How to Get Request.Uri in Model in Rails

How do I get the current absolute URL in Ruby on Rails?

For Rails 3.2 or Rails 4+

You should use request.original_url to get the current URL. Source code on current repo found here.

This method is documented at original_url method, but if you're curious, the implementation is:

def original_url
  base_url + original_fullpath
end

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For Rails 3:

You can write "#{request.protocol}#{request.host_with_port}#{request.fullpath}", since request.url is now deprecated.

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For Rails 2:

You can write request.url instead of request.request_uri. This combines the protocol (usually http://) with the host, and request_uri to give you the full address.

How to get the actual HTTP request from a model in rails 3?

You can store the request in the thread, and then access it anywhere.
This is def a hack as you really should not break the MVC convention this way, and if a model is really request dependent you could always pass the request to the model as a parameter.

but the hack to make your request available everywhere would be for application_controller.rb:

before_filter :store_request_in_thread

def store_request_in_thread
  Thread.current[:request] = request
end

and in your model somemodel.rb or really anywhere you expect request to already exist, you can just access the request:

def something
  request = Thread.current[:request]
end

Rails - How To Get Full URL in Model

helper method is only available in view or decorator.
it's better to define url in the decorator.

if you want to use helper method in the model, try this

def url
  Rails.application.routes.url_helpers.product_url(self)
end

how to get the request uri inside active admin

If you want to have CRUD for your polymorphic nested resources (products/pictures and services/pictures), your application needs to have routes like /admin/products/:id/images and /admin/services/:id/images. The problem is that when you use belongs_to :parent in a register block, active_admin will only generate one nested route admin/parents/:id/child, whereas you need two. Furthermore, :parent can't be determine by the current url, because the call belongs_to :parent itself is used to create the current url (the resource path).

To get around this, you can define the routes yourself in configs.rb

namespace :admin do
  resources :services do
    resources :pictures
  end

  resources :products do
    resources :pictures
  end
end

and tell active_admin to use these routes by writing controller.belongs_to :service, :product, polymorphic: true in your register block for Picture.

Source: https://github.com/gregbell/active_admin/issues/1183

how to get the request uri inside active admin

If you want to have CRUD for your polymorphic nested resources (products/pictures and services/pictures), your application needs to have routes like /admin/products/:id/images and /admin/services/:id/images. The problem is that when you use belongs_to :parent in a register block, active_admin will only generate one nested route admin/parents/:id/child, whereas you need two. Furthermore, :parent can't be determine by the current url, because the call belongs_to :parent itself is used to create the current url (the resource path).

To get around this, you can define the routes yourself in configs.rb

namespace :admin do
  resources :services do
    resources :pictures
  end

  resources :products do
    resources :pictures
  end
end

and tell active_admin to use these routes by writing controller.belongs_to :service, :product, polymorphic: true in your register block for Picture.

Source: https://github.com/gregbell/active_admin/issues/1183

Access request URI in a custom library class in Rails

Assuming the URI is initialized/stored in the same class, you'll have to define it yourself.

If the URL is defined when the class is initialized then create either a class or instance variable. All methods will be able to see it.

Instance variable:

class Blah
  def initialize(url)
    @url = url
  end

  def method1
    url = @url
  end
end

Class variable:

class Blah
  @@url = nil
  def initialize(url)
    @@url = url
  end

  def method1
    url = @@url
  end
end

If the URL comes from a different class then you'll have to use whatever accessor that class provides. If there isn't one then you could try something like OtherClass::URL_variable where you dig up the variable name of the URL by looking in the source or by extending that class to provide an accessor.

Ruby on Rails how to get current URL?

request.original_url 

shall provide you current url in rails 4.

You can visit this resource for more info @ How do I get the current absolute URL in Ruby on Rails?

How to retrieve the current URL within a class?

I finally figured it out with some help and debugging. Because I was requesting the URL within a class that was creating a new object in the database, I had to use request.referrer:

url = request.referrer
uri = URI::parse(url)
id = uri.path.split('/')[2]

And because my URL was like "https://www.example.com/room/4", the id returned a value of 4.

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