I am trying to loop through an array of objects that I got from an http call using to my internal API using the request
module/package. So far, I am able to get my data back from the API and DISPLAY the full object on my page. I would like to display it on my page and loop through it using the EJS templating system. I know I can use AngularJS for frontend stuff, but I would like to see how far I can go with only server-side.
Below is my code:
server.js
// Prepend /api to my apiRoutes
app.use('/api', require('./app/api'));
api.js
var Report = require('./models/report');
var express = require('express');
var apiRoutes = express.Router();
apiRoutes.route('/reports', isLoggedIn)
.get(function (req, res,next) {
// use mongoose to get all reports in the database
Report.find(function (err, reports) {
// if there is an error retrieving, send the error.
// nothing after res.send(err) will execute
if (err)
return res.send(err);
res.json(reports);
});
});
routes.js
var User = require('./models/user');
var request = require('request');
module.exports = function (app, passport) {
app.get('/reports', isLoggedIn, function (req, res) {
res.render('pages/new-report.ejs', {
user: req.user,
title:'New Report'
});
});
request({
uri:'http://localhost:2016/api/reports',
method:'GET'
}).on('data',function(data){
console.log('decoded chunk:' + data)
}).on('response',function(resp){
resp.on('data', function(data){
console.log('received:' + data.length + ' bytes of compressed data');
app.get('/timeline', isLoggedIn, function (req, res) {
res.render('pages/timeline', {
user: req.user,
title:'Timeline',
reports: data
});
});
})
});
}
reports.ejs
So if I simply output the entire reports
object like this <p><%= reports %></p>
on my page, everything works fine and I get something like this:
[
{
"_id": "5775d396077082280df0fbb1",
"author": "57582911a2761f9c77f15528",
"dateTime": "30 June 2016 - 07:18 PM",
"picture": "",
"description": "",
"location": [
-122.46596999999997,
37.784495
],
"latitude": 37.784495,
"longitude": -122.46596999999997,
"address": "4529 California St, San Francisco, CA 94118, USA",
"contact": "John Doe",
"type": "Financial",
"__v": 0,
"updated_at": "2016-07-01T02:21:10.259Z",
"created_at": "2016-07-01T02:21:10.237Z",
"tags": [
"tag1,tag2"
]
}
]
But if I try to loop through the object as seen below It get an UNDEFINED as a return property of my report object and I get an infinite loop apparently.
<ul class="timeline">
<% reports.forEach(function(report) { %>
<li class="timeline-yellow">
<div class="timeline-time">
<span class="date" style="text-align:left">
<%= report.type %> </span>
<span class="time" style="font-weight:700;font-size:25px;line-height:20px;text-align:left;">
<%= report.dateTime %> </span>
</div>
</li>
<% }) %>
</ul>
I have tried another variation of the loop but I am still unsuccessful:
<ul class="timeline">
<% for (var i = 0; i < reports.length; i++) { %>
<li class="timeline-yellow">
<div class="timeline-time">
<span class="date" style="text-align:left">
<%= report[i].type %>
4/10/13 </span>
<span class="time" style="font-weight:700;font-size:25px;line-height:20px;text-align:left;">
<%= report[i].dateTime %> </span>
</div>
</li>
<% } %>
</ul>
We use forEach on the array to start a loop and enclose the entire opening in – . The template engine begins the loop and will include the next line, outside of any EJS tags, once for each element in the array, thereby adding 3 li s to our final HTML.
How to Loop Through an Array with a forEach Loop in JavaScript. The array method forEach() loop's through any array, executing a provided function once for each array element in ascending index order. This function is known as a callback function.
Steps to run the program:After creating all the files go to the root directory of your project folder. Run command prompt in this directory. Type node file_name. js command to run your program and see the output as displayed.
The syntax for the for
loop in ejs
is perfect but the iterated array name is reports and you seem to use report[i] inside the iteration, which needs to be changed as reports[i], which should work.
reports.ejs
<ul class="timeline">
<% for (var i = 0; i < reports.length; i++) { %>
<li class="timeline-yellow">
<div class="timeline-time">
<span class="date" style="text-align:left">
<%= reports[i].type %>
4/10/13 </span>
<span class="time" style="font-weight:700;font-size:25px;line-height:20px;text-align:left;">
<%= reports[i].dateTime %> </span>
</div>
</li>
<% } %>
</ul>
Hope this helps.
I guess something like this ..
<% if (reports.length > 0){%> // Checking if there are reports
<ul class="timeline">
<% for (let report of reports){ %>
<li class="timeline-yellow">
<div class="timeline-time">
<span class="date" style="text-align:left">
<%= report.type %>
4/10/13 </span>
<span class="time" style="font-weight:700;font-size:25px;line-
height:20px;text-align:left;">
<%= report.dateTime %> </span>
</div>
</li>
<% } %>
</ul>
<%}%>
<%}%>
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