Routing in Symfony2 - php

How to setup default routing in Symfony2?
In Symfony1 it looked something like this:
homepage:
url: /
param: { module: default, action: index }
default_symfony:
url: /symfony/:action/...
param: { module: default }
default_index:
url: /:module
param: { action: index }
default:
url: /:module/:action/...

I was looking through the cookbook for an answer to this, and think I've found it here. By default, all route parameters have a hidden requirement that they match any character except the / character ([^/]+), but this behaviour can be overridden with the requirements keyword, by forcing it to match any character.
The following should create a default route that catches all others - and as such, should come last in your routing config, as any following routes will never match. To ensure it matches "/" as well, a default value for the url parameter is included.
default_route:
pattern: /{url}
defaults: { _controller: AcmeBundle:Default:index, url: "index" }
requirements:
url: ".+"

I don't think it's possible with the standard routing component.
Take a look to this bundle, it might help :
https://github.com/hidenorigoto/DefaultRouteBundle

// Symfony2 PR10
in routing.yml:
default:
pattern: /{_controller}
It enables you to use this kind of urls: http://localhost/MySuperBundle:MyController:myview

Symfony2 standard routing component does not support it, but this bundle fills the gap Symfony1 left:
https://github.com/LeaseWeb/LswDefaultRoutingBundle
It does what you expect. You can default route a bundle using this syntax:
FosUserBundle:
resource: "#FosUserBundle"
prefix: /
type: default
It scans your bundle and automatically adds routes to your router table that you can debug by executing:
app/console router:debug
Example of automatically added default routes:
[router] Current routes
Name Method Pattern
fos_user.user.login_check ANY /user/login_check.{_format}
fos_user.user.logout ANY /user/logout.{_format}
fos_user.user.login ANY /user/login.{_format}
...
You see that it also supports the automatic "format" selection by using a file extension (html, json or xml).

Here is an example: http://docs.symfony-reloaded.org/master/quick_tour/the_big_picture.html#routing
A route definition has only one mandatory parameter pattern and three optionals parameters defaults, requirements and options.
Here's a route from my own project:
video:
pattern: /watch/{id}/{slug}
defaults: { _controller: SiteBundle:Video:watch }
requirements: { id: "\d+", slug: "[\w-]+"

Alternatively, you can use #Route annotation directly in a controller file. see https://github.com/sensio/SensioFrameworkExtraBundle/blob/master/Resources/doc/annotations/routing.rst
As for the default routes, I think Symfony2 encourages explicit route mapping.

Create a default route is not a good way of programming. Why? Because for this reason was implemented Exception.
Symfony2 is built just to do right things in the right way.
If you want to redirect all "not found" routes you should use exception, like NotFound404 or something similar. You can even customise this page at your own.
One route is for one purpose. Always. Other think is bad.

You could create your own bundle that handled all requests and used URL parameters to construct a string to pass to the controller's forward method. But that's pretty crappy, I'd go with well defined routes, it keeps your URLs cleaner, and decouples the URL and controller names. If you rename a bundle or something, do you then have to refactor your URLs?

If you want to create a "catch all", your best bet would be to hook on the KernelEvents::EXCEPTION event. This event gets triggered whenever an Exception falls through to the HttpKernel, this includes the NotFoundHttpException thrown when the router cannot resolve a route to a Controller.
The effect would be similar to Symfony's stylized 404 page that gets rendered when you send the request through app_dev.php. Instead of returning a 404, you perform whatever logic you're looking to.

It depends... Some of mine look like this:
api_email:
resource: "#MApiBundle/Resources/config/routing_email.yml"
prefix: /
and some look like
api_images:
path: /images/{listingId}/{width}/{fileName}
defaults: { _controller: ApiBundle:Image:view, listingId: null, width: null, fileName: null }
methods: [GET]
requirements:
fileName: .+

Related

Is it possible to construct a Symfony path using only parameters?

I would like to reduce the number of repetitive code and give a canonical URL in my Drupal 8 application. Since the routing system is built on Symfony, I included it in the title.
I am constructing paths under routes in my mymodule.routing.yml file. I want to match a specified number of different strings in the first argument, and a slug which can be any string in the second argument. It looks like this:
entity.my_entity.canonical:
path: '/{type}/{slug}'
defaults:
_controller: '\namespace\PostController::show'
requirements:
_permission: 'perm'
type: different|strings|that|can|match|
Now, when I try to access using for example /match/some-slug then it just says "Page not found".
If I something static to the path, for example path: '/j/{type}/{slug}', then it works as expected when I open /j/match/some-slug in the browser.
My boss doesn't like any unnecessary characters in the URL though, so I would like to achieve this by using two parameters, like shown in the first example.
As Yonel mentioned in the comments you can use debug:router to check all your routes. I don't see anything wrong with your code.
Try running bin/console router:match "/match/blaaa" and if you see some controller that isn't the one you want then you'll need to change the route. It shouldn't be the case though because you're getting a 404.
Here's my exact setup that works
routing.yml:
entity.my_entity.canonical:
path: '/{type}/{slug}'
defaults:
_controller: 'MyBundle:Something:foo'
requirements:
type: different|strings|that|can|match|
Inside MyBundle\SomethingController:
public function fooAction($id)
{
return new Response("bar");
}
Then going to http://localhost/match/fom shows the "bar" response.
I have read the documentation again (RTM), and found out that it is not possible in Drupal 8, while it is possible in Symfony.
Note that the first item of the path must not be dynamic.
Source: Structure of routes in Drupal 8

"Name" of the route in Symfony2 relevance

I am wondering, what is the use of the "name" of the route in Symfony2 routes.yml file
_welcome:
pattern: /
defaults: { _controller: AcmeDemoBundle:Welcome:index }
For example here, pattern and defaults are obviously keywords, however, what the _welcome stands for? Is it arbitrary or a is it kind of predefined keyword for every bundle? Thank you in advance.
The route name is useful for route debugging and generating urls. You will find the route name is used extensively in Twig templates when generating links with the path() function. You can also generate urls from the route name in a controller. More information here
It is good to follow a logical convention when naming routes. Something like:
bundle_name.controller.action is a good place to start.
In this case _welcome is an arbitrary, unique id for each route you have in your project. You need it if you want to generate a url out of a template or if you want to overwrite a vendor-route...

Symfony 2 #Route annotation case-sensitive

I'm trying to create a url with annotations of the route.
The problem is that I can write any URL large, small or different.
#Route("/{staat}/", name="showStaats",requirements={"location" = "berlin|bayern|brandenburg"})
This URL can be accessed both from www.example.com/berlin and under www.example.com/Berlin.
I would, however, that it is attainable only under www.example.com/berlin.
Answering the question "How to make case-insensitive routing requirement":
You can add case-insensitive modifier to requirement regexp like so:
(?i:berlin|bayern|brandenburg)
You have "/{staat}/", but your requirements set "location" = ..., these should match, so maybe that's the cause of your problem.
If you don't want to hardcode the list of states in your route, you could inject a service containter parameter with a list of states. Just see How to use Service Container Parameters in your Routes in the documentation for how to do that.
If you just want to check, whether that state is all lower-cased you could try the following requirement:
staat: "[a-z-]+"
This should match only lowercase characters and dash (e.g. for "sachsen-anhalt"). But I'm not entirely sure if this will work as the router's regex-detection is a bit quirky.
You could also create a custom Router Loader which will create routes programmatically, e.g. by fetching the list of states from a database or file.
edit:
As I wrote in my comment I would add the list of params as a Service Container parameter, e.g. %my_demo.states% containing a list of states. I'm not sure however if this will work with annotations. So here is a quick workaround how to get it working.
In your app/config/config.yml you append the %my_demo.states% parameter:
my_demo:
states: ["berlin", "brandenburg", "sachsen-anhalt", ... ]
In your app/config/routing.yml there should be something like this:
my_demobundle:
resource: "#MyDemoBundle/Controller/"
prefix: /
type: annotation
The type: annotation and #MyDemoBundle is the relevant part. Add the following route before this one, to make sure it takes precedence:
showStaats:
path: /{state}
defaults: { _controller: MyDemoBundle:State:index }
requirements:
state: %my_demo.states%
This will add a route which will apply before your annotations using the list of states as parameters. This is a bit crude, as you are mixing yml/annotation-based routing, but it's imo still better than cramming a list of 16 states in the annotation, not to mention its easier to maintain.

Symfony2 routing: How to request that the route will be taken from only one template

I heve an embedded controller in my base template. It's a search bar.
For the search bar controller, I have a route "myProject/search".
What I would like is that this route will be taken only when the template where I am embedding the controller (base.html.twig) will call it, and not when i manually put in the browser: "myproject/search".
Any idea on how to do that.
I think, since some time you can't do it:
http://symfony.com/doc/current/book/templating.html#embedding-controllers
quote from the docs:
Even though this controller will only be used internally, you'll need
to create a route that points to the controller
(...)
Since Symfony 2.0.20/2.1.5, the Twig render tag now takes an absolute
url instead of a controller logical path. This fixes an important
security issue (CVE-2012-6431) reported on the official blog. If your
application uses an older version of Symfony or still uses the
previous render tag syntax, you should upgrade as soon as possible.
Anyway, I guess, you can try do it yourself by passing some "secret" argument to search action when you call it from your template. Next in the action you check if the argument was passed to it, and if not you throw 404.
Another way to achieve your goal is use .htaccess file.
You can restrict your route to a certain method by _method option in your routing configuration:
your_rote:
pattern: /myProject/search
defaults: { _controller: YourBundle:YourController:YourAction }
requirements:
_method: POST

Symfony routing with an API Web Service

I'm finishing the API of our web service. Now I'm thinking on how to make the route changes, so if we decide to make a new version we don't break the first API.
right now:
url: /api/:action
param: { module: api, action: :action }
requirements:
sf_format: (?:xml|json)
what i've thought:
url: /api/v1/:module/:action
param: { module: api1, action: :action }
requirements:
sf_format: (?:xml|json)
url: /api/v2/:module/:action
param: { module: api2, action: :action }
requirements:
sf_format: (?:xml|json)
That's easy, but the perfect solution would be to have the following kind of route
# Automatically redirects to one module or another
url: /api/v:version/:module/:action
param: { module: api:version, action: :action }
requirements:
sf_format: (?:xml|json)
any ideas on how to do it? what do you recommend us to do?
thanks!
I think the approach of having 2 routes, one with v1 on it and another with v2 is the better solution. It may sound like redoing work, but if u start to think, the reason to have to versons is that the first is imcompatible with second. So, mix the 2 logics would be an overkill. If you think in some day in the future when u can have 3 version, how do you think your logic will look like?
The better solution is to make the both separate, so if u need to stop doing support for version 1 it will be easy as remove the file for version 1. =)
How about just use the old routing rules and append .xml1/.xml2/.json1/.json2 to the end? That way you can reuse your current modules and only need to create a new view ("indexSuccess.xml1.php").
Or create a new routing class?
You should probably create a custom route collection, as shown here.
This would allow you to match any routing needs you have. You could move the version logic to the route class and route collection class.

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