Ruby on Rails error: "Undefined method" call "for" result == false ": String" error in create method
When I try to create a listing in my app with an image, this error comes up:
undefined method `call' for "result == false":String.
An error occurred after installing the gem. But development shouldn't have anything to do with creating a new list?
Other parts of the app work fine and I can create new lists without images.
Error message
NoMethodError in ArtistsController#create
undefined method `call' for "result == false":String
The method it points to is a callback method in ActiveSupport found here on line 164
Anyone have any ideas what the problem might be? I'm very new to this, so if you need more information from me or need to rephrase my question, just let me know.
Gemfile
source 'https://rubygems.org'
ruby "2.0.0"
gem 'rails', '4.2.0.beta2'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.0.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 1.2'
gem 'bootstrap-sass', '~> 3.3.0'
gem 'sass-rails', '~> 5.0.0.beta1'
gem "paperclip", "~> 3.0"
gem "paperclip-dropbox", ">= 1.1.7"
gem "figaro"
gem 'devise'
group :production do
gem 'pg'
gem 'rails_12factor'
end
group :development, :test do
gem 'sqlite3'
end
group :doc do
gem 'sdoc', require: false
end
Artists_controller, exception seems to be thrown for create method in controller
class ArtistsController < ApplicationController
before_action :set_artist, only: [:show, :edit, :update, :destroy]
# GET /artists
# GET /artists.json
def index
@artists = Artist.all
end
# GET /artists/1
# GET /artists/1.json
def show
end
# GET /artists/new
def new
@artist = Artist.new
end
# GET /artists/1/edit
def edit
end
# POST /artists
# POST /artists.json
def create
@artist = Artist.new(artist_params)
respond_to do |format|
if @artist.save
format.html { redirect_to @artist, notice: 'Artist was successfully created.' }
format.json { render action: 'show', status: :created, location: @artist }
else
format.html { render action: 'new' }
format.json { render json: @artist.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /artists/1
# PATCH/PUT /artists/1.json
def update
respond_to do |format|
if @artist.update(artist_params)
format.html { redirect_to @artist, notice: 'Artist was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: @artist.errors, status: :unprocessable_entity }
end
end
end
# DELETE /artists/1
# DELETE /artists/1.json
def destroy
@artist.destroy
respond_to do |format|
format.html { redirect_to artists_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_artist
@artist = Artist.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def artist_params
params.require(:artist).permit(:name, :description, :price, :image)
end
end
User class
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
end
Executor class (listing model)
class Artist < ActiveRecord::Base
has_attached_file :image, :styles => { :medium => "200x", :thumb => "100x100>" }, :default_url
=> "/images/:style/missing.png"
validates_attachment_content_type :image, :content_type => /\Aimage\/.*\Z/
end
Form Helper
<%= form_for(@artist, :html => { :multipart => true }) do |f| %>
<% if @artist.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@artist.errors.count, "error") %> prohibited this artist from being saved:</h2>
<ul>
<% @artist.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 :description %><br>
<%= f.text_field :description, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :price %><br>
<%= f.text_field :price, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :image %><br>
<%= f.file_field :image, class: "form-control" %>
</div>
<div class="actions">
<%= f.submit class: "btn btn-primary" %>
</div>
<% end %>
Full trace
app/controllers/artists_controller.rb:27:in `create'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:161:in `block in halting'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:87:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:87:in `run_callbacks'
paperclip (3.5.4) lib/paperclip/callbacks.rb:26:in `run_paperclip_callbacks'
paperclip (3.5.4) lib/paperclip/attachment.rb:419:in `block in post_process'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:83:in `run_callbacks'
paperclip (3.5.4) lib/paperclip/callbacks.rb:26:in `run_paperclip_callbacks'
paperclip (3.5.4) lib/paperclip/attachment.rb:418:in `post_process'
paperclip (3.5.4) lib/paperclip/attachment.rb:112:in `assign'
paperclip (3.5.4) lib/paperclip/has_attached_file.rb:65:in `block in define_setter'
activerecord (4.2.0.beta2) lib/active_record/attribute_assignment.rb:54:in `public_send'
activerecord (4.2.0.beta2) lib/active_record/attribute_assignment.rb:54:in `_assign_attribute'
activerecord (4.2.0.beta2) lib/active_record/attribute_assignment.rb:41:in `block in assign_attributes'
actionpack (4.2.0.beta2) lib/action_controller/metal/strong_parameters.rb:170:in `each_pair'
actionpack (4.2.0.beta2) lib/action_controller/metal/strong_parameters.rb:170:in `each_pair'
activerecord (4.2.0.beta2) lib/active_record/attribute_assignment.rb:35:in `assign_attributes'
activerecord (4.2.0.beta2) lib/active_record/core.rb:551:in `init_attributes'
activerecord (4.2.0.beta2) lib/active_record/core.rb:272:in `initialize'
activerecord (4.2.0.beta2) lib/active_record/inheritance.rb:61:in `new'
activerecord (4.2.0.beta2) lib/active_record/inheritance.rb:61:in `new'
actionpack (4.2.0.beta2) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (4.2.0.beta2) lib/abstract_controller/base.rb:198:in `process_action'
actionpack (4.2.0.beta2) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.2.0.beta2) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:114:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:114:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:148:in `block in halting_and_conditional'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:231:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:231:in `block in halting'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:231:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:231:in `block in halting'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:166:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:166:in `block in halting'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:166:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:166:in `block in halting'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:166:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:166:in `block in halting'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:87:in `call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:87:in `run_callbacks'
actionpack (4.2.0.beta2) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (4.2.0.beta2) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.2.0.beta2) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.2.0.beta2) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (4.2.0.beta2) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.2.0.beta2) lib/active_support/notifications.rb:164:in `instrument'
actionpack (4.2.0.beta2) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.2.0.beta2) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
activerecord (4.2.0.beta2) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.2.0.beta2) lib/abstract_controller/base.rb:137:in `process'
actionview (4.2.0.beta2) lib/action_view/rendering.rb:30:in `process'
actionpack (4.2.0.beta2) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.2.0.beta2) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.2.0.beta2) lib/action_controller/metal.rb:236:in `block in action'
actionpack (4.2.0.beta2) lib/action_dispatch/routing/route_set.rb:72:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/routing/route_set.rb:72:in `dispatch'
actionpack (4.2.0.beta2) lib/action_dispatch/routing/route_set.rb:41:in `serve'
actionpack (4.2.0.beta2) lib/action_dispatch/journey/router.rb:43:in `block in serve'
actionpack (4.2.0.beta2) lib/action_dispatch/journey/router.rb:30:in `each'
actionpack (4.2.0.beta2) lib/action_dispatch/journey/router.rb:30:in `serve'
actionpack (4.2.0.beta2) lib/action_dispatch/routing/route_set.rb:750:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `catch'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.6.0.beta) lib/rack/etag.rb:23:in `call'
rack (1.6.0.beta) lib/rack/conditionalget.rb:38:in `call'
rack (1.6.0.beta) lib/rack/head.rb:13:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/flash.rb:257:in `call'
rack (1.6.0.beta) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.6.0.beta) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/cookies.rb:558:in `call'
activerecord (4.2.0.beta2) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.2.0.beta2) lib/active_record/connection_adapters/abstract/connection_pool.rb:645:in `call'
activerecord (4.2.0.beta2) lib/active_record/migration.rb:378:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.0.beta2) lib/active_support/callbacks.rb:83:in `run_callbacks'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.0.beta2) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.0.beta2) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.0.beta2) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.0.beta2) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.0.beta2) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.0.beta2) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.0.beta) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.0.beta) lib/rack/runtime.rb:17:in `call'
activesupport (4.2.0.beta2) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
rack (1.6.0.beta) lib/rack/lock.rb:17:in `call'
actionpack (4.2.0.beta2) lib/action_dispatch/middleware/static.rb:103:in `call'
rack (1.6.0.beta) lib/rack/sendfile.rb:113:in `call'
railties (4.2.0.beta2) lib/rails/engine.rb:514:in `call'
railties (4.2.0.beta2) lib/rails/application.rb:161:in `call'
rack (1.6.0.beta) lib/rack/tempfile_reaper.rb:15:in `call'
rack (1.6.0.beta) lib/rack/lint.rb:49:in `_call'
rack (1.6.0.beta) lib/rack/lint.rb:37:in `call'
rack (1.6.0.beta) lib/rack/showexceptions.rb:24:in `call'
rack (1.6.0.beta) lib/rack/commonlogger.rb:33:in `call'
rack (1.6.0.beta) lib/rack/chunked.rb:54:in `call'
rack (1.6.0.beta) lib/rack/content_length.rb:15:in `call'
rack (1.6.0.beta) lib/rack/handler/webrick.rb:89:in `service'
/Users/arezarazu/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
/Users/arezarazu/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
/Users/arezarazu/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'
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2 answers
Looking at the stack trace and the code you provided, the problem is a call has_attached_file
in the class Artist
.
I would suspect that the issue is caused by an incompatibility between paperclip version 3.5.4 and Rails 4.2. I suggest you upgrade your paperclip gem.
In the changelog for this gem, I see the list for version 4.1.1:
Bug fix: callback chain terminator is different in Rails 4.1, removes warnings
This could be the culprit.
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