RoR：Controller提交參數

Question

本教程我正在編寫一個條目提交控制器：http://www.communityguides.eu/articles/1

當我嘗試提交一個條目時，我得到Users can't be blank ...我不想將user_id作爲隱藏字段傳遞，對吧？那麼我應該如何更改它以自動獲取用戶的ID？

我正在使用設計進行身份驗證。 :)而我是一個完整的鐵路新手。 這是我的控制器：

 def submit 
     @entry = current_user.articles.find(params[:id]) 

     # submit only, if article is currently in draft or rejected-state 
     if (@entry.state == 0) or (@article.state == 2) 
     @entry.state = 1 
     @entry.submitted = Time.now 

     if @entry.save 
      flash[:notice] = 'Your article was successfully submitted for approval.' 
     else 
      flash[:error] = 'There was an error while submitting your article.' 
     end   
     else 
     flash[:error] = 'This article can not be submitted.' 
     end 

     respond_to do |format| 
     format.html { redirect_to(:action => 'myarticles') } 
     format.xml { head :ok } 
     end 
    end 
    # GET /entries/1/edit 
    def edit 
    @entry = Entry.find(params[:id]) 
    end 

    # POST /entries 
    # POST /entries.xml 
    def create 
    @entry = Entry.new(params[:entry]) 

    respond_to do |format| 
     if @entry.save 
     format.html { redirect_to(@entry, :notice => 'Entry was successfully created.') } 
     format.xml { render :xml => @entry, :status => :created, :location => @entry } 
     else 
     format.html { render :action => "new" } 
     format.xml { render :xml => @entry.errors, :status => :unprocessable_entity } 
     end 
    end 
    end 

    # PUT /entries/1 
    # PUT /entries/1.xml 
    def update 
    @entry = current_user.entries.find(params[:id]) 

     #if the entry has been approved, the user cannot change the title or URL. 
     if @entry.state > 2 
      params[:entry].delete(:title) 
      params[:entry].delete(:url) 
     end 
    respond_to do |format| 
     if @entry.update_attributes(params[:entry]) 
     format.html { redirect_to(@entry, :notice => 'Entry was successfully updated.') } 
     format.xml { head :ok } 
     else 
     format.html { render :action => "edit" } 
     format.xml { render :xml => @entry.errors, :status => :unprocessable_entity } 
     end 
    end 
    end 

Answer 1

從你的描述似乎試圖創建一個新的條目時，你會遇到這樣的錯誤。

def create 
    @entry = current_user.entries.new(params[:entry]) # <-- Scope to the current user 

    respond_to do |format| 
     if @entry.save 
     format.html { redirect_to(@entry, :notice => 'Entry was successfully created.') } 
     format.xml { render :xml => @entry, :status => :created, :location => @entry } 
     else 
     format.html { render :action => "new" } 
     format.xml { render :xml => @entry.errors, :status => :unprocessable_entity } 
     end 
    end  
    end