Meteor and Iron Router: raise 404 when id doesn't exist - meteor

Question

I'm using Iron Router for my urls and I have this route:
this.route('regionEdit', {
path: '/region/:_id',
waitOn: function() {
return Meteor.subscribe('region', this.params._id);
},
data: function() {
return Regions.findOne({
_id: this.params._id
});
}
});
This works fine when I use this path http://example.com/region/xgok3Etc5mfhtmD7j
Where xgok3Etc5mfhtmD7j is the _id of region. However, when I access to http://example.com/region/whatever, the page renders normally, but without data.
How can I raise a 404 error for this?

Answer 1

not a 404, but you can render a not found page by doing something like this.
this.route('regionEdit', {
path: '/region/:_id',
waitOn: function() {
return Meteor.subscribe('region', this.params._id);
},
data: function() {
var region = Regions.findOne({
_id: this.params._id
});
if(!region)
this.render("notFound");
else
return region;
}
});

Answer 2

I think you can try Plugins
According to this documentation there is already a built in plugin for this issue
Router.plugin('dataNotFound', {notFoundTemplate: 'notFound'});
And it is described as
This out-of-box plugin will automatically render the template named "notFound" if the route's data is falsey

Answer 3

In router.js
Router.configure({
layoutTemplate:'layout',
notFoundTemplate: 'notFound'
});
Configure your router this way to solve the issue
and Template Part
<template name="notFound">
<div class="container">
<h1 class="colorWhite">Oopss..ss..ss..</h1>
<p class="colorWhite">You are out of the world, let's go back</p>
</div>
</template>
make it like this.. it should work, in fact, it works for me..

Answer 4

I include a catch all route on my Router.map:
router.js
Router.map(function() {
... // other routes
this.route('404', {
path: '/*',
layoutTemplate: 'application', // this actually lives in Router.configure();
template: 'pageNotFound',
onBeforeAction: function(){
console.log('not found');
}
});
});
templates.html
<template name="pageNotFound">
<div>
<h2>404 - page not found</h2>
</div>
</template>
<template name="application">
<div>
<h1>My Application</h1>
{{> yield}}
</div>
</template>
This pageNotFound template then gets rendered in the {{> yeild}} partial of the application template if none of the other routes pick up the uri path.