how to create dynamic routes and helpers in rails3

Question

i have a task to create mapping of different urls at run time .
In the application i have a GUI interface which displays list of routes from routes.rb file.
User has the ability to change that url to some different name from the interface
eg. (abc/mno) --user can change them to --(hello)
so if user type /hello in the browser request is redirected to /abc/mno
i have to store those mapped routes in a database.
how to add a dynamic mapped route to already defined routes(routes.rb) while creating a new record in database
how to add routes from the database while loading routes.rb file.
i am not able to figure out how to extend the default router so that it can include routes from the database ..

score 1 · Answer 1 · edited May 23 '17 at 12:17

1

I don't have a complete solution for you, but you can start with two approaches:

Use custom URL constraint: Dynamic URL -> Controller mapping for routes in Rails
Use Rack middleware: Dynamic Rails routing based on database

edited May 23 '17 at 12:17

Community

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answered May 15 '13 at 08:58

Blue Smith

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problem of creating a controller that handles all routing is that .. when user creates a mapping from gui that mapping is not reflected until i restart my server again..different path_helpers are also not available – Sanjeev May 15 '13 at 09:40
@BlueSmith The second link posted by BlueSmith is pretty much dead on. The example shown is a good starting point, the changes should be straightforward to do what you want. – RadBrad May 20 '13 at 15:38

score 1 · Answer 2 · answered May 21 '13 at 15:51

If you don't want to use rack middleware, you can use constraints. Hopefully, your dynamic routes are scoped to something, like "/abc/anything-after-here-can-be-dynamic", as opposed to straight off the root...

So, lets say you wanted dynamic routes based upon User's first name, then you would do the following:

#config/routes.rb
match '/abc/:route' => "abc#dynamicroute", :contraints => DynamicRouteConstraint.new

#lib/dynamic_route_constraint.rb
class DynamicRouteConstraint < Struct.new
  def matches?(request)
    User.find_by_first_name(request.params[:route]).present?
  end
end

#app/controllers/abc_controller.rb
class AbcController < ApplicationController
  def dynamicroute
    @user = User.find_by_first_name(params[:route])
    #render or redirect, however you wish
  end
end

You don't need to instantiate a new object, you could just call a class method. +1 to your answer because it inspired me to implement my own solution! — Cyzanfar, May 07 '17 at 03:32

how to create dynamic routes and helpers in rails3

2 Answers2