修改

Question

我正在使用if elsif elsif elsif end语句，因为ActionView正在寻找一个create.js.erb文件，因为它是方法的名称，我得到以下错误。我试着指定：action具体但它不起作用。如果我删除elsifs并仅使用一个if end语句，则会显示:action 'create_like'..如下所示：

def create
      if params[:liked_id]
        @post = Post.find(params[:appreciation][:liked_id])
        current_user.like!(@post)
        respond_to do |format|
          format.html { redirect_to @post }
          format.js  { render :action => "create_like" }
        end
      end
    end

## ERROR

 ActionView::MissingTemplate (Missing template appreciations/create with {:handlers=>[:erb, :rjs, :builder, :rhtml, :rxml, :haml], :formats=>[:js, "application/ecmascript", "application/x-ecmascript", "*/*"], :locale=>[:en, :en]} in view paths "/Users/iHal/Desktop/WORK/GP/app/views", "/Users/iHal/.rvm/gems/ruby-1.9.2-p290@rails3/bundler/gems/rails_admin-0060ad2d78ed/app/views", "/Users/iHal/.rvm/gems/ruby-1.9.2-p290@rails3/gems/client_side_validations-3.1.0/app/views", "/Users/iHal/.rvm/gems/ruby-1.9.2-p290@rails3/gems/devise-1.3.4/app/views"):

UsersController

class AppreciationsController < ApplicationController
  before_filter :authenticate_user!

def create
  if params[:liked_id]
    @post = Post.find(params[:appreciation][:liked_id])
    current_user.like!(@post)
    respond_to do |format|
      format.html { redirect_to @post }
      format.js  { render :action => "create_like" }
    end
  elsif params[:voted_id]
    @post = Post.find(params[:appreciation][:voted_id])
    current_user.vote!(@post)
    respond_to do |format|
      format.html { redirect_to @post }
      format.js  { render :action => "create_vote" }
    end
  elsif params[:thanked_id]
    @post = Post.find(params[:appreciation][:thanked_id])
    current_user.thank!(@post)
    respond_to do |format|
      format.html { redirect_to @post }
      format.js  {render :action => 'create_thank'} 
    end
  end
end

def destroy
  if params[:liked_id]
    @post = Appreciation.find(params[:id]).liked
    current_user.unlike!(@post)
    respond_to do |format|
      format.html { redirect_to @post }
      format.js { render :action => "destroy_like" }
    end
  elsif params[:vote_id]
    @post = Appreciation.find(params[:id]).voted
    current_user.unvote!(@post)
    respond_to do |format|
      format.html { redirect_to @post }
      format.js { render :action => "destroy_vote" }
    end
  elsif params[:thanked_id]
    @post = Appreciation.find(params[:id]).thanked
    current_user.unthank!(@post)
    respond_to do |format|
      format.html { redirect_to @post }
      format.js { render :action => "destroy_thank" }
    end
  end
end
  end

修改

Started POST "/appreciations" for 127.0.0.1 at 2011-11-24 23:57:18 -0700
  Processing by AppreciationsController#create as JS
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"T3PeKRaSJSrESFTOCQ7+4LiM4BKaWkcaQ6cXpSqK38k=", "appreciation"=>{"liked_id"=>"75"}, "commit"=>"Like"}
  User Load (1.1ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 3 LIMIT 1
Completed   in 309ms
ActionView::MissingTemplate (Missing template appreciations/create with {:handlers=>[:erb, :rjs, :builder, :rhtml, :rxml, :haml], :formats=>[:js, "application/ecmascript", "application/x-ecmascript",...

Answer 1

抱歉，您应在每次return后致电respond_to。因为在调用if后，方法进程持续到结束并尝试调用render default。例如：

render 'your_template' and return

或者在你的情况下

respond_to do |format|
  format.html { redirect_to @post }
  format.js  { render :action => "create_like" }
end and return

Answer 2

如果您仔细检查请求中的参数，请注意您未通过任何params[:liked_id]，params[:voted_id]或params[:thanked_id]：

Parameters: {"utf8"=>"✓", "authenticity_token"=>"T3PeKRaSJSrESFTOCQ7+4LiM4BKaWkcaQ6cXpSqK38k=", "appreciation"=>{"liked_id"=>"75"}, "commit"=>"Like"}

你宁愿通过params[:appreciation][:liked_id]。看来你应该改变你的条件：

def create
  if params[:appreciation][:liked_id]
    # ...
  elsif params[:appreciation][:voted_id]
    # ...
  elsif params[:appreciation][:thanked_id]
    # ...
  end
end

Rails 3：使用if elsif语句时出现奇怪的Actionview模板错误

UsersController

修改

2 个答案: