form_for 정의되지 않은 메소드`model_name '오류

Question

form_for에 문제가 있습니다. 주어진 해결책에 대한 문제를 검색해도 내 문제가 해결되지 않았습니다.

나는 새로운 조리법 작성하는 양식을 할 노력하고있어 :

**app/views/recipes/new.html.erb** 
<%= form_for @recipe do |f| %> 
    <% if @recipe.errors.any? %> 
    <% end %> 

    <div class="field"> 
    <%= f.label :recipename %><br /> 
    <%= f.text_area :recipename %> 
    </div> 
    <div class="field"> 
    <%= f.label :user_id %><br /> 
    <%= f.number_field :user_id %> 
    </div> 
    <div class="actions"> 
    <%= f.submit %> 
    </div> 

**routes.rb** 
Baserecipe::Application.routes.draw do 

    resources :users 
    resources :recipes 
    .... 
    match '/createrecipe', to: 'recipes#new' 

---

**recipes_controller.rb** 
class RecipesController < ApplicationController 

    def create 
    @recipe = Recipe.new(params[:recipe]) 
    end 
end 

내가 항상 곁에 오류 받고 있어요 :

undefined method `model_name' for NilClass:Class 

을

추출 된 소스 (라인 # 1 주변) :

1: <%= form_for @recipe do |f| %> 
2: <% if @recipe.errors.any? %> 
3: <% end %> 

---

class Recipe < ActiveRecord::Base 
    attr_accessible :recipename, :instruct1, :instruct2, :instruct3, :instruct4, :instruct5, 
    :instruct6, :instruct7, :instruct8, :instruct9, :instruct10, :instruct11, :instruct12, 
    :instruct13, :instruct14, :instruct15, :instruct16, :instruct17, :instruct18, :instruct19, 
    :instruct20, :instruct21, :instruct22, :instruct23, :instruct24, :instruct25, :instruct26, 
    :instruct27, :instruct28, :instruct29, :instruct30, :preptime, :cooktime 

    belongs_to :user 
    has_many :ingredients 
    has_many :rcomments 

    validates :recipename, presence: true, length: { maximum: 140 } 
    validates :user_id, presence: true 
    validates :preptime, presence: true 
    validates :cooktime, presence: true 

    default_scope order: 'recipes.created_at DESC' 
end 

전체 추적 :

activemodel (3.2.7) lib/active_model/naming.rb:163:in `model_name_from_record_or_class' 
activemodel (3.2.7) lib/active_model/naming.rb:158:in `param_key' 
actionpack (3.2.7) lib/action_view/helpers/form_helper.rb:369:in `form_for' 
app/views/recipes/new.html.erb:3:in `_app_views_recipes_new_html_erb___168565054_39061080' 
actionpack (3.2.7) lib/action_view/template.rb:145:in `block in render' 
activesupport (3.2.7) lib/active_support/notifications.rb:125:in `instrument' 
actionpack (3.2.7) lib/action_view/template.rb:143:in `render' 
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:47:in `block (2 levels) in render_template' 
actionpack (3.2.7) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument' 
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `block in instrument' 
activesupport (3.2.7) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.7) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument' 
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:46:in `block in render_template' 
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:54:in `render_with_layout' 
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:45:in `render_template' 
actionpack (3.2.7) lib/action_view/renderer/template_renderer.rb:18:in `render' 
actionpack (3.2.7) lib/action_view/renderer/renderer.rb:36:in `render_template' 
actionpack (3.2.7) lib/action_view/renderer/renderer.rb:17:in `render' 
actionpack (3.2.7) lib/abstract_controller/rendering.rb:110:in `_render_template' 
actionpack (3.2.7) lib/action_controller/metal/streaming.rb:225:in `_render_template' 
actionpack (3.2.7) lib/abstract_controller/rendering.rb:103:in `render_to_body' 
actionpack (3.2.7) lib/action_controller/metal/renderers.rb:28:in `render_to_body' 
actionpack (3.2.7) lib/action_controller/metal/compatibility.rb:50:in `render_to_body' 
actionpack (3.2.7) lib/abstract_controller/rendering.rb:88:in `render' 
actionpack (3.2.7) lib/action_controller/metal/rendering.rb:16:in `render' 
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:40:in `block (2 levels) in render' 
activesupport (3.2.7) lib/active_support/core_ext/benchmark.rb:5:in `block in ms' 
c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/benchmark.rb:295:in `realtime' 
activesupport (3.2.7) lib/active_support/core_ext/benchmark.rb:5:in `ms' 
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:40:in `block in render' 
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:83:in `cleanup_view_runtime' 
activerecord (3.2.7) lib/active_record/railties/controller_runtime.rb:24:in `cleanup_view_runtime' 
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:39:in `render' 
actionpack (3.2.7) lib/action_controller/metal/implicit_render.rb:10:in `default_render' 
actionpack (3.2.7) lib/action_controller/metal/implicit_render.rb:5:in `send_action' 
actionpack (3.2.7) lib/abstract_controller/base.rb:167:in `process_action' 
actionpack (3.2.7) lib/action_controller/metal/rendering.rb:10:in `process_action' 
actionpack (3.2.7) lib/abstract_controller/callbacks.rb:18:in `block in process_action' 
activesupport (3.2.7) lib/active_support/callbacks.rb:414:in `_run__22188539__process_action__1016913818__callbacks' 
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `__run_callback' 
activesupport (3.2.7) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' 
activesupport (3.2.7) lib/active_support/callbacks.rb:81:in `run_callbacks' 
actionpack (3.2.7) lib/abstract_controller/callbacks.rb:17:in `process_action' 
actionpack (3.2.7) lib/action_controller/metal/rescue.rb:29:in `process_action' 
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' 
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `block in instrument' 
activesupport (3.2.7) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.7) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.7) lib/action_controller/metal/instrumentation.rb:29:in `process_action' 
actionpack (3.2.7) lib/action_controller/metal/params_wrapper.rb:207:in `process_action' 
activerecord (3.2.7) lib/active_record/railties/controller_runtime.rb:18:in `process_action' 
actionpack (3.2.7) lib/abstract_controller/base.rb:121:in `process' 
actionpack (3.2.7) lib/abstract_controller/rendering.rb:45:in `process' 
actionpack (3.2.7) lib/action_controller/metal.rb:203:in `dispatch' 
actionpack (3.2.7) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch' 
actionpack (3.2.7) lib/action_controller/metal.rb:246:in `block in action' 
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:73:in `call' 
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:73:in `dispatch' 
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:36:in `call' 
journey (1.0.4) lib/journey/router.rb:68:in `block in call' 
journey (1.0.4) lib/journey/router.rb:56:in `each' 
journey (1.0.4) lib/journey/router.rb:56:in `call' 
actionpack (3.2.7) lib/action_dispatch/routing/route_set.rb:600:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call' 
rack (1.4.1) lib/rack/etag.rb:23:in `call' 
rack (1.4.1) lib/rack/conditionalget.rb:25:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/head.rb:14:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/params_parser.rb:21:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/flash.rb:242:in `call' 
rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context' 
rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/cookies.rb:338:in `call' 
activerecord (3.2.7) lib/active_record/query_cache.rb:64:in `call' 
activerecord (3.2.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call' 
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `_run__305680696__call__774818341__callbacks' 
activesupport (3.2.7) lib/active_support/callbacks.rb:405:in `__run_callback' 
activesupport (3.2.7) lib/active_support/callbacks.rb:385:in `_run_call_callbacks' 
activesupport (3.2.7) lib/active_support/callbacks.rb:81:in `run_callbacks' 
actionpack (3.2.7) lib/action_dispatch/middleware/callbacks.rb:27:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/reloader.rb:65:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/remote_ip.rb:31:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call' 
railties (3.2.7) lib/rails/rack/logger.rb:26:in `call_app' 
railties (3.2.7) lib/rails/rack/logger.rb:16:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/request_id.rb:22:in `call' 
rack (1.4.1) lib/rack/methodoverride.rb:21:in `call' 
rack (1.4.1) lib/rack/runtime.rb:17:in `call' 
activesupport (3.2.7) lib/active_support/cache/strategy/local_cache.rb:72:in `call' 
rack (1.4.1) lib/rack/lock.rb:15:in `call' 
actionpack (3.2.7) lib/action_dispatch/middleware/static.rb:62:in `call' 
railties (3.2.7) lib/rails/engine.rb:479:in `call' 
railties (3.2.7) lib/rails/application.rb:220:in `call' 
rack (1.4.1) lib/rack/content_length.rb:14:in `call' 
railties (3.2.7) lib/rails/rack/log_tailer.rb:17:in `call' 
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service' 
c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service' 
c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run' 
c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread' 

Answer 1

이

# in your recipes_controller.rb 
def new 
    @recipe = Recipe.new 
end 

을 시도하고, 일치 '/ createrecipe를'제거 '새로운 조리법 #'

,

#in routes.rb 
Baserecipe::Application.routes.draw do 
resources :users 
resources :recipes 
.... 

에 대한 추가 정보를 볼 route

같은 모델 파일보기 - recipe.rb

class Recipe < ActiveRecord::Base 
... 
... 
end