Add models needed to include images on ckeditor4

app/models/ckeditor/asset.rb

@@ -0,0 +1,4 @@
+class Ckeditor::Asset < ActiveRecord::Base
+  include Ckeditor::Orm::ActiveRecord::AssetBase
+  include Ckeditor::Backend::Paperclip
+end

app/models/ckeditor/attachment_file.rb

@@ -0,0 +1,13 @@
+class Ckeditor::AttachmentFile < Ckeditor::Asset
+  has_attached_file :data,
+                    url: '/ckeditor_assets/attachments/:id/:filename',
+                    path: ':rails_root/public/ckeditor_assets/attachments/:id/:filename'
+
+  validates_attachment_presence :data
+  validates_attachment_size :data, less_than: 100.megabytes
+  do_not_validate_attachment_file_type :data
+
+  def url_thumb
+    @url_thumb ||= Ckeditor::Utils.filethumb(filename)
+  end
+end

app/models/ckeditor/picture.rb

@@ -0,0 +1,14 @@
+class Ckeditor::Picture < Ckeditor::Asset
+  has_attached_file :data,
+                    url: '/ckeditor_assets/pictures/:id/:style_:basename.:extension',
+                    path: ':rails_root/public/ckeditor_assets/pictures/:id/:style_:basename.:extension',
+                    styles: { content: '800>', thumb: '118x100#' }
+
+  validates_attachment_presence :data
+  validates_attachment_size :data, less_than: 2.megabytes
+  validates_attachment_content_type :data, content_type: /\Aimage/
+
+  def url_content
+    url(:content)
+  end
+end

db/migrate/20180813141443_create_ckeditor_assets.rb

@@ -0,0 +1,23 @@
+class CreateCkeditorAssets < ActiveRecord::Migration
+  def self.up
+    create_table :ckeditor_assets do |t|
+      t.string  :data_file_name, null: false
+      t.string  :data_content_type
+      t.integer :data_file_size
+      t.string  :data_fingerprint
+      t.string  :type, limit: 30
+
+      # Uncomment	it to save images dimensions, if your need it
+      t.integer :width
+      t.integer :height
+
+      t.timestamps null: false
+    end
+
+    add_index :ckeditor_assets, :type
+  end
+
+  def self.down
+    drop_table :ckeditor_assets
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20180727140800) do
+ActiveRecord::Schema.define(version: 20180813141443) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -294,6 +294,20 @@ ActiveRecord::Schema.define(version: 20180727140800) do
     t.datetime "updated_at", null: false
   end
 
+  create_table "ckeditor_assets", force: :cascade do |t|
+    t.string   "data_file_name",               null: false
+    t.string   "data_content_type"
+    t.integer  "data_file_size"
+    t.string   "data_fingerprint"
+    t.string   "type",              limit: 30
+    t.integer  "width"
+    t.integer  "height"
+    t.datetime "created_at",                   null: false
+    t.datetime "updated_at",                   null: false
+  end
+
+  add_index "ckeditor_assets", ["type"], name: "index_ckeditor_assets_on_type", using: :btree
+
   create_table "comments", force: :cascade do |t|
     t.integer  "commentable_id"
     t.string   "commentable_type"
@@ -1291,6 +1305,12 @@ ActiveRecord::Schema.define(version: 20180727140800) do
   add_index "votes", ["votable_id", "votable_type", "vote_scope"], name: "index_votes_on_votable_id_and_votable_type_and_vote_scope", using: :btree
   add_index "votes", ["voter_id", "voter_type", "vote_scope"], name: "index_votes_on_voter_id_and_voter_type_and_vote_scope", using: :btree
 
+  create_table "web_sections", force: :cascade do |t|
+    t.text     "name"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "widget_cards", force: :cascade do |t|
     t.string   "title"
     t.text     "description"
@@ -1309,12 +1329,6 @@ ActiveRecord::Schema.define(version: 20180727140800) do
     t.datetime "updated_at",             null: false
   end
 
-  create_table "web_sections", force: :cascade do |t|
-    t.text     "name"
-    t.datetime "created_at", null: false
-    t.datetime "updated_at", null: false
-  end
-
   add_foreign_key "administrators", "users"
   add_foreign_key "annotations", "legacy_legislations"
   add_foreign_key "annotations", "users"