StackOverflowを助けてください、私の唯一の希望です。Rails 3.1スカイフォールド未定義メソッド `model_name 'for nil:NilClass
私は次のエラーが発生しています。
未定義のメソッド `MODEL_NAME:ライン#1が発生/home/paul/rails_projects/recruits/app/views/players/_form.html.hamlを表示
プレーヤーでNoMethodError#新しい
「nilのために:NilClass
抽出されたソース(ライン#周り1):
1:=のform_for @player DO | | F
2:-if @ player.errors.any?
3:#error_explanation
4%のH2 = "#{(@ player.errors.count、複数形 "エラー")が}保存されることから、このプレーヤを禁止:" テンプレートインクルージョンの
トレース:app/views/players/new.html.haml
Rails.root:/ home/paul/rails_projects/recruits アプリケーショントレース|フレームワークトレース|完全なトレース
アプリ/ビュー/プレーヤー/ _form.html.haml:1:
_app_views_players__form_html_haml___279577567_106102840' app/views/players/new.html.haml:3:in
_app_views_players_new_html_haml__860668925_106567710' で:29: アプリ/コントローラ/ players_controller.rb `新に」
私が使ってこれを作成しました足場のジェネレータは、別の領域で私のためにうまくいきましたが、明らかにここにはありませんでした。
ここに関連するファイルがあります(scaffoldコマンドで生成されたファイルに対しては、attr_accessableをプレーヤーモデルに追加するだけです)。
モデル/ 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
コントローラ/ players_controller.rb
class PlayersController < ApplicationController
# GET /players
# GET /players.json
def index
@players = Player.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: @players }
end
end
# GET /players/1
# GET /players/1.json
def show
@player = Player.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: @player }
end
end
# GET /players/new
# GET /players/new.json
def new
@player = Player.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: @player }
end
end
# GET /players/1/edit
def edit
@player = Player.find(params[:id])
end
# POST /players
# POST /players.json
def create
@player = Player.new(params[:player])
respond_to do |format|
if @player.save
format.html { redirect_to @player, notice: 'Player was successfully created.' }
format.json { render json: @player, status: :created, location: @player }
else
format.html { render action: "new" }
format.json { render json: @player.errors, status: :unprocessable_entity }
end
end
end
# PUT /players/1
# PUT /players/1.json
def update
@player = Player.find(params[:id])
respond_to do |format|
if @player.update_attributes(params[:player])
format.html { redirect_to @player, notice: 'Player was successfully updated.' }
format.json { head :ok }
else
format.html { render action: "edit" }
format.json { render json: @player.errors, status: :unprocessable_entity }
end
end
end
# DELETE /players/1
# DELETE /players/1.json
def destroy
@player = Player.find(params[:id])
@player.destroy
respond_to do |format|
format.html { redirect_to players_url }
format.json { head :ok }
end
end
end
ビュー/プレーヤー/ new.html.haml
%h1 New player
= render 'form'
= link_to 'Back', players_path
ビュー/プレーヤー/ _form。 html.haml
= 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を
Recruits::Application.routes.draw do
resources :schools
resources :players
#get \"users\/show\"
root :to => "home#index"
devise_for :users
resources :users, :only => :show
end
Davidさん、ありがとうございました。Playerモデルの名前を変更しました。私はこれを回避するためにいくつかのことを行っていましたが、これを元に戻すことはうまくいくと思われますので、私はあなたの提案と私の他の回避策によるものではないと確信しています。 –