Question

我刚刚开始使用webdev和Express，并对流程感到困惑。

在我的app.js：

中

// RESTful routes for the home object.
app.get('/home', homeController.index);
app.get('/home/languages/:id', homeController.languages);

在我的home.js路线中：

var _ = require('underscore');

// Display all users.
exports.index = function(req, res) {
    Parse.Cloud.run('getAllUsers', {}, {
      success: function(result) {

            console.log("result = " + result);

            res.render('home/index', {
              users: result
            });
      },
      error: function(error) {
          }
    });
};


// Display all the available languages
exports.languages = function(req, res) {
    Parse.Cloud.run('getAllLanguages', {}, {
      success: function(result) {

            res.render('home/languages', {
              languages: result
            });
      },
      error: function(error) {
          }
    });
};

最后，HTML我试图用Language对象显示下拉列表：

  <div class="page-header" id="languages">
                <div class="dropdown">
                  <a href="#" class="dropdown-toggle" data-toggle="dropdown">Choose Language</a>
                  <b class="caret"></b>
                   <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">

                         <% languages.forEach(function(language) { %>    
                          <li><a href="<%= '/languages/' + language.id %>"><%= language.get("name") %></a></li>   
                        <% }) %>     

                    </ul>
                  </ul>
                </div>
    </div>

我能够获取用户并显示它们 - 我没有包含该部分的HTML。但是，我没有正确路由GET语言请求，因为我收到以下错误：

ReferenceError: cloud/views/home/index.ejs:17
    15|                        <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
    16| 
 >> 17|                              <% languages.forEach(function(language) { %>    
    18|                               <li><a href="<%= '/languages/' + language.id %>"><%= language.get("name") %></a></li>   
    19|                             <% }) %>     
    20|                            

languages is not defined
    at eval (eval at <anonymous> (ejs.js:256:12), <anonymous>:33:448)
    at ejs.js:261:15
    at Object.exports.render (ejs.js:299:13)
    at View.exports.renderFile [as engine] (ejs.js:325:22)
    at View.render (express_view.js:77:8)
    at Function.app.render (express_application.js:516:10)
    at res.render (express_response.js:763:7)
    at Parse.Cloud.run.success (controllers/home.js:10:10)
    at Parse.js:2:4591
    at r (Parse.js:2:3909)

修改

这是第二个版本，可以在languages查询的回调中查询users。

exports.index = function(req, res) {

    console.log("users first");

    Parse.Cloud.run('getAllUsers', {}, {
      success: function(users) {


            Parse.Cloud.run('getAllLanguages', {}, {
              success: function(languages) {

                    res.render('home/index', {
                      languages: languages,
                      users: users
                    });
              },
              error: function(error) {
                  }
            });

      },
      error: function(error) {
          }
    });


};

快速路由基础知识

0 个答案: