First commit!

app/controllers/todos_controller.rb

@@ -22,6 +22,7 @@ def edit
   # POST /todos
   def create
     @todo = Todo.new(todo_params)
+    @todo.img = params[:todo][:img_blob] if params[:todo][:img_blob]
 
     if @todo.save
       redirect_to @todo, notice: 'Todo was successfully created.'
@@ -32,6 +33,9 @@ def create
 
   # PATCH/PUT /todos/1
   def update
+    # save_image(todo_params)
+    @todo.img = params[:todo][:img_blob] if params[:todo][:img_blob]
+
     if @todo.update(todo_params)
       redirect_to @todo, notice: 'Todo was successfully updated.'
     else
@@ -54,6 +58,7 @@ def set_todo
 
   # Only allow a trusted parameter "white list" through.
   def todo_params
-    params.require(:todo).permit(:title)
+    params.require(:todo).permit(:title, :img_path)
   end
+
 end

app/models/todo.rb

@@ -1,2 +1,13 @@
 class Todo < ActiveRecord::Base
+
+  PATH="#{Rails.root}/public/todo_imgs"
+
+  def img=(img)
+    ext = File.extname(img.tempfile.path)
+    path = File.join(PATH, "#{self.id}_img#{ext}")
+    FileUtils.cp(img.tempfile.path, path)
+    parts = path.split("/")
+    path = "/#{parts[parts.length - 2, parts.length - 1].join("/")}"
+    self.img_path = path
+  end
 end

app/views/todos/_form.html.erb

@@ -1,5 +1,5 @@
 <%= simple_form_for @todo do |f| %>
-    <%= f.input :name %>
-
+    <%= f.input :title %>
+    <%= f.input :img_blob, :as => :file %>
     <%= f.submit %>
 <% end %>

app/views/todos/show.html.erb

@@ -1 +1,2 @@
 <%= @todo.title %>
+<img src="<%= @todo.img_path %>"/>

db/migrate/20150827184912_add_img_path_to_todos.rb

@@ -0,0 +1,5 @@
+class AddImgPathToTodos < ActiveRecord::Migration
+  def change
+  	add_column :todos, :img_path, :string
+  end
+end

db/schema.rb

@@ -11,10 +11,11 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150714225535) do
+ActiveRecord::Schema.define(version: 20150827184912) do
 
   create_table "todos", force: :cascade do |t|
     t.string "title"
+    t.string "img_path"
   end
 
   create_table "users", force: :cascade do |t|