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Forms Rails 3.1脚手架未定义方法`模型名称'；零级：零级

forms ruby-on-rails-3.1

Forms Rails 3.1脚手架未定义方法`模型名称'；零级：零级,forms,ruby-on-rails-3.1,scaffold,nomethoderror,Forms,Ruby On Rails 3.1,Scaffold,Nomethoderror,帮帮我，你是我唯一的希望 我犯了以下错误，这让我发疯 球员中的诺默德罗#新 显示/home/paul/rails_projects/recrupt/app/views/players/_form.html.haml，其中第1行出现： nil:NilClass的未定义方法“model_name” 提取的源（第1行附近）： 1:=形式u表示@player do | f| 2:-如果@player.errors.any 3:#错误#解释 4:%h2=“#{pluralize（@player.error

帮帮我，你是我唯一的希望

我犯了以下错误，这让我发疯

球员中的诺默德罗#新

显示/home/paul/rails_projects/recrupt/app/views/players/_form.html.haml，其中第1行出现：

nil:NilClass的未定义方法“model_name”

提取的源（第1行附近）：

1:=形式u表示@player do | f|

2:-如果@player.errors.any

3:#错误#解释

4:%h2=“#{pluralize（@player.errors.count，“error”）}禁止保存此播放器：

模板包含跟踪：app/views/players/new.html.haml

%h1 New player

= render 'form'

= link_to 'Back', players_path

= form_for @player do |f|
  -if @player.errors.any?
    #error_explanation
      %h2= "#{pluralize(@player.errors.count, "error")} prohibited this player from being saved:"
      %ul
        - @player.errors.full_messages.each do |msg|
          %li= msg

  .field
    = f.label :first_name
    = f.text_field :first_name
  .field
    = f.label :last_name
    = f.text_field :last_name
  .field
    = f.label :scout_height
    = f.number_field :scout_height
  .field
    = f.label :scout_weight
    = f.number_field :scout_weight
  .field
    = f.label :scout_profile_url
    = f.text_field :scout_profile_url
  .field
    = f.label :scout_star_rating
    = f.number_field :scout_star_rating
  .field
    = f.label :scout_overall_ranking
    = f.number_field :scout_overall_ranking
  .field
    = f.label :scout_position_ranking
    = f.number_field :scout_position_ranking
  .field
    = f.label :scout_position
    = f.text_field :scout_position
  .field
    = f.label :espn_height
    = f.number_field :espn_height
  .field
    = f.label :espn_weight
    = f.number_field :espn_weight
  .field
    = f.label :espn_profile_url
    = f.text_field :espn_profile_url
  .field
    = f.label :espn_star_rating
    = f.number_field :espn_star_rating
  .field
    = f.label :espn_overall_ranking
    = f.number_field :espn_overall_ranking
  .field
    = f.label :espn_position_ranking
    = f.number_field :espn_position_ranking
  .field
    = f.label :espn_position
    = f.text_field :espn_position
  .field
    = f.label :rivals_height
    = f.number_field :rivals_height
  .field
    = f.label :rivals_weight
    = f.number_field :rivals_weight
  .field
    = f.label :rivals_profile_url
    = f.text_field :rivals_profile_url
  .field
    = f.label :rivals_star_rating
    = f.number_field :rivals_star_rating
  .field
    = f.label :rivals_overall_ranking
    = f.number_field :rivals_overall_ranking
  .field
    = f.label :rivals_position_ranking
    = f.number_field :rivals_position_ranking
  .field
    = f.label :rivals_position
    = f.text_field :rivals_position
  .field
    = f.label :maxprep_height
    = f.number_field :maxprep_height
  .field
    = f.label :maxprep_weight
    = f.number_field :maxprep_weight
  .field
    = f.label :maxprep_profile_url
    = f.text_field :maxprep_profile_url
  .field
    = f.label :maxprep_star_rating
    = f.number_field :maxprep_star_rating
  .field
    = f.label :maxprep_overall_ranking
    = f.number_field :maxprep_overall_ranking
  .field
    = f.label :maxprep_position_ranking
    = f.number_field :maxprep_position_ranking
  .field
    = f.label :maxprep_position
    = f.text_field :maxprep_position
  .field
    = f.label :class
    = f.number_field :class
  .field
    = f.label :school_commit
    = f.text_field :school_commit
  .field
    = f.label :loi_signed
    = f.check_box :loi_signed
  .actions
    = f.submit 'Save'
Rails.root:/home/paul/Rails\u项目/招募 应用程序跟踪|框架跟踪|完整跟踪

app/views/players/\u form.html.haml:1:in
\u app\u views\u players\u form\u html\u haml\u\u 279577567\u 106102840'
app/views/players/new.html.haml:3:in
\u app\u views\u players\u new\u html\u haml\u 860668925\u 106567710' app/controllers/players\u controller.rb:29:in'new'

我使用脚手架生成器创建了这个，它在另一个领域对我来说很好，但在这里显然不行

以下是相关文件（我对scaffold命令生成的文件所做的唯一更改是将attr_可访问添加到播放器模型）

models/player.rb

class Player < ActiveRecord::Base 

  attr_accessible :first_name, :last_name, :scout_height, :scout_weight,
  :scout_profile_url, :scout_star_rating, :scout_overall_ranking,
  :scout_position_ranking, :scout_position, :espn_height, :espn_weight,
  :espn_profile_url, :espn_star_rating, :espn_overall_ranking,
  :espn_position_ranking, :espn_position, :rivals_height, :rivals_weight,
  :rivals_profile_url, :rivals_star_rating, :rivals_overall_ranking,
  :rivals_position_ranking, :rivals_position, :maxprep_height, :maxprep_weight,
  :maxprep_profile_url, :maxprep_star_rating, :maxprep_overall_ranking,
  :maxprep_position_ranking, :maxprep_position, :class, :school_commit, :loi_signed

end
views/players/_form.html.haml

%h1 New player

= render 'form'

= link_to 'Back', players_path

= form_for @player do |f|
  -if @player.errors.any?
    #error_explanation
      %h2= "#{pluralize(@player.errors.count, "error")} prohibited this player from being saved:"
      %ul
        - @player.errors.full_messages.each do |msg|
          %li= msg

  .field
    = f.label :first_name
    = f.text_field :first_name
  .field
    = f.label :last_name
    = f.text_field :last_name
  .field
    = f.label :scout_height
    = f.number_field :scout_height
  .field
    = f.label :scout_weight
    = f.number_field :scout_weight
  .field
    = f.label :scout_profile_url
    = f.text_field :scout_profile_url
  .field
    = f.label :scout_star_rating
    = f.number_field :scout_star_rating
  .field
    = f.label :scout_overall_ranking
    = f.number_field :scout_overall_ranking
  .field
    = f.label :scout_position_ranking
    = f.number_field :scout_position_ranking
  .field
    = f.label :scout_position
    = f.text_field :scout_position
  .field
    = f.label :espn_height
    = f.number_field :espn_height
  .field
    = f.label :espn_weight
    = f.number_field :espn_weight
  .field
    = f.label :espn_profile_url
    = f.text_field :espn_profile_url
  .field
    = f.label :espn_star_rating
    = f.number_field :espn_star_rating
  .field
    = f.label :espn_overall_ranking
    = f.number_field :espn_overall_ranking
  .field
    = f.label :espn_position_ranking
    = f.number_field :espn_position_ranking
  .field
    = f.label :espn_position
    = f.text_field :espn_position
  .field
    = f.label :rivals_height
    = f.number_field :rivals_height
  .field
    = f.label :rivals_weight
    = f.number_field :rivals_weight
  .field
    = f.label :rivals_profile_url
    = f.text_field :rivals_profile_url
  .field
    = f.label :rivals_star_rating
    = f.number_field :rivals_star_rating
  .field
    = f.label :rivals_overall_ranking
    = f.number_field :rivals_overall_ranking
  .field
    = f.label :rivals_position_ranking
    = f.number_field :rivals_position_ranking
  .field
    = f.label :rivals_position
    = f.text_field :rivals_position
  .field
    = f.label :maxprep_height
    = f.number_field :maxprep_height
  .field
    = f.label :maxprep_weight
    = f.number_field :maxprep_weight
  .field
    = f.label :maxprep_profile_url
    = f.text_field :maxprep_profile_url
  .field
    = f.label :maxprep_star_rating
    = f.number_field :maxprep_star_rating
  .field
    = f.label :maxprep_overall_ranking
    = f.number_field :maxprep_overall_ranking
  .field
    = f.label :maxprep_position_ranking
    = f.number_field :maxprep_position_ranking
  .field
    = f.label :maxprep_position
    = f.text_field :maxprep_position
  .field
    = f.label :class
    = f.number_field :class
  .field
    = f.label :school_commit
    = f.text_field :school_commit
  .field
    = f.label :loi_signed
    = f.check_box :loi_signed
  .actions
    = f.submit 'Save'
routes.rb

Recruits::Application.routes.draw do

  resources :schools
  resources :players

  #get \"users\/show\"

  root :to => "home#index"

  devise_for :users
  resources :users, :only => :show
end
我在这里猜测，但我相信这是因为你给了你的玩家模型一个叫做“类”的属性，你应该把它改为：Player_class或者别的什么。类是一个保留字。您还应该更新_form.html.erb和index.html.erb以及show.html.erb文件，以使用此新名称。

谢谢David，我已更改了播放器型号命名。我已经做了一些其他的事情来解决这个问题，但回头看，这似乎是可行的，所以我很确定这是由于你的建议，而不是我的其他工作。