在Rails中使用simple_form和AJAX解析JSON错误 [英] Parsing JSON errors using simple_form and AJAX in rails

问题描述

我有一个在用户仪表板上使用简单表单"和remote => true的表单(由仪表板视图和仪表板控制器处理).该表格允许用户添加自定义游戏规则；但是，它是通过Jquery的.load()函数加载表单的.表单是从规则"视图(由规则控制器处理)加载的.

I have a form that is using Simple Forms and remote => true on the users dashboard (which is handled by a dashboard view and dashboard controller). The form allows a user to add a custom game rule; however, it's loading the form via a Jquery's .load() function. The form is loading from the "rules" view (handled by a rules controller).

当用户单击提交"按钮时，我没有得到任何错误验证.

When the user clicks the submit button, I'm not getting any error validation.

这是规则控制器上的create动作:

Her is the create action on the rule controller:

def create
  @rule = Rule.new(params[:rule])

  respond_to do |format|
    if @rule.save
      format.html { redirect_to dashboard_path, notice: 'Rule was successfully created.' }
      format.json { render json: @rule, status: :created, location: @rule }
      format.js
    else
      format.html { render template: 'dashboard/index'}
      format.json { render json: @rule.errors, status: :unprocessable_entity }
      format.js
    end
  end
end

我的views文件夹中有一个名为create.js.erb的js文件，该文件当前为空.我认为我必须以某种方式解析此create.js.erb文件中的JSON错误数据，但是我不知道该怎么做.

I've got a js file called create.js.erb in my views folder that is currently empty. I think that I have to somehow parse the JSON error data in this create.js.erb file, but I have no idea how to do it.

此外，仪表板视图/控制器正在调用此表单，但是规则控制器正在处理该表单吗?

Also, does it matter that this form is being called by the Dashboard view/controller but the form is being handled by the Rule controller?

推荐答案

在create.js.erb中尝试以下操作

Try the following inside create.js.erb

$('.error-messages').remove();
<% if @rule.errors.any? %>
  $('body').append('<ul class="error-messages"></ul>');
  <% @rule.errors.full_messages.each do |msg| %>
    $('.error-messages').append('<%= escape_javascript msg %>');
  <% end %>
<% end %>

这会将错误附加在您的body标签中.

This will append the errors in your body tag.

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