@ project.impressionist_count - 錯誤的參數數目（2給出，預計0..1）

我用導軌5@ project.impressionist_count - 錯誤的參數數目（2給出，預計0..1）

我想算的意見

我安裝項目的數量gem 'impressionist'

生成印象表遷移

rails g impressionist

運行遷移

rake db:migrate

鑑於項目/ show.html.erb

<%= @project.impressionist_count %>

上線<％= @ project.impressionist_count％>錯誤的參數數目（2給出，預期0..1）我顯示的錯誤我無法確定錯誤的原因。

日誌：

app/views/projects/show.html.erb:89:in `_app_views_projects_show_html_erb___149972252570834158_69970117978380' Rendering /usr/local/rvm/gems/ruby-2.3.0/gems/actionpack-5.0.0.rc1/lib/action_dispatch/middleware/templates/rescues/template_error.html.erb within rescues/layout Rendering /usr/local/rvm/gems/ruby-2.3.0/gems/actionpack-5.0.0.rc1/lib/action_dispatch/middleware/templates/rescues/_source.html.erb Rendered /usr/local/rvm/gems/ruby-2.3.0/gems/actionpack-5.0.0.rc1/lib/action_dispatch/middleware/templates/rescues/_source.html.erb (8.9ms) Rendering /usr/local/rvm/gems/ruby-2.3.0/gems/actionpack-5.0.0.rc1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb Rendered /usr/local/rvm/gems/ruby-2.3.0/gems/actionpack-5.0.0.rc1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (5.1ms) Rendering /usr/local/rvm/gems/ruby-2.3.0/gems/actionpack-5.0.0.rc1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb Rendered /usr/local/rvm/gems/ruby-2.3.0/gems/actionpack-5.0.0.rc1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.7ms) Rendered /usr/local/rvm/gems/ruby-2.3.0/gems/actionpack-5.0.0.rc1/lib/action_dispatch/middleware/templates/rescues/template_error.html.erb within rescues/layout (121.7ms) DEPRECATION WARNING: #original_exception is deprecated. Use #cause instead. (called from status_code_with_paginate at /usr/local/rvm/gems/ruby-2.3.0/gems/will_paginate-3.1.0/lib/will_paginate/railtie.rb:49)

在軌控制檯：

pry(main)> project.impressionist_count ArgumentError: wrong number of arguments (given 2, expected 0..1) from /usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.0.0.rc1/lib/active_record/associations/collection_proxy.rb:731:in `count'

示範工程

class Project < ActiveRecord::Base .......................... is_impressionable ............................. end

ProjectsController

class ProjectsController < ApplicationController before_action :set_project, only: [:show, :edit, :update] before_action :authenticate_user!, only: [:new, :edit] before_action :require_permission, only: [:edit] before_action :set_freelancer, only: [:show] before_action :set_response_current_user, only: :show, if: :exist_response? after_action :verify_authorized, only: [:update] impressionist :actions => [:show] def show @new_response = @project.responses.build impressionist(@project) end ............................................... end

來源

2016-06-01 Dmitriy

你模式應該是這樣的：

class Project < ActiveRecord::Base 
.......................... 
    include Impressionist::IsImpressionable 
    is_impressionable 

............................. 

end

在控制器：

def show 
    @new_response = @project.responses.build 
    # impressionist(@project) //comment out this line 
end

來源

2016-06-01 05:57:42 Emu

我加入包括印象派:: IsImpressionable。重新加載服務器同樣的錯誤 – Dmitriy

從控制器顯示方法註釋掉'impressionist（@project）'可能會解決問題。 – Emu

錯誤的參數數量（給定2，預期0..1） – Dmitriy

@ project.impressionist_count - 錯誤的參數數目（2給出，預計0..1）

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