Stack Level Too Deep错误 – 我认为使用强参数生成
我认为问题可能是Rails 4中的强参数，但我不确定。
这就是我所拥有的。
我想要做的就是创建一个post ，但是当它被提交时我得到了这个错误：
Started POST "/posts" for 127.0.0.1 at 2014-08-28 06:06:57 -0500 Processing by PostsController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"daURJjzq2EMfiQZ/uiD/0ADg=", "post"=>{"status"=>"confirmed", "title"=>"Ashlee lost 10 pounds in 5 weeks", "photo"=>#<ActionDispatch::Http::UploadedFile:0x0000010652d3c8 @tempfile=#, @original_filename="Ashlee-Testimonial.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"post[photo]\"; filename=\"Ashlee-Testimonial.png\"\r\nContent-Type: image/png\r\n">, "body"=>"Ashlee lost 10 pounds in 5 weeks."}, "commit"=>"Submit"} User Load (0.5ms) SELECT "users".* FROM "users" WHERE "users"."id" = 1 ORDER BY "users"."id" ASC LIMIT 1 (0.4ms) SELECT COUNT(*) FROM "roles" INNER JOIN "users_roles" ON "roles"."id" = "users_roles"."role_id" WHERE "users_roles"."user_id" = $1 AND (((roles.name = 'admin') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL))) [["user_id", 1]] Completed 500 Internal Server Error in 77ms SystemStackError - stack level too deep: actionpack (4.1.1) lib/action_dispatch/middleware/reloader.rb:79:in `'
Post模型如下所示：
# == Schema Information # # Table name: posts # # id :integer not null, primary key # status :string(255) # title :string(255) # date :datetime # image :string(255) # body :text # created_at :datetime # updated_at :datetime # user_id :integer # ancestry :string(255) # file :string(255) # class Post < ActiveRecord::Base has_ancestry belongs_to :user resourcify mount_uploader :photo, ImageUploader mount_uploader :file, FileUploader end
我的PostsController看起来像这样：
def create @post = current_user.posts.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 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(:status, :title, :date, :photo, :body, :parent_id) end
这是我的forms部分看起来像：
关于可能导致此错误的任何想法？
更新1：
当我创建一个没有上传文件的post时，它创建很好，如下面的日志所示：
Started POST "/posts" for 127.0.0.1 at 2014-08-28 06:34:50 -0500 Processing by PostsController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"daUAvh6w4dCH3sswJ6dckYRJjzq2EMfiQZ/uiD/0ADg=", "post"=>{"status"=>"confirmed", "title"=>"Test Post", "body"=>"Does this work at all."}, "commit"=>"Submit"} User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = 1 ORDER BY "users"."id" ASC LIMIT 1 (0.4ms) SELECT COUNT(*) FROM "roles" INNER JOIN "users_roles" ON "roles"."id" = "users_roles"."role_id" WHERE "users_roles"."user_id" = $1 AND (((roles.name = 'admin') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL))) [["user_id", 1]] (0.4ms) BEGIN SQL (2.2ms) INSERT INTO "posts" ("body", "created_at", "status", "title", "updated_at", "user_id") VALUES ($1, $2, $3, $4, $5, $6) RETURNING "id" [["body", "Does this work at all."], ["created_at", "2014-08-28 11:34:50.886549"], ["status", "confirmed"], ["title", "Test Post"], ["updated_at", "2014-08-28 11:34:50.886549"], ["user_id", 1]] (0.8ms) COMMIT Redirected to http://localhost:3000/posts/2 Completed 302 Found in 83ms (ActiveRecord: 4.1ms)
因此，似乎罪魁祸首实际上是在那里的Carrierwave / Fog / Strong Parameters中。
更新2：
的Gemfile：
source 'https://rubygems.org' gem 'rails', '4.1.1' group :assets do gem 'sass-rails', '~> 4.0.3' gem 'uglifier', '>= 1.3.0' gem 'coffee-rails', '~> 4.0.0' gem "font-awesome-rails" gem 'bootstrap-sass', '~> 3.2.0' gem 'autoprefixer-rails' end group :development do gem 'annotate', github: 'ctran/annotate_models' gem 'sextant' gem "quiet_assets", ">= 1.0.2" gem 'better_errors', '~> 1.1.0' gem 'binding_of_caller', '~> 0.7.2' gem 'meta_request' gem 'execjs' gem 'therubyracer' gem "letter_opener" gem 'bullet' gem 'rack-mini-profiler' gem 'guard-rails' gem 'rb-fchange', :require=>false gem 'rb-fsevent', :require=>false gem 'rb-inotify', :require=>false gem 'guard-livereload', '~> 2.3.0', :require=>false gem 'rack-livereload', '~> 0.3.15' end group :production do gem 'rails_12factor' end gem 'jquery-rails' gem 'turbolinks' gem 'jbuilder', '~> 2.0' gem 'sdoc', '~> 0.4.0', group: :doc gem 'spring', group: :development gem 'devise', '~> 3.2.4' gem 'thin' gem 'pg' gem 'cancancan', '~> 1.8.2' gem 'rolify' gem "rmagick" gem "mini_magick" gem 'carrierwave', '~> 0.10.0' gem "fog", "~> 1.3.1" gem 'figaro', '~> 0.7.0' gem 'geocoder', '~> 1.2.2' gem 'social-share-button', '~> 0.1.6' gem 'ancestry', '~> 2.1.0' gem "simple_form"
更新3：
所以似乎这个特定的Stack Level Too Deep Error已被修复，但问题刚刚发生了变化。 我在这里创建了一个新的SO问题 – 通过Carrierwave和Fog在文件上传中的Exconn :: Errors :: SocketError
试试这个 ：
在你的gemfile中，将gem "rmagick"更改为
gem 'rmagick', :require => 'RMagick'
来自https://github.com/carrierwaveuploader/carrierwave/issues/1330
问题在于您的数据库。 您正在为photo设置强参数和装载上传器，但您的数据库具有带名称image列。 尝试将列名更改为photo可以解决您的问题。 如果你正在做任何resize的东西，rmagick也需要。