable (~> 2.3)
     letter_opener (1.7.0)
@@ -117,6 +127,7 @@ GEM
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
     mimemagic (0.3.3)
+    mini_magick (4.9.5)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -185,6 +196,8 @@ GEM
       rspec-mocks (~> 3.8.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.2)
+    ruby-vips (2.0.15)
+      ffi (~> 1.9)
     ruby_dep (1.5.0)
     ruby_parser (3.13.1)
       sexp_processor (~> 4.9)
@@ -217,6 +230,7 @@ PLATFORMS
 
 DEPENDENCIES
   bootsnap (>= 1.1.0)
+  carrierwave (~> 2.0)
   database_cleaner
   devise_invitable (~> 2.0.0)
   factory_bot_rails

app/controllers/tasks_controller.rb

@@ -34,7 +34,7 @@ def destroy
   private
 
   def task_params
-    params.permit(:title, :body, :difficulty, :theme_id)
+    params.permit(:title, :body, :difficulty, :theme_id, picture_attributes: [:image, :id, :_destroy])
   end
 
   def render_success(task)

app/models/picture.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class Picture < ApplicationRecord
+  belongs_to :task
+
+  mount_uploader :image, PictureUploader
+end

app/models/task.rb

@@ -3,9 +3,12 @@
 class Task < ApplicationRecord
   belongs_to :theme
 
+  has_one :picture, dependent: :destroy
   has_many :user_tasks, dependent: :destroy
   has_many :users, through: :user_tasks
 
   validates :title, :body, :difficulty, presence: true
   validates :difficulty, numericality: { only_integer: true, less_than_or_equal_to: 10 }
+
+  accepts_nested_attributes_for :picture
 end

app/uploaders/picture_uploader.rb

@@ -0,0 +1,23 @@
+class PictureUploader < CarrierWave::Uploader::Base
+  include CarrierWave::MiniMagick
+
+  storage :file
+
+  def store_dir
+    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
+  end
+
+  # process scale: [200, 300]
+
+  # def scale(width, height)
+  #   # do something
+  # end
+
+  # version :thumb do
+  #   process resize_to_fit: [50, 50]
+  # end
+
+  def extension_whitelist
+    %w(jpg jpeg gif png)
+  end
+end

db/migrate/20190911072214_create_pictures.rb

@@ -0,0 +1,8 @@
+class CreatePictures < ActiveRecord::Migration[5.2]
+  def change
+    create_table :pictures do |t|
+      t.string :image
+      t.integer :task_id, index: true
+    end
+  end
+end

db/schema.rb

@@ -10,11 +10,17 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_09_10_134404) do
+ActiveRecord::Schema.define(version: 2019_09_11_072214) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
+  create_table "pictures", force: :cascade do |t|
+    t.string "image"
+    t.integer "task_id"
+    t.index ["task_id"], name: "index_pictures_on_task_id"
+  end
+
   create_table "tasks", force: :cascade do |t|
     t.string "title", null: false
     t.text "body", null: false

spec/request/tasks/create_task_spec.rb

@@ -25,6 +25,26 @@
         end
       end
 
+      context 'valid attributes with pictures' do
+        before {
+          sign_in user
+          post '/tasks', params: { title: Faker::Educator.subject,
+                                   body: Faker::Lorem.paragraph,
+                                   difficulty: rand(1..10),
+                                   theme_id: theme.id,
+                                   picture_attributes: {image: Rack::Test::UploadedFile.new(Rails.root.join('spec/support/images/image.png'), 'image/png')}}
+        }
+
+        it 'return status 200' do
+          expect(response.status).to eq 200
+        end
+
+        it 'the picture is added to the task' do
+          task = Task.last
+          expect(task.picture).to eql(Picture.last)
+        end
+      end
+
       context 'valid attributes' do
         before {
           sign_in user