Using node and express to serve get(/foo/:bar) requests, when res.render(template), all relative links in template are relative to /foo instead of / - node.js

The offending route in my node server code is this:
app.get('/s/:searchTerm', function(req, res) {
res.render('index');
});
After this happens, all the relative links in index.jade are relative to "hostname/s/" instead of "hostname/", which is broken.
My node setup looks like this:
app.set('view engine', 'jade');
app.set('views', __dirname + '/views');
app.use(express.static(__dirname + '/public/'));
app.use(express.favicon(__dirname + '/public/img/favicon.ico'));
app.use(express.json());
app.use(app.router);
All of these routes, except for the /s/:searchTerm route, work. Even the /results route. There, the relative links in partials/result are relative to 'hostname' as I'd expect.
app.get('/', function(req, res) {
res.render('index');
});
app.get('/s/:searchTerm', function(req, res) {
res.render('index');
});
app.get('/results', function(req, res) {
res.render('partials/results');
});
index.jade simply references layout.jade:
extends layout
layout.jade begins like this:
!!! 5
html(lang='en' data-ng-app='FooApp')
head
meta(charset='utf-8')
meta(http-equiv='X-UA-Compatible', content='IE=edge')
meta(name='viewport', content='width=device-width, initial-scale=1.0')
meta(name='author', content='foo#gmail.com`')
link(rel='shortcut icon', href='img/favicon.ico')
title FooApp.com â„¢
// Bootstrap core CSS
link(href='//netdna.bootstrapcdn.com/bootstrap/3.0.2/css/bootstrap.min.css', rel='stylesheet')
// Custom css for this template
link(href='css/style.css', rel='stylesheet')
//if lt IE 9
script(src='https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js')
script(src='https://oss.maxcdn.com/libs/respond.js/1.3.0/respond.min.js')
body(data-ng-controller='SearchController'
.navbar.navbar-inverse.navbar-fixed-top(role='navigation')
.container
.navbar-header
button.navbar-toggle(type='button' data-target='.navbar-collapse'
How do I render a partial and keep links in that partial relative to 'hostname' ???
edit: added index.jade and layout.jade code
edit: ah, I see I'm doing something redundant with favicon

The behavior you are seeing is what is expected as hrefs are relative to the page that loads them. Since your /a/:searchTerm route is nested at /a, hrefs to static assets like img/favicon.ico will pick up their relative parent route. If you want the href to look in the root of your public directory for static assets, then prepend a / to the href like so: /img/favicon.ico

Related

hogan.js with master pages or layouts

Is it possible in any way to use hogan.js as template engine with layouts something like
"Razor or master pages in .NET"?
I would get a result like this:
layout.hjs:
contains "header" & "footer"
and
index.hjs:
will include layout.hjs and contain only page content.
sure:
layout.hjs:
{{> header}}
{{$content}}
default content
{{/content}}
{{> footer}}
index.hjs:
{{<layout}}
{{$content}}
your content goes here
{{/content}}
{{/layout}}
see the hogan test file for all it can do:
https://github.com/twitter/hogan.js/blob/master/test/index.js
btw. this is Hogan#3.0.0, get it with a git url with mpn
I'm not sure what you mean, "Razor or master pages in .NET"? What are you looking to do, use view partials?
But the basic way of setting up Hogan.js for Express is as follows:
var express = require('express');
var app = express();
app.set('views', __dirname + '/views');
app.set('view engine', 'hjs');
app.use(app.router);
app.use(express.static( __dirname + '/public' ));
app.get('/', function( req, res, next ) {
res.render('index');
});
app.listen(3000);
You will have to npm install express [--save], npm install hjs [--save], depending if it's inside your package.json already or not.
Then you just make a views directory and throw an index.hjs file and you're set.
Let me know what you want to do with your templates and we can work from there.

express + stylus + jade, nothing gets compiled

I cannot get this simple app.js to work: static files are served but jade and styl files are not compiled.
Here the __dirname ls:
damianomacbook:www damiano$ ls
app.jade app.js app.styl config.xml johnd.jpg
.jade and .styl files are served normally and plain.
Here what happens when curling css and html files (which the middlewares functions are supposed to generate on the fly):
damianomacbook:www damiano$ curl localhost:8080/app.css
curl: (52) Empty reply from server
damianomacbook:www damiano$ curl localhost:8080/app.html
Cannot GET /app.html
What's missing?
Guilty code:
var express = require('express');
var stylus = require('stylus');
var nib = require('nib');
var app = express();
function compile(str, path) {
return
stylus(str)
.set('filename', path)
.use(nib());
}
app.use(express.logger('dev'));
app.set('views', __dirname);
app.set('view engine', 'jade');
app.use(stylus.middleware({
src: __dirname,
compile: compile
}));
app.use(express.static(__dirname));
app.listen(8080);
Your GET /app.html is failing because serving HTML pages is done with the express router, not middleware, and you don't have any routes defined. The static middleware doesn't convert anything (thus the name), so it's not going to serve /app.html unless there's an actual app.html file on disk. To get /app.html working, add:
app.get('/app.html', function (req, res) { res.render('app');});
//or you probably want app.get('/', ...if you want this to be your home page
//you probably also don't want/need ".html" in your URLs as this has fallen out of style
Your stylus problem is the automatic semicolon insertion monster. You must not put the "return" keyword on a line by itself. Your compile function is returning undefined instead of a stylus instance. Keep the compile formatted as it is on the nib documentation and all is well.

Set CSS path for Jade layouts

I'd like to set my CSS path in my express application in order to use this one in my jade layouts. However, I don't know how to do, I try to use "app.set('cssPath', __dirname+'/public/admin/css/')" but it doesn't work because I can not use "app.get()" in my external controllers.
My layout _layout.jade :
!!! 5
html(lang='fr')
head
meta(charset='UTF-8')
link(href='admin/css/screen.css', media='screen, projection', rel='stylesheet', type='text/css')
body
.container
h1 Wellcome to Forest Administrator
.space20
block content
.clear.space20
script(type='text/javascript', src='admin/js/jquery.js')
My page edit.jade :
extends ../_layout
block content
.block.half.first
h2 Add a post
And I'd like to use something like :
link(href='+myCssPath+', media='screen, projection', rel='stylesheet', type='text/css')
Not sure if I get what you want to do but You can use
res.locals.cssPath = 'string with the path';
And cssPath will be available in your template.
Besides that you don't need __dirname+'/public/. Part because when the page is rendered for the browser /public/ will be /
[edit] If you want to have that variable available in all you routes, but declaring it just once, you can create a small middleware like
var express = require('express');
var app = express();
var app.configure(function(){
app.use(express.bodyParser());
app.use(express.methodOverride());
// .. and your other tipical configuration
//this small middleware for variables that must available in all paths
app.use(function(req, res, next) {
res.locals.cssPath = 'path to the css directory';
next();
});
});
//From here your typical route declarations
app.get('/', function(req, res) { res.render('someView'); });

Node.js + Express + Handlebars.js + partial views

I am trying to make a simple HelloWorld project with Node.js|Express using Handlebars.js as a server template engine.
The problem is that I couldn't find any examples of using such chain, especially with multiple view.
For example I would like to define header view:
<header>
<span>Hello: {{username}}</span>
</header>
And use it in every page with other views.
Maybe I am thinking about this views in a wrong way, I thought that view is kind of control that I can reuse on any page inside any other view.
I appreciate any link to the tutorial or (much better) open source project that I can lear from.
I know this had been asked a long time ago, but no one has shown an answer in this post. So I will do so here. To ensure everyone is on the same page, I will be verbose in my answer. I apologize in advance if it seems overly simplistic.
In your server.js file (or app.js, wherever you defined handlebars as your view engine). Depending on what you are using as your npm package, such as hbs or express-handlebars etc. it may look different, but similar to this. Note: I'm using express-handlebars in this example.
file: server.js
...
var express = require( 'express'),
hbs = require( 'express-handlebars' ),
app = express();
...
app.engine( 'hbs', hbs( {
extname: 'hbs',
defaultLayout: 'main',
layoutsDir: __dirname + '/views/layouts/',
partialsDir: __dirname + '/views/partials/'
} ) );
app.set( 'view engine', 'hbs' );
...
and your file structure should look something like this:
| /views/
|--- /layouts/
|----- main.hbs
|--- /partials/
|----- header.hbs
|----- footer.hbs
|----- ... etc.
|--- index.hbs
| server.js
And your main.hbs file should look like this:
file: main.hbs
...
{{> header }}
...
<span> various other stuff </span>
...
{{> footer }}
To denote a partial you use this syntax: {{> partialsNames }}.
Using https://www.npmjs.org/package/hbs | https://github.com/donpark/hbs
Let's assume you have:
+ views
- index.hbs
+ partials
- footer.hbs
You need to register which folder contains your partials:
hbs.registerPartials(__dirname + '/views/partials');
The partials will have the exact name that the file has. You can also register specific names for your partials by using:
hbs.registerPartial('myFooter', fs.readFileSync(__dirname + '/views/partials/footer.hbs', 'utf8'));
Then you access it like this:
First example: {{> footer }}
Second example: {{> myFooter }}
Full example here: https://github.com/donpark/hbs/tree/master/examples/partial
I'm currently using ericf's implementation of "handlebars-express", and find it to be excellent:
https://github.com/ericf/express3-handlebars
The key thing to remember is that on express, as opposed to the within the browser, handlebars gets activated during the view render phase. The client code will end up being just plain HTML, as if you'd used mustache within a PHP context.
You need to use partials.
See https://github.com/donpark/hbs/tree/master/examples/partial for a good example of using partials.
Here's another example http://blog.teamtreehouse.com/handlebars-js-part-2-partials-and-helpers
If your current directory is something like this then,
| /public/
| /views/
|--- /layouts/
|----- main.hbs
|--- /partials/
|----- header.hbs
|----- footer.hbs
|----- sidebar.hbs
|--- index.hbs
| app.js
Then the structure of app.js will be
const express = require('express');
const app = express();
const port = 3001;
const path = require('path');
const handlebars = require('express-handlebars');
app.use(express.static(path.join(__dirname, 'public')));
app.set('view engine', '.hbs');
app.engine('.hbs', handlebars({
layoutsDir: __dirname + '/public/views/layouts',
defaultLayout: 'main',
extname: 'hbs',
//for partial directory
partialsDir : __dirname+'/public/views/partials',
}));
app.set('views', path.join(__dirname, '/public/views'));
app.get('/', (req, res) => {
res.render('index');
});
app.listen(port, () => console.log(`App listening to port ${port}`));
Set the main.hbs as follows
const express = require('express');
{{> header}}
{{> sidebar}}
<p>Your Content(static) or you can use {{{body}}} </p>
{{> footer}}

Express Jade Layout Won't Render Even Though Layouts Is Set to True

I am new to Express for Node.js, and I was just setting up a simple app by following Pedro Teixeira's Node Tuts Episode 9. I wanted to experiment with layout files, so I set the layout to be "true." When I did that though, it didn't render with my layout, only with my body. How should I get it to render correctly? Below is my app.js file, my index.jade, my layout.jade, and a screenshot of my rendered page.
app.js
var express = require('express');
var app = express.createServer();
app.configure(function () {
app.use(express.logger();
});
app.set('views', __dirname + '/views');
app.set('view engine','jade');
app.set('view options', {layout: true});
app.get('/', function(request, response) {
response.render('index');
});
app.listen(4000);
index.jade
h2 Hello
p World!
layout.jade
!!! 5
html
head
title My template
body
#main
h1 Content goes here
p Testing 123
#container!= body
If you are using Express 3 this is normal the way template are rendered has changed.
Your layout needs to be like this:
!!! 5
html
head
title My template
body
#main
h1 Content goes here
p Testing 123
block content
And you templates:
extends layout
block content
h1 Something
Examples here:
https://github.com/dotcloud/express-on-dotcloud/blob/master/app/views/layout.jade#L64
https://github.com/dotcloud/express-on-dotcloud/blob/master/app/views/welcome.jade#L1
If you are starting with Node and Express feel free to clone this demo/tutorial App:
https://github.com/dotcloud/express-on-dotcloud
You can fool with it localy and discover some nice features of Express 3, if you want to share your app it is all setup to be pushed to dotCloud.

Resources