如何在HTML模板中呈现Node JS数据? [英] How to render node js data in html template?
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问题描述
我无法在html模板中呈现数据，但是当我使用express然后插入但文件格式为ejs时.但我需要以html形式列出我的数据，而无须快递.该怎么做?
I am unable to render data in html template but when I use express then inserted but file format is ejs . but I need listing my data in html without express. How to do that?
这是我的server.js文件，在此文件数据库连接中，具有插入记录，选择记录和编辑记录查询的功能.请在这里查看我的代码是sjs模板.
This is my server.js file here I have in this file database connection, insert record, select record and edit record query. Please see my code here is sjs templates.
注意:问题出在这里是ejs模板，但我想以.html格式文件而不是.ejs格式呈现我的nodejs代码.
Note: the problem is here is ejs templates but I want to render my nodejs code in .html format file not .ejs format.
server.js
server.js
var express = require('express'),
path = require('path'),
bodyParser = require('body-parser'),
emailExistence = require('email-existence'),
app = express(),
expressValidator = require('express-validator');
/*Set EJS template Engine*/
app.set('views','./views');
app.set('view engine','ejs');
app.use(express.static(path.join(__dirname, 'public')));
app.use(bodyParser.urlencoded({ extended: true })); //support x-www-form-urlencoded
app.use(bodyParser.json());
app.use(expressValidator());
/*MySql connection*/
var connection = require('express-myconnection'),
mysql = require('mysql');
app.use(
connection(mysql,{
host : 'localhost',
user : 'root',
password : '',
database : 'mydb',
debug : false //set true if you wanna see debug logger
},'request')
);
app.get('/',function(req,res){
res.send('Welcome');
});
//RESTful route
var router = express.Router();
/*------------------------------------------------------
* This is router middleware,invoked everytime
* we hit url /api and anything after /api
* like /api/user , /api/user/7
* we can use this for doing validation,authetication
* for every route started with /api
--------------------------------------------------------*/
router.use(function(req, res, next) {
console.log(req.method, req.url);
next();
});
var curut = router.route('/user');
//show the CRUD interface | GET
curut.get(function(req,res,next){
req.getConnection(function(err,conn){
if (err) return next("Cannot Connect");
var query = conn.query('SELECT * FROM t_user',function(err,rows){
if(err){
console.log(err);
return next("Mysql error, check your query");
}
res.render('user',{title:"RESTful Crud Example",data:rows});
});
});
});
//post data to DB | POST
curut.post(function(req,res,next){
//validation
req.assert('name','Name is required').notEmpty();
req.assert('email','A valid email is required').isEmail();
req.assert('password','Enter a password 6 - 20').len(6,20);
var errors = req.validationErrors();
if(errors){
res.status(422).json(errors);
return;
}
//get data
var data = {
name:req.body.name,
email:req.body.email,
password:req.body.password
};
//inserting into mysql
req.getConnection(function (err, conn){
if (err) return next("Cannot Connect");
var query = conn.query("INSERT INTO t_user set ? ",data, function(err, rows){
if(err){
console.log(err);
return next("Mysql error, check your query");
}
res.sendStatus(200);
});
});
});
//now for Single route (GET,DELETE,PUT)
var curut2 = router.route('/user/:user_id');
/*------------------------------------------------------
route.all is extremely useful. you can use it to do
stuffs for specific routes. for example you need to do
a validation everytime route /api/user/:user_id it hit.
remove curut2.all() if you dont want it
------------------------------------------------------*/
curut2.all(function(req,res,next){
console.log("You need to smth about curut2 Route ? Do it here");
console.log(req.params);
next();
});
//get data to update
curut2.get(function(req,res,next){
var user_id = req.params.user_id;
req.getConnection(function(err,conn){
if (err) return next("Cannot Connect");
var query = conn.query("SELECT * FROM t_user WHERE user_id = ? ",[user_id],function(err,rows){
if(err){
console.log(err);
return next("Mysql error, check your query");
}
//if user not found
if(rows.length < 1)
return res.send("User Not found");
res.render('edit',{title:"Edit user",data:rows});
});
});
});
//update data
curut2.put(function(req,res,next){
var user_id = req.params.user_id;
//validation
req.assert('name','Name is required').notEmpty();
req.assert('email','A valid email is required').isEmail();
req.assert('password','Enter a password 6 - 20').len(6,20);
var errors = req.validationErrors();
if(errors){
res.status(422).json(errors);
return;
}
//get data
var data = {
name:req.body.name,
email:req.body.email,
password:req.body.password
};
//inserting into mysql
req.getConnection(function (err, conn){
if (err) return next("Cannot Connect");
var query = conn.query("UPDATE t_user set ? WHERE user_id = ? ",[data,user_id], function(err, rows){
if(err){
console.log(err);
return next("Mysql error, check your query");
}
res.sendStatus(200);
});
});
});
//delete data
curut2.delete(function(req,res,next){
var user_id = req.params.user_id;
req.getConnection(function (err, conn) {
if (err) return next("Cannot Connect");
var query = conn.query("DELETE FROM t_user WHERE user_id = ? ",[user_id], function(err, rows){
if(err){
console.log(err);
return next("Mysql error, check your query");
}
res.sendStatus(200);
});
//console.log(query.sql);
});
});
//now we need to apply our router here
app.use('/api', router);
//start Server
var server = app.listen(4000,function(){
console.log("Listening to port %s",server.address().port);
});
user.ejs 这是我的ejs视图模板文件
user.ejs This is my ejs view template files
<!DOCTYPE html>
<html>
<head>
<title><%=title%></title>
<script type="text/javascript" src="/../js/jquery-1.10.2.min.js"></script>
<script type="text/javascript" src="/../js/all.js"></script>
<link rel="stylesheet" href="/../css/style.css">
</head>
<body>
<div class="data-table">
<table border="1" cellpadding="7" cellspacing="7">
<tr>
<th width="50px">No</th>
<th>Name</th>
<th>Email</th>
<th>Password</th>
<th>Action</th>
</tr>
<% if(data.length){
for(var i = 0;i < data.length;i++) { %>
<tr>
<td><%=(i+1)%></td>
<td><%=data[i].name%></td>
<td><%=data[i].email%></td>
<td><%=data[i].password%></td>
<td>
<a class="a-inside edit" href="/api/user/<%=data[i].user_id%>">Edit</a>
<a class="a-inside delete" href="javascript:void(0)" onClick="deleteUser(<%=data[i].user_id%>)">Delete</a>
</td>
</tr>
<% }
}else{ %>
<tr>
<td colspan="5">No Data</td>
</tr>
<% } %>
</table>
</div>
<div class="page-data">
<form method="post" action="" id="the-form">
<table cellpadding="11">
<tr>
<td class="label">Name</td><td>: <input type="text" name="name"></td>
</tr>
<tr>
<td class="label">Email</td><td>: <input type="text" name="email"></td>
</tr>
<tr>
<td class="label">Password</td><td>: <input type="password" name="password"></td>
</tr>
<tr>
<td class="label"></td>
<td>
<input type="button" value="Save" onClick="saveUser()">
</td>
</tr>
</table>
</form>
</div>
<div class="page-data">
<ul class="err-area"></ul>
</div>
<script>
function saveUser(){
$.ajax({
url:"/api/user",
type:"post",
data:$("#the-form").serialize(),
success:function(res){
window.location.reload();
return false;
},
error:function(xhr, status, error){
console.log(xhr.responseText);
var err = '';
$.each(JSON.parse(xhr.responseText) , function(i, item) {
err +='<li>'+item.msg+'</li>';
});
$(".err-area").html(err);
return false;
}
});
}
function deleteUser(user_id){
$.ajax({
url:"/api/user/"+user_id,
type: 'DELETE',
success: function(res) {
window.location.reload();
return false;
},
error:function(xhr, status, error){
console.log(xhr.responseText);
alert("Error deleting");
return false;
}
});
}
</script>
</body>
</html>
推荐答案
您所需要做的就是res.render("path to ejs file", {variables...})将ejs模板转换为HTML响应.
All you need is res.render("path to ejs file", {variables...}) to convert the ejs template to HTML response.
app.set('views','./views');
app.set('view engine','ejs');
这部分负责呈现HTML.
This part takes care of the rendering HTML.
这篇关于如何在HTML模板中呈现Node JS数据?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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