Question

可能重复：
Rails - AJAX to for new/create action

我有一个时间轴，其上有部分事件，因此您可以直接在时间轴上进行CRUD事件。我已经让删除部分工作正常，因此每次删除事件时都会刷新删除部分和时间线。但是，在创建新事件时，我无法使其正常工作。整个页面刷新，而不是刷新表单和时间线。

我认为这与控制器有关？但我似乎无法解决它。任何帮助将不胜感激，谢谢：0）

事件控制器：

def create
    @event = Event.new(params[:event])

    respond_to do |format|
      if @event.save
        format.html { redirect_to @event.timeline, notice: 'Event was successfully created.' }
        format.json { render json: @event, status: :created, location: @event }
        format.js 
      else
        format.html { render action: "new" }
        format.json { render json: @event.errors, status: :unprocessable_entity }
        format.js 
      end
    end
  end

时间轴/显示：

<div id="new-event">
        <%= render :partial => "new_event", :locals => { :event => Event.new(:timeline_id=>@timeline.id) }, :remote => true %>
    </div>

时间轴/ _new_event：

<br />
<h2>Add an event</h2>
<h4>Fill in the form and click 'Create Event' to add a new event to the timeline.</h4>

<%= form_for(event) do |f| %>
  <% if event.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(event.errors.count, "error") %> prohibited this event from being saved:</h2>

      <ul>
      <% event.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <%=f.hidden_field 'timeline_id', :value => current_user.timeline.id %>
  <div class="field">
    <%= f.label :date %><br />
    <%= f.date_select :start_date, :order => [:day, :month, :year], :start_year => 1800 %>
  </div>
  <div class="field">
    <%= f.label :title %><br />
    <%= f.text_field :headline, :size => 50 %>
  </div>
  <div class="field">
    <%= f.label :event_description %><br />
    <%= f.text_area :text, :size => "47x4" %>
  </div>
  <%= check_box_tag "blockCheck", :value => "1", :checked => false %>
  <div class="field" id="media_box">
    <%= f.label :media %>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>Please paste a URL here</span><br />
    <%= f.text_field :media, :size => 50 %>
  </div>
  <div class="field">
    <%= f.label :media_description %><br />
    <%= f.text_area :caption, :size => "47x3" %>
  </div>
  <div class="actions">
    <%= f.submit 'Create Event', :class => "btn btn-success", :remote => true  %>
  </div>
<% end %>

事件/ create.js.erb：

$('#new-event').html('<%= escape_javascript( render :partial => "/timelines/new_event", :locals => { :event => Event.new(:timeline_id=>@timeline.id) } ) %>');
$('.notice').html("<p>Event was successfully created.</p>");
$('.notice').show(300);
$('#my-timeline-box').html('<%= escape_javascript( render :partial => "/timelines/my_timeline" ) %>');
$('#show-timeline').html('<%= escape_javascript( render :partial => "/timelines/show_timeline" ) %>');

（最后两行是刷新时间轴）。

更新：

以下是错误消息：

Started POST "/events" for 127.0.0.1 at 2012-10-16 14:52:37 +0100
Processing by EventsController#create as JS
  Parameters: {"utf8"=>"V", "authenticity_token"=>"i8oiRI7rOLsfb5o45QCK0te/hAsWv
BMTqpxU9KrbmNA=", "event"=>{"timeline_id"=>"1", "start_date(3i)"=>"16", "start_d
ate(2i)"=>"10", "start_date(1i)"=>"2012", "headline"=>"", "text"=>"", "media"=>"
", "caption"=>""}, "commit"=>"Create Event"}
  ←[1m←[35m (0.0ms)←[0m  begin transaction
  ←[1m←[36mSQL (5.0ms)←[0m  ←[1mINSERT INTO "events" ("caption", "created_at", "
credit", "end_date", "headline", "media", "start_date", "text", "thumbnail", "ti
meline_id", "updated_at") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)←[0m  [["capti
on", ""], ["created_at", Tue, 16 Oct 2012 13:52:37 UTC +00:00], ["credit", nil],
 ["end_date", nil], ["headline", ""], ["media", ""], ["start_date", Tue, 16 Oct
2012], ["text", ""], ["thumbnail", nil], ["timeline_id", 1], ["updated_at", Tue,
 16 Oct 2012 13:52:37 UTC +00:00]]
  ←[1m←[35m (88.0ms)←[0m  commit transaction
  Rendered events/create.js.erb (99.0ms)
Completed 500 Internal Server Error in 617ms

ActionView::Template::Error (Called id for nil, which would mistakenly be 4 -- i
f you really wanted the id of nil, use object_id):
    1: $('#new-event').html('<%= escape_javascript( render :partial => "/timelin
es/new_event", :locals => { :event => Event.new(:timeline_id=>@timeline.id) } )
%>');
    2: $('.notice').html("<p>Event was successfully created.</p>");
    3: $('.notice').show(300);
    4: $('#my-timeline-box').html('<%= escape_javascript( render :partial => "/t
imelines/my_timeline" ) %>');
  app/views/events/create.js.erb:1:in `_app_views_events_create_js_erb___8626901
43_20024148'
  app/controllers/events_controller.rb:59:in `create'


  Rendered C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.4.rc1/lib/action_d
ispatch/middleware/templates/rescues/_trace.erb (5.0ms)
  Rendered C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.4.rc1/lib/action_d
ispatch/middleware/templates/rescues/_request_and_response.erb (2.0ms)
  Rendered C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.4.rc1/lib/action_d
ispatch/middleware/templates/rescues/template_error.erb within rescues/layout (1
000.1ms)

Answer 1

您在提交按钮上有:remote => true。那是不对的。它应该在表格上：

<%= form_for(event, :remote => true) do |f| %>

Answer 2

您尚未在控制器代码中初始化@timeline。因此，你得到一个零行动。

所以，请输入您的创建代码：

@timeline = current_user.timeline

Rails - 使用AJAX时刷新页面而不是部分页面

2 个答案: