Rails Paperclip Carrierwave.. Errors - ruby-on-rails

Question

Hey I'm doing something strange. Using both Paperclip & Carrierwave to determine which i like better because I am new to rails but here is the issue.
When I create a post using Paperclip, the image gets routed to the directory but does not display/render in any view.
When I create a post using Carrierwave, the image never gets routed or renders and I get an error withing the postscontroller saying.
(undefined method `image_will_change!' for #Post:0x007fd039c02888)
app/controllers/posts_controller.rb:27:in `create'
I also get an error across the app when trying to edit any of the post that error is.
(undefined method 'image_changed?' for #Post:0x007fd03fc76fe8)
app/controllers/posts_controller.rb:44:in `block in update'
app/controllers/posts_controller.rb:43:in `update'
Heres my code:
(post.rb)
class Post < ActiveRecord::Base
attr_accessor :image
has_attached_file :content, :styles => { :medium => "300x300>", :thumb => "100x100>" }
mount_uploader :image, ImageUploader
end
(postscontroller.rb)
class PostsController < ApplicationController
before_action :set_post, only: [:show, :edit, :update, :destroy, :destroy_all]
def index
#posts = Post.all
end
def show
end
def new
#post = Post.new
end
def edit
end
def create
#post = Post.new(post_params)
respond_to do |format|
if #post.save
format.html { redirect_to #post, notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: #post }
else
format.html { render :new }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
def update
respond_to do |format|
if #post.update(post_params)
format.html { redirect_to #post, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: #post }
else
format.html { render :edit }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
def destroy
#post.destroy
respond_to do |format|
format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' }
format.json { head :no_content, :no_image }
end
end
def destroy_all
#post.destroy_all
respond_to do |format|
format.html { redirect_to posts, notice: 'All Posts have bee successfully destroyed.'}
format.json { head :no_content, :no_image}
end
end
def demo
#post = Post.all
end
private
# Use callbacks to share common setup or constraints between actions.
def set_post
#post = Post.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def post_params
params.require(:post).permit(:title, :description, :content, :image)
end
end
(imageuploader.rb)
class ImageUploader < CarrierWave::Uploader::Base
storage :file
def store_dir
"images"
end
(add_content_to_posts.rb)
class AddContentToPosts < ActiveRecord::Migration
def self.up
add_attachment :posts, :content
end
def self.down
remove_attachment :posts, :content
end
end
(add_image_to_posts.rb)
class AddImageToPosts < ActiveRecord::Migration
def change
add_column :posts, :images, :string
end
end
(Schema.rb)
create_table "posts", force: true do |t|
t.string "title"
t.string "description"
t.datetime "created_at"
t.datetime "updated_at"
t.string "content_file_name"
t.string "content_content_type"
t.integer "content_file_size"
t.datetime "content_updated_at"
t.string "images"
end