Server prefix and rails routes - ruby-on-rails

When i'm starting the server with the path option
script/server --path=/myapp
while having a route
map.route 'foo', :controller => 'bar', :action => 'buzz'
then
ActionController::Routing::Routes.recognize_path('/myapp/foo')
raises an error "No route matched ..."
Question: How can i make Rails built-in routing recognize with path prefix?
Thanks a lot!

Try putting config.action_controller.relative_url_root = "/myapp" in environments.rb and start your server normally.
Then Rails will append /myapp/ to all your routes

There is actually a path_prefix available for routes so you can do something like this:
map.foo, 'foo', :controller => 'bar', :action => 'buzz', :path_prefix => 'myapp'
That should give you a route for /myapp/foo

thanks a lot for your answers!
unfortunately i can't use the :path_prefix option in map.foo, because it's not always the case (the end-user should be responsible for setting or not the prefix while not worring about any routes).
i fingered out following:
path = '/myapp/foo'
if relative_url_root = ActionController::Base.relative_url_root
path.sub!(/\A#{relative_url_root}/i, '')
end
params = ActionController::Routing::Routes.recognize(path)
# => {:controller => 'bar', :action => 'buzz'}

Related

Rails route: pull entire path string into one parameter

I've just added a CMS to my rails 2.2.2 app. I want to have it set up so that at the bottom of my routes i have a catch-all which shoves the entire path into a single parameter and then calls the cms controller, which then looks for a page matching that path
eg
http://mysite.com/something/about/foo
=> {:controller => "cms", :action => "show", :page => "something/about/foo"}
I can't figure out what options i need to add (if any) to stop it splitting on the slashes. Any ideas anyone? Remember this is rails 2. Thanks!
Just discovered the answer to this in the official rails api documentation (doh):
4.9 Route Globbing
Route globbing is a way to specify that a particular parameter should be matched
to all the remaining parts of a route. For example
map.connect 'photo/*other', :controller => 'photos', :action => 'unknown',
In my case:
map.connect "/*page", :controller => "cms", :action => "show"
means that
http://mysite.com/something/about/foo
=> {:controller => "cms", :action => "show", :page => ["something", "about", "foo"]}
which is fine as i can easily then join params[:page] to get the full path again.
thanks for reading :)

How do I specify a default in a rails 2.3 route?

In my Rails 2.3.11 app, I want to specify that the default format for a route is :xml. According to the documentation I can do this using :defaults
map.connect '/myroute', :controller => 'mycontroller',
:action => 'myaction',
:defaults => {:format => :xml}
The documentation specifically says this should work:
You can also define other defaults in a route by supplying a hash for
the :defaults option. This even applies to parameters that are not
explicitly defined elsewhere in the route.
But if I do that, then I get this error:
/Users/simon/myproject/vendor/rails/actionpack/lib/action_controller/routing/builder.rb:107:in `assign_route_options':
format: No matching segment exists; cannot assign default (ArgumentError)
I see that a lighthouse ticket has been raised about this; a respondent notes that it works for resources but not named routes; an admin has incorrectly marked it as fixed because he's tested it on resources. Ho hum.
Elsewhere it is suggested that i do it like this:
map.connect '/myroute', :controller => 'mycontroller',
:action => 'myaction',
:format => :xml
but then if I test it
assert_generates '/myroute', :controller => 'mycontroller',
:action => 'myaction'
I get told that no route matches :controller => 'mycontroller', :action => 'myaction' - I have to put the format in by hand, so it isn't a default.
How do I specify a default in a rails 2.3 route? Do I need to get them to reopen the ticket and actually fix the bug? Is there any hope that that will happen now Rails 3 is out?
Hmmm that is pretty weird. I've used :defaults hash in a named route, and it worked for me. Can you try using a named route instead and see if it works ?
map.myroute '/myroute', :controller => 'mycontroller',
:action => 'myaction',
:defaults => {:format => :xml}

Rails 3 Routing problem

I convert the Rails-2 application into Rails-3. In my Rails-2 routing i have the routes like the below
Rails 2
map.connect 'example/:action/:id.:format', :controller => 'Test',:q =>'example-string'
Note: This is working well in Rails-2 application; when the url comes with /example it redirect to Test controller's index action with the parameter q="example-string"
I converted the above to support Rails-3 routes:
match 'example(/:action(/:id.(:format)))',:to => 'Test',:q=>'example-stirng'
The problem is I got the Routing Error /example not found.
How can i change the Rails-2 routes into Rails-3 routes?
You almost got it right. Should be
match 'example(/:action(/:id.(:format)))',:controller => :test, :q=>'example-stirng'
:to => "foo#bar" is a shortcut for :controller => :foo, :action => :bar

How to pass a default query param with Rails 2.3.x routing

I'm trying to do something trivial. I have a bunch of URLs that I need to map like the following:
http://example.com/foo
http://example.com/foo/something
Both need to go to the same controller/action. The problem I'm having is when http://example.com/foo is invoked, I need to specify a default query parameter. I thought that's what the :defaults hash does in routes.rb, but unfortunately the following doesn't work:
map.connect 'foo', :controller => 'something', :action => 'anaction',
:defaults => { :myparam => 'foobar' }
This should route http://example.com/foo to the something controller, anaction action, and make params[:myparam] point to the string "foobar".
I'm assuming for the second example http://example.com/foo/something, I'll need an additional route.
What's the best way to tackle this?
I wouldn't complicate things by adding such logic to my routes file, I'd just do it in my action:
params[:my_param] ||= 'foobar'
Untested, but:
map.connect 'foo', :controller => 'something', :action => 'anaction', :myparam => 'foobar'
It looks like the :controller and :action arguments in there are not in any way special, but just end up feeding into params. The 2.3.8 documentation seems to confirm this.
More formally, you can include
arbitrary parameters in the route,
thus:
map.connect ':controller/:action/:id', :action => 'show', :page => 'Dashboard'
This will
pass the :page parameter to all
incoming requests that match this
route.

Rails routes matching query parameters

Rails routes are great for matching RESTful style '/' separated bits of a URL, but can I match query parameters in a map.connect config. I want different controllers/actions to be invoked depending on the presence of a parameter after the '?'.
I was trying something like this...
map.connect "api/my/path?apple=:applecode", :controller => 'apples_controller', :action => 'my_action'
map.connect "api/my/path?banana=:bananacode", :controller => 'bananas_controller', :action => 'my_action'
For routing purposes I don't care about the value of the parameter, as long as it is available to the controller in the params hash
The following solution is based on the "Advanced Constraints" section of the "Rails Routing from the Outside In" rails guide (http://guides.rubyonrails.org/routing.html).
In your config/routes.rb file, include a recognizer class have a matches? method, e.g.:
class FruitRecognizer
def initialize(fruit_type)
#fruit_type = fruit_type.to_sym
end
def matches?(request)
request.params.has_key?(#fruit_type)
end
end
Then use objects from the class as routing constraints, as in:
map.connect "api/my/path", :contraints => FruitRecognizer.new(:apple), :controller => 'apples_controller', :action => 'my_action'
Unless there is a concrete reason why you can't change this, why not just make it restful?
map.connect "api/my/path/bananas/:id, :controller => "bananas_controller", :action => "my_action"
If you have many parameters, why not use a POST or a PUT so that your parameters don't need to be exposed by the url?

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