我有多個MySQL查詢結果,其中我將第一個渲染並將剩餘的對象作爲對象作爲單個EJS文件(/ data)進行調用。Node.js - 將多個對象傳遞給相同的EJS文件
我僅渲染第一查詢結果(OBJ),然後我做出了EJS其餘贖回(rsum_total_sales & rsum_count_active)
看來,我第一次加載EJS文件我得到前端500錯誤,如
rsum_total_sales is not defined
但是當我重新加載瀏覽器時,我得到EJS的loa很好,顯示從路線文件中獲得的所有需要的結果。
奇怪的是,即使是第一次,在console.log()我看到,所有三個查詢結果已放入我所做的對象中,但它們還不能被調用到EJS,除了第一個直接呈現的到它。
從EJS的錯誤,我可以看到,它通過其呈現的第一connection.query結果(OBJ),而不是其餘2個(rsum_total_sales & sum_count_active),我只是讓他們的對象調用的,直到我重新加載瀏覽器。
路由文件
var obj = {};
var qsum_total_sales = 'SELECT SUM (total_price) AS s_total_price FROM myrecords';
var qsum_count_active = 'SELECT COUNT (*) AS s_count_active FROM myrecords WHERE NOT status = "canceled" ';
var qdata = 'SELECT * FROM myrecords';
router.get('/data', function(req, res){
connection.query(qdata, function(err, result) {
if(err){
throw err;
} else {
obj = {print: result};
res.render('data', obj);
console.log(obj);
}
});
connection.query(qsum_total_sales, function(err, rows, result) {
if(err){
throw err;
} else {
rsum_total_sales = JSON.parse(rows[0].s_total_price).toFixed(2);
console.log(rsum_total_sales);
//First time prints result but it can't be called to EJS until reloading EJS
}
});
connection.query(qsum_count_active, function(err, rows, result) {
if(err){
throw err;
} else {
rsum_count_active = JSON.parse(rows[0].s_count_active);
console.log(rsum_count_active);
//First time prints result but it can't be called to EJS until reloading EJS
}
});
});
EJS文件
<tbody>
<% print.forEach(function (datatable) { %>
<tr>
<td><%= datatable.id %></td
<td><%= datatable.full_name %></td>
//rest of loop
</tr>
<% }) %>
</tbody>
// some html code
<h4>Total sales sum is: <%- rsum_total_sales %></h4>
<h4>Total active records are: <%- rsum_count_active %></h4>
前端錯誤(只有當它是第一時間EJS加載到瀏覽器)
ReferenceError: C:\NodeJS\CRUD-1\views\data.ejs:39
37| </table>
38| <hr/>
>> 39| <h4>Total sales sum is: <%- rsum_total_sales %></h4>
40| <h4>Total active records are: <%- rsum_count_active %></h4>
rsum_total_sales is not defined
at eval (eval at <anonymous> (C:\NodeJS\CRUD-1\node_modules\ejs\lib\ejs.js:481:12),
<anonymous>:47:17)
at returnedFn (C:\NodeJS\CRUD-1\node_modules\ejs\lib\ejs.js:512:17)
at View.exports.renderFile [as engine] (C:\NodeJS\CRUD- 1\node_modules\ejs\lib\ejs.js:364:31)
at View.render (C:\NodeJS\CRUD-1\node_modules\express\lib\view.js:126:8)
at tryRender (C:\NodeJS\CRUD-1\node_modules\express\lib\application.js:639:10)
at EventEmitter.render (C:\NodeJS\CRUD-1\node_modules\express\lib\application.js:591:3)
at ServerResponse.render (C:\NodeJS\CRUD-1\node_modules\express\lib\response.js:960:7)
at Query._callback (C:\NodeJS\CRUD-1\routes\data.js:36:17)
at Query.Sequence.end (C:\NodeJS\CRUD-1\node_modules\mysql\lib\protocol\sequences\Sequence.js:86:24)
at Query._handleFinalResultPacket (C:\NodeJS\CRUD-1\node_modules\mysql\lib\protocol\sequences\Query.js:144:8)
我沒有看到你在哪裏發送'rsum_total_sales'和'rsum_count_active'到前端。 –