I am using CarrierWave with Rails 3.1. I am getting the following error message when I submit the form (trying to upload an image):
Error Message:
ActiveRecord::StatementInvalid in Admin::PostsController#create
NoMethodError: undefined method `name' for nil:NilClass: INSERT INTO "posts" ("body", "created_at", "draft", "image", "post_type", "title", "updated_at", "user_id") VALUES (?, ?, ?, ?, ?, ?, ?, ?)
Rails.root: /Users/aziz/Sandbox/ruby/rails/Tumblelog
Application Trace | Framework Trace | Full Trace
app/controllers/admin/posts_controller.rb:18:in `create'
Request
Parameters:
{"utf8"=>"✓",
"authenticity_token"=>"za+zNRDGNCcujnCmO726cWCo2ze1rgaXv5bL17JGaek=",
"post"=>{"image"=>#<ActionDispatch::Http::UploadedFile:0x000001014aeff0 @original_filename="AzizLight.jpeg",
@content_type="image/jpeg",
@headers="Content-Disposition: form-data; name=\"post[image]\"; filename=\"AzizLight.jpeg\"\r\nContent-Type: image/jpeg\r\n",
@tempfile=#<File:/var/folders/ky/2ddtbt0d7k1g__2ctr8njcfc0000gn/T/RackMultipart20110918-21704-hp2ajt>>,
"draft"=>"0",
"user_id"=>"2",
"post_type"=>"image"},
"commit"=>"Post"}
The problem is that I don't know where this name
comes from and I don't know what variable is being nil, so I can't debug properly (I tried to debug a log before asking here).
Line 18 corresponds to the @post.save
line in the following controller:
PostsController:
# ...
def new
@post = Post.new
@form_html_options = (params[:post_type] == "image") ? { :multipart => true } : {}
@form_partial = get_form_partial(params[:post_type])
redirect_to admin_posts_path, :alert => "You tried to create an unknown type of post..." if @form_partial.nil?
@title = "Creating a new post..."
end
def create
@post = Post.new(params[:post])
if @post.save
flash[:success] = "Post created successfully!"
redirect_to admin_post_path(@post)
else
@title = "Creating a new post..."
@form_partial = get_form_partial(params[:post][:post_type])
render 'new'
end
end
# ...
Here other files that might be needed to spot the problem:
Post (model):
attr_accessible :title, :body, :user_id, :draft, :post_type, :image
belongs_to :user
mount_uploader :image_url, ImageUploader
ImageUploader:
class ImageUploader < CarrierWave::Uploader::Base
include CarrierWave::RMagick
storage :fog
def extension_white_list
%w(jpg jpeg gif png)
end
end
new.html.erb:
<h1><%= @title %></h1>
<%= form_for @post, :url => admin_posts_path, :html => @form_html_options do |f| %>
<%= render 'form', :f => f %>
<% end %>
_form.html.erb:
<%= render 'error_messages' %>
<%= render @form_partial, :f => f %>
<p class="drop-down">
<%= f.label :draft, 'Status' %>
<%= f.select(:draft, options_for_select([["Published", 0], ["Draft", 1]], (@post.new_record? ? 0: @post.draft))) %>
</p>
<%= f.hidden_field :user_id, :value => @post.user_id || current_user.id %>
<%= f.hidden_field :post_type, :value => @post.post_type || params[:post_type] %>
<p class="button"><%= f.submit "Post", :disable_with => 'Posting...' %></p>
_image_form.html.erb (@form_partial
):
<p><%= f.file_field :image %></p>
So what it really going on please?