I then want to use Paperclip to have photos for each Listing. I added the appropriate code to the listings show.html.erb, the listing.rb model, the listings_controller.rb and the _form.html.erb partial.
When I try uploading an image for the Listing I get this error:
Paperclip::Error in ListingsController#update
Listing model missing required attr_accessor for 'avatar_file_name'
Line 44 of listings_controller:
def update
respond_to do |format|
if @listing.update(listing_params)
format.html { redirect_to @listing, notice: 'Listing was successfully updated.' }
format.json { head :no_content }
else
A few things to try: namely adding some code to the listing.rb model to make the acceptable images for the :avatar more robust. Here is what several stackoverflow posts mentioned adding to the listing.rb model:
validates_attachment_content_type :avatar, :content_type => %w(image/jpeg image/jpg image/png)
Unfortunately I still get the same error when I attach an image. When I don't attach an image my default image is loaded fine and the listing is created properly.
My Listing model:
class Listing < ActiveRecord::Base
has_attached_file :avatar, :styles => { :medium => "150x", :thumb => "100x100>" }, :default_url => "default.jpg"
validates_attachment_content_type :avatar, :content_type => %w(image/jpeg image/jpg image/png)
end
My _form.html.erb partial:
<%= form_for @listing, :html => { :multipart => true } do |f| %>
<% if @listing.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@listing.errors.count, "error") %> prohibited this listing from being saved:</h2>
<ul>
<% @listing.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="form-group">
<%= f.label :name %><br>
<%= f.text_field :name, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :company %><br>
<%= f.text_field :company, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :email %><br>
<%= f.text_field :email, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :phone %><br>
<%= f.text_field :phone, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :avatar %><br>
<%= f.file_field :avatar, class: "form-control" %>
</div>
<div class="form-group">
<%= f.submit class: "btn btn-primary" %>
</div>
<% end %>
My listings_controller.rb controller:
def update
respond_to do |format|
if @listing.update(listing_params)
format.html { redirect_to @listing, notice: 'Listing was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: @listing.errors, status: :unprocessable_entity }
end
end
end
...
def listing_params
params.require(:listing).permit(:name, :company, :email, :phone, :avatar)
end
And my schema.rb file
ActiveRecord::Schema.define(version: 20140329174335) do
create_table "listings", force: true do |t|
t.string "name"
t.string "company"
t.string "email"
t.string "phone"
t.datetime "created_at"
t.datetime "updated_at"
end
end
EDIT: Adding console output after running $rails generate paperclip listing avatar
(I need 10 reputation points to put in post so you have to settle for link http://i.imgur.com/c8KGTa3.png)
See Question&Answers more detail:
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