How to do this with routing in Rails? - ruby-on-rails-3

Say we have a simple resource called news:
resources :news
The generated paths are in this form /news/:id. I would like to provide a shortcut for this by dropping the /news/, so that /1/ goes to news#show with id 1 and the same for all the other resourceful actions of news.
I figured it's probably something along the lines of
match '/:id(/:action)', :controller => 'news'
but this isn't working.

To change the path to a resource use :path =>
resources :news, :path => "/"

Try this at the very bottom of your routes file:
match ':id', :to => "news#show"

Placing a custom route at the bottom of your routes.rb should work, that will give it lowest priority and allow valid routes to work first:
match '/:id', :to => 'news#show'
It's important to note that this will basically route anything that wasn't previously caught, and does not exist as an actual static file, to that controller/action. You will want to make sure you render your 404 error page if the news record does not exist.

Related

root path for multiple controllers on rails routes

I have two resource controllers where I am using a slug to represent the ID. (friendly_id gem).
I am able to have the show path for one resource on the route but not for two at the same time. ie.
root :to => 'home#index'
match '/:id' => "properties#show"
match '/:id' => "contents#show"
Basically I want urls like,
# Content
domain.com/about-us
domain.com/terms
# Property
domain.com/unique-property-name
domain.com/another-unique-property-name
Whatever resource I put on top works. Is there a way to do this?
Thanks in advace if you can help.
This is untested, but try utilizing a constraint on your route.
root :to => 'home#index'
match '/:id', :to => "properties#show",
:constraints => lambda { |r| Property.find_by_id(r.params[:id]).present? }
match '/:id', :to => "contests#show",
:constraints => lambda { |r| Contest.find_by_id(r.params[:id]).present? }
Alternatively, you can create a separate class that responds to matches? instead of defining a lambda proc. (I recommend placing these classes into separate files that will autoload within your Rails app.)
# app/constraints/property_constraint.rb
class PropertyConstraint
def self.matches?(request)
property = Property.find_by_id(request.params[:id])
property.present?
end
end
# app/constraints/contest_constraint.rb
class ContestConstraint
def self.matches?(request)
contest = Contest.find_by_id(request.params[:id])
contest.present?
end
end
# config/routes.rb
root :to => 'home#index'
match '/:id', :to => "properties#show", :constraints => PropertyConstraint
match '/:id', :to => "contests#show", :constraints => ContestConstraint
Unfortunately this results in an extra DB query (once in the routes, and once more in your controller). If anyone has a suggestion on minimizing this, please share. :)
This Rails Engine does what you want:
Slug Engine at Github
Basically, the author's approach was to mount a Rails Engine inside his main app. This Engine incorporates both a controller for handling slugs that exist and a piece of middleware for filtering out and abstaining on slugs that don't exist.
He explains why he took this approach and other aborted solutions in a rather detailed and interesting blog post. This blog post and the slug engine source code should be enough detail for you to get your own code up and running, but that open-source engine seems to be exactly what you're looking for if you want a drop-in solution.
You can do it in a middleware
Detect slug in path
If Content with this slug exists - change request path to "contents/:id"
If Property with this slug exists - change request path to "properties/:id"
in your routing set:
match 'contents/:id' => "properties#show"
match 'properties/:id' => "contents#show"
You could write another controller which takes the id from the router and checks if the id belongs to properties or content and renders the appropriate view.
match '/:id' => "router#show"
The controller would do something like this:
def show
#property = Property.find(params[:id])
if #property then
render 'property/show'
else
#content = Content.find(params[:id])
render 'content/show
end
end
Havn't tested this code, but this idea should work.
I would suggest that you do this in a more RESTful way, if possible. Basically, you have two different resources and you should separate them:
match 'properties/:id' => "properties#show"
match 'contents/:id' => "contents#show"
This will give you many advantages down the road. One immediate benefit is that you can avoid clashes between ids for properties and content. (Note that friendly_id will not help you with inter-model slug clashes in your original scheme.)

Pagination in Rails 3 with Kaminari always "destroys" one part of the URL

I'm using a Rails 3 App with Kaminari for Pagination. Because of my language, SEO and friendly URLs I want to change my URLs looks like. But it seems I have to decide between friendly pagination links and or displaying the correct method names. But first things first:
I have a model, which is called "pages" and contains some pages which can't be applied to only one model or don't contain any model. The following is a snippet of my "routes.rb":
match'/neugikeiten', :to => 'pages#neuigkeiten'
scope(:path_names => { :new => "neu", :edit => "bearbeiten", :delete => "loeschen", :index => "index", :page => "seite" }) do
resources :news, :path => "neuigkeiten"
end
As you can see, I match every page from pages to a single name and match all my other models and methods (I only used one as example) with scope. All of this works just fine. But now I have to add the Kaminare routes, for which the route looks like this:
resources :pages do
get 'seite/:page', :action => :neuigkeiten, :on => :collection
end
So, basically what I want to get is an URL like this:
/neuigkeiten/seite/2
The 2 is just an example and seite is the german word for page. But what i do get, is this:
/pages/seite/2
So, I get the model name, instead of the name I defined for this single page. I already tried switching the different codes but either I just have the original model name in the URL or I don't get nice URLs for pagination, which look like this:
/neuigkeiten?page=2
And if I try to match the pages without the resource like this:
match'/tagebuch/seite/:page', :to => 'pages#tagebuch', :on => :collection
I get the following error.
can't use collection outside resources scope
It seems to me that there should be another method to do this, because I can't be the only one having this kind of problem.
I'm glad for any help!
If anybody is interested in an solution, I found one myself. It's not perfect, but it works.
I had to install an extra gem for the localisation called "i18n_routing". Then in my routes.rb I did:
localized do
resources :news, :path => "neuigkeiten" do
get 'seite/:page', :action => :index, :on => :collection
end
end
The rest is done in the localized language file (en.yml).

Naming params of nested routes

resources :leagues do
resources :schedule
end
This generates:
leagues/:id
leagues/:league_id/schedule/:id
How can I keep the league ID from changing param names?
So it'll be:
leagues/:id
leagues/:id/schedule/:schedule_id
No, please do not do this.
The reason for it being this way is that it provides a common interface for nested resources across every single application. By making it different in your application, you're effectively going "against the grain" of Rails. Rails has a strict set of conventions that you should stick to. When you stray from this path, things get messy.
However, if you do want to shoot yourself in the foot, metaphorically speaking, you will need to define the routes manually. Here's the routes for the seven standard actions in a controller:
get 'leagues/:id/schedules', :to => "schedules#index", :as => "league_schedules"
get 'leagues/:id/schedule/:schedule_id', :to => "schedules#show", :as => "league_schedule"
get 'leagues/:id/schedules/new', :to => "schedules#new", :as => "new_league_schedule"
post 'leagues/:id/schedules', :to => "schedules#create"
get 'leagues/:id/schedule/:schedule_id/edit', :to => "schedules#edit", :as => "ed it_league_schedule"
put 'leagues/:id/schedule/:schedule_id', :to => "schedules#update"
delete 'leagues/:id/schedule/:schedule_id', :to => "schedules#destroy"
As you can see, it's quite ugly. But, if you really really really want to do it this way, that's how you'd do it.
You can set "param" option on resource route to override the default "id" param:
resources :leagues do
resources :schedule, param: schedule_id
end
refs to the Rails Routing Doc: http://guides.rubyonrails.org/routing.html#overriding-named-route-parameters
It appends the ID to the nested_param which is a bummer because I would like mine to be without the singular name. It looks like they really don't want you to make it only like :id as it could have conflicts. Plus it would be a bit of a diff from the normal restful routing that rails likes to use.
https://github.com/rails/rails/blob/5368f2508651c92fbae40cd679afbafdd7e98e77/actionpack/lib/action_dispatch/routing/mapper.rb#L1207
namespace :account, defaults: { type: 'account' }do
resources :auth, param: :lies_id, only: [] do
get :google
end
end
Rake routes returns the following
$ rake routes | grep /account/auth
account_auth_google GET /account/auth/:auth_lies_id/google(.:format)
So the solution which seams simpler is to just change the controller to use the nested param name it creates.

How to give a different view for each user in Rails 3?

So I have my table users and each record has a username field
and I have my root to controller main and action `index
root :to => 'pages#main'
so if go to http://mydomain.com It'll show my main#index page and i have the about and contact pages as well.
but if i go to http://mydomain.com/Mr_Nizzle it shows me the page of the user Mr_Nizzle which is on users#show (just like example) and as well for the other users to show every user's page...
is it right if i go =>
match ':username' => 'users#show'
match 'contact_us' => 'main#contact'
match 'about' => 'main#about'
root :to => 'pages#main'
so i can leave all the logic on route instead of in the main controller?
Thanks.
I'm not sure exactly what your asking, however this may be of some help. I think (at least for about and contact) the correct syntax is match '/contact_us' => 'main#contact (the same for about but replace contact with about), the root :to => 'pages#main' is correct (that's the same as doing match '/' => 'pages#main')
What are you asking about the match ':username' => 'users#show'? Do you want (for example) a url to be http://mydomain.com/users_username ? Where users_username is the name of the user's profile that they are navigating to? If so, i think you can do something like match '/:username' => 'users#show' but i'm not entirely sure.
Get back to me on what works and what doesn't

Rails 3 routes: How to avoid conflict with 'show' action?

I currently have the following routes set up for photos:
resources :photos
match 'photos/:user' => 'photos#user', :as => :user_photo
match 'photos/:user/:key' => 'photos#show', :as => :show_photo
Those two match routes give me URLs like:
http://example.com/photos/joe_schmoe
http://example.com/photos/joe_schmoe/123xyz
...similar to the way Flickr formats its URLs.
The problem I'm having, though, is that the photos/:user route is either interpreted as the show method, or if I put those custom routes before the resources then routes like /new get interpreted as the user method.
How can I get around that without having to do a ton of custom routes?
You'll want to put this custom route above the resources :users, so that it is matched first in the routes.
match 'photos/:user' => 'photos#user', :as => :user_photo
resources :photos
Additionally you can disable the show action altogether:
resources :photos, :except => :show
It's not a good idea to mix restful routes with custom match routes on the same resource. As you observed these two routes will intercept each others actions. Your best choice is to pick only one routing system for a resource and stick with it. If you want flickr style routes you should remove the restful route and add the other necessary match routes for new/create/etc you might need. If you desperately want to keep both of these routes You either need to disable show from the rest route with the rest route being on top, or you disable new from the match route while match being on top. You can use regexp to filter out some requests from match like this:
match 'photos/:user' => 'photos#user', :as => :user_photo, :constraints => { :user => /.*[^n][^e][^w].*/ }
This gets ugly really fast tho and I suggest just not using the rest route at all.