Question

我很难过为什么这不起作用。我有一个评论系统，以及一个链接来创建一个传递2个属性的新评论; user_id和gigid。两个id都是作为整数生成的，但是当我保存评论时，gigid保存为'nil'而不是整数。

查看：

<%= link_to 'Click here to rate this user', new_user_review_path(:user_id => request.user.id, :gigid => request.gig.id) %>

这里两个ID都设置正确（根据服务器输出）。 User_id是要审阅的用户（正常工作），gigid是后验证的参考。（在我尝试保存之前正常工作）

_form：

<%= simple_form_for([@user, @user.reviews.build]) do |f| %>
<div id="rating-form">
<label>Rating</label>
</div>
<%= f.input :comment %>
<%= f.button :submit %>

<% end %>

控制器：

def new
    if user_signed_in?
    @review = current_user.reviews.new
  else
    redirect_to(root_url)
    flash[:danger] = "You must log in to rate a user"
  end
  end

def create
    @review = @user.reviews.new review_params
    @review.reviewed_id = current_user.id
       if @review.save
      redirect_to user_path(@user)
    else
      render 'new'
    end
  end

private

    def review_params
      params.require(:review).permit(:rating, :comment, :gigid, :user_id)
    end
end

点击链接时的服务器输出：

Started GET "/users/21/reviews/new?gigid=17&locale=en" for 127.0.0.1 at 2016-01-13 18:08:26 +0100
Processing by ReviewsController#new as HTML
  Parameters: {"gigid"=>"17", "locale"=>"en", "user_id"=>"21"}
  User Load (0.2ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 21]]
  User Load (0.2ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ?  ORDER BY "users"."id" ASC LIMIT 1  [["id", 1]]
  Rendered reviews/_form.html.erb (4.9ms)

然后我添加评论和评分，然后点击创建。单击“创建”时的服务器输出：

Started POST "/users/21/reviews?locale=en" for 127.0.0.1 at 2016-01-13 18:10:44 +0100
Processing by ReviewsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"RToZwvodvXxQp1/spEhgemO/oi+4rof8jREuLw27CcEsEBqFWGLeYne1CgH3kvWu9OzAV+bHvOk9g9nq8JMPnw==", "review"=>{"rating"=>"5", "comment"=>"sdfsdfdd"}, "commit"=>"Create Review", "locale"=>"en", "user_id"=>"21"}
  User Load (0.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 21]]
  User Load (0.4ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ?  ORDER BY "users"."id" ASC LIMIT 1  [["id", 1]]
   (0.1ms)  begin transaction
  SQL (0.7ms)  INSERT INTO "reviews" ("rating", "comment", "user_id", "reviewed_id", "created_at", "updated_at") VALUES (?, ?, ?, ?, ?, ?)  [["rating", 5], ["comment", "sdfsdfdd"], ["user_id", 21], ["reviewed_id", 1], ["created_at", "2016-01-13 17:10:44.675386"], ["updated_at", "2016-01-13 17:10:44.675386"]]
   (93.6ms)  commit transaction

我注意到'gigid'在这里被完全忽略了，但其他一切都保存得很好。我不明白为什么一个属性会保存而另一个属性没有，任何洞察都会非常感激！

Answer 1

您的表单没有gigid将其发送到create操作的任何内容。您可以在下面的表单中使用隐藏字段

<%= simple_form_for([@user, @user.reviews.build]) do |f| %>
  <div id="rating-form">
    <label>Rating</label>
  </div>
  <%= f.input :comment %>
  <%= f.input :gigid, :as => :hidden, :input_html => { :value => params[:gigid] }
  <%= f.button :submit %>
<% end %>

Answer 2

审核参数中没有gigid。在执行POST时仔细查看你的参数："review"=>{"rating"=>"5", "comment"=>"sdfsdfdd"}。只需查看和评论。在你做完之后：

params.require(:review).permit(:rating, :comment, :gigid, :user_id)

Rails 4.创建模型

2 个答案: