Paperclip: Stay put on edit
- by EricR
When a user edits something in my application, they're forced to re-upload their image via paperclip even if they aren't changing it. Failing to do so will cause an error, since I validate_presence_of :image. This is quite annoying.
How can I make it so Paperclip won't update its attributes if a user simply doesn't supply a new image on an edit?
The photo controller is fresh out of Rails' scaffold generator. The rest of the source code is provided below.
models/accommodation.rb
class Accommodation < ActiveRecord::Base
attr_accessible :photo
validates_presence_of :photo
has_one :photo
has_many :notifications
belongs_to :user
accepts_nested_attributes_for :photo, :allow_destroy => true
end
controllers/accommodation_controller.rb
class AccommodationsController < ApplicationController
def index
@accommodations = Accommodation.all
end
def show
@accommodation = Accommodation.find(params[:id])
rescue ActiveRecord::RecordNotFound
flash[:error] = "Accommodation not found."
redirect_to :home
end
def new
@accommodation = current_user.accommodations.build
@accommodation.build_photo
end
def create
@accommodation = current_user.accommodations.build(params[:accommodation])
if @accommodation.save
flash[:notice] = "Successfully created your accommodation."
redirect_to @accommodation
else
@accommodation.build_photo
render :new
end
end
def edit
@accommodation = Accommodation.find(params[:id])
@accommodation.build_photo
rescue ActiveRecord::RecordNotFound
flash[:error] = "Accommodation not found."
redirect_to :home
end
def update
@accommodation = Accommodation.find(params[:id])
if @accommodation.update_attributes(params[:accommodation])
flash[:notice] = "Successfully updated accommodation."
redirect_to @accommodation
else
@accommodation.build_photo
render :edit
end
end
def destroy
@accommodation = Accommodation.find(params[:id])
@accommodation.destroy
flash[:notice] = "Successfully destroyed accommodation."
redirect_to :inkeep
end
end
models/photo.rb
class Photo < ActiveRecord::Base
attr_accessible :image, :primary
belongs_to :accommodation
has_attached_file :image,
:styles => {
:thumb=> "100x100#",
:small => "150x150>" }
end
