Question

我正在使用rails 4.我正在尝试使用ajax

创建动态form_tag

所以每次单击“Addsymbol”时，它会触发testpage.js.erb并添加一个新的输入字段（通过ajax呈现）

当单击“发送输入”时，它会触发testpage.html.erb，触发查询并返回将在屏幕上显示的结果

testpage.html.erb

<div id="ajaxsearchform">
<%=render 'searchform'%>
</div>
   ....code that will show @res on the browser, not important to this topic....

testpage.js.erb

$('#ajaxsearchform').html("<%=j(render('searchform'))%>");

_searchform.html.erb

<%= form_tag '/stinfos/testpage',remote:true do %>
    <%=submit_tag "Addsymbol",name:"addsymbol" %>
    .....code that handle how many input field to show up, not important to this topic....
    <%=submit_tag "Send input",name:"getresult" %></td>
<%end%>

控制器是这样的

  if(!params[:addsymbol].nil?)
          @numofsymbol+=1
  end

  if(!params[:getresult].nil?)
          request.format = :html
  end  

  ...code that will do the query and store result in instance variable @res...

  respond_to do |format|
                    format.js {render layout:'application';}
                    format.html {render layout:'application';}
            end

现在addsymbol工作正常，添加新的输入字段而不刷新整个页面

但是，当我点击“发送输入”时，会显示此

  Rendered stinfos/_searchform.html.erb (1.5ms)
  Stinfo Load (0.2ms)  SELECT `stinfos`.* FROM `stinfos`  WHERE (symbol='SVA' OR symbol='' OR         symbol='')
  Testdatum Load (0.1ms)  SELECT symbol,stdate,x52wk_high,x52wk_low FROM `testdata`  WHERE 

  (symbol='SVA' OR symbol='' OR symbol='')
  Rendered stinfos/_testshowall.html.erb (1.7ms)
  Rendered stinfos/testpage.html.erb within layouts/application (10.6ms)
  Rendered layouts/_footer.html.erb (0.1ms)
  Completed 200 OK in 1109ms (Views: 1094.7ms | ActiveRecord: 5.4ms)

您可以看到stinfos / testpage.html.erb已成功呈现（因为request.format =：html），但浏览器未显示存储在@res

中的查询结果

显示查询结果的唯一方法是---删除form_tag中的remote：true选项---同时保持

其他代码完全一样。在这种情况下，控制台说

Rendered stinfos/_searchform.html.erb (1.7ms)
Stinfo Load (0.2ms)  SELECT `stinfos`.* FROM `stinfos`  WHERE (symbol='SVA' OR symbol='' OR symbol='')
Testdatum Load (0.1ms)  SELECT symbol,stdate,x52wk_high,x52wk_low FROM `testdata`  WHERE (symbol='SVA' OR symbol='' OR symbol='')
Rendered stinfos/_testshowall.html.erb (1.9ms)
Rendered stinfos/testpage.html.erb within layouts/application (11.7ms)
Rendered layouts/_footer.html.erb (0.1ms)
Completed 200 OK in 1230ms (Views: 1121.6ms | ActiveRecord: 98.8ms)


Started GET "/assets/estimatechanges.css?body=1" for 66.216.227.139 at 2014-11-07 14:10:16 -0600


Started GET "/assets/custom.css?body=1" for 66.216.227.139 at 2014-11-07 14:10:16 -0600

.....

但是，这不会使用ajax函数，所以当点击addsymbol时屏幕会刷新

请注意，当remote：true启用时，“Started GET ...”行未显示

为什么在远程启用时，渲染的行为会有所不同？

是不是因为我错过了request.format =：html？

之外的任何重要代码

手动设置request.format后，rails render无法正常工作

0 个答案: