Question

我有3个模型，分别是source，twitter_source和twitter_aggregation_method模型。

他们的关系设置如下：

sources.rb

has_many :twitter_sources

twitter_sources.rb

has_one :twitter_aggregation_method
belongs_to :source

twitter_aggregation_method.rb

belongs_to :twitter_source

当我尝试创建一个新的twitter_aggregation_method时，我收到以下错误：

 NoMethodError in TwitterAggregationMethodsController#create 
 undefined method `twitter_source' for #<Source:0xb331fa20>

我的 twitter_aggregation_methods_controller.rb 设置如下：

class TwitterAggregationMethodsController < ApplicationController
  before_action :set_twitter_aggregation_method, only: [:show, :edit, :update, :destroy]
  before_filter :get_twitter_source, :get_source

  def index
    @twitter_aggregation_methods = @twitter_source.twitter_aggregation_method
  end

  def show
    @twitter_aggregation_method = @twitter_source.twitter_aggregation_methods.find(params[:id])
  end

  def new
    @twitter_aggregation_method = TwitterAggregationMethod.new
  end

 def edit
 end

def create
  source = @source
  twitter_source = @twitter_source
  @twitter_aggregation_method = source.twitter_source.twitter_aggregation_method.new(twitter_aggregation_method_params)
respond_to do |format|
  if @twitter_aggregation_method.save
    format.html { redirect_to [@twitter_source, @twitter_aggregation_method], notice: 'Twitter aggregation method was successfully created.' }
    format.json { render action: 'show', status: :created, location: [@twitter_source, @twitter_aggregation_method]}
  else
    format.html { render action: 'new' }
    format.json { render json: @twitter_aggregation_method.errors, status: :unprocessable_entity }
  end
end
end

def update
respond_to do |format|
  if @twitter_aggregation_method.update(twitter_aggregation_method_params)
    format.html { redirect_to [@twitter_source, @twitter_aggregation_method], notice: 'Twitter aggregation method was successfully updated.' }
    format.json { head :no_content }
  else
    format.html { render action: 'edit' }
    format.json { render json: @twitter_aggregation_method.errors, status: :unprocessable_entity }
  end
end
end

def destroy
  @twitter_aggregation_method.destroy
  respond_to do |format|
    format.html { redirect_to twitter_aggregation_methods_url }
    format.json { head :no_content }
  end
end


def get_source
  @source = Source.find(params[:source_id])
end

def get_twitter_source
  @twitter_source = TwitterSource.find(params[:twitter_source_id])
end



private

def set_twitter_aggregation_method
  @twitter_aggregation_method = TwitterAggregationMethod.find(params[:id])
end

def twitter_aggregation_method_params
  params.require(:twitter_aggregation_method).permit(:twitter_source_id, :tweets, :retweets, :favourites)
end
end

我的 routes.rb 如下：

resources :sources do
 resources :rss_sources
 resources :twitter_sources do
   resources :twitter_aggregation_methods
   resources :influencer_trends do
     resources :trends
   end
  end
end

Answer 1

我认为您打算使用source.twitter_sources而不是source.twitter_source

NoMethodError：未定义的方法`twitter_source'用于＃<source：0xb34cec68> </source：0xb34cec68>

1 个答案: