No Route Found For GET /magic_link (BlockchainCoffeeWeb.Router)

May 9, 2025 by ADMIN 64 views

No Route Found for GET /magic_link (BlockchainCoffeeWeb.Router)

Introduction

When trying to open a magic link from the mailbox in a new project from ash-hq, an error occurs. The error message indicates that no route is found for the GET /magic_link request. This article will guide you through the process of resolving this issue and provide a step-by-step solution to fix the problem.

Understanding the Error

The error message is a Phoenix.Router.NoRouteError, which is raised when the router is unable to find a matching route for the incoming request. In this case, the request is a GET request to the /magic_link endpoint.

Analyzing the Code

To resolve this issue, we need to analyze the code and understand why the router is unable to find a matching route. The code snippet provided shows the relevant parts of the deps/phoenix/lib/phoenix/router.ex file, which is responsible for routing incoming requests.

536           case __match_route__(decoded, method, host) do
537             {metadata, prepare, pipeline, plug_opts} -&gt;
538               Phoenix.Router.__call__(conn, metadata, prepare, pipeline, plug_opts)
539   
540             :error -&gt;
541>              raise NoRouteError, conn: conn, router: __MODULE__
542           end
543         end
544   
545         defoverridable init: 1, call: 2
546       end

As we can see, the __match_route__ function is called to match the incoming request with a route. If no matching route is found, a NoRouteError is raised.

Resolving the Issue

To resolve this issue, we need to add a route for the /magic_link endpoint in the lib/blockchain_coffee_web/router.ex file.

defmodule BlockchainCoffeeWeb.Router do
  use BlockchainCoffeeWeb, :router

  scope "/", BlockchainCoffeeWeb do
    pipe_through [:browser, :fetch_session]

    get "/magic_link", MagicLinkController, :index
  end
end

In this code snippet, we added a new route for the /magic_link endpoint, which points to the MagicLinkController module. The index action is called when the /magic_link endpoint is accessed.

Creating the MagicLinkController

To complete the solution, we need to create the MagicLinkController module.

defmodule BlockchainCoffeeWeb.MagicLinkController do
  use BlockchainCoffeeWeb, :controller

  def index(conn, _params) do
    # Handle the magic link request
  end
end

In this code snippet, we created a new controller module called MagicLinkController. The index action is called when the /magic_link endpoint is accessed.

Conclusion

In this article, we resolved the No Route Found for GET /magic_link (BlockchainCoffeeWeb.Router) error by adding a new route for the /magic_link endpoint in the lib/blockchain_coffee_web/router.ex file. We also created the MagicLinkController module to handle the magic link request.

Additional Information

The error message is a Phoenix.Router.NoRouteError, which is raised when the router is unable to find a matching route for the incoming request.
code snippet provided shows the relevant parts of the deps/phoenix/lib/phoenix/router.ex file, which is responsible for routing incoming requests.
To resolve this issue, we need to add a route for the /magic_link endpoint in the lib/blockchain_coffee_web/router.ex file.
We also need to create the MagicLinkController module to handle the magic link request.

Connection Details

Params: The request parameters are stored in the conn.params map.
Request Info: The request information is stored in the conn.request_info map.
Headers: The request headers are stored in the conn.request_headers map.
Session: The session information is stored in the conn.assigns map.

Code Snippets

deps/phoenix/lib/phoenix/router.ex:

536           case __match_route__(decoded, method, host) do
537             {metadata, prepare, pipeline, plug_opts} -&gt;
538               Phoenix.Router.__call__(conn, metadata, prepare, pipeline, plug_opts)
539   
540             :error -&gt;
541>              raise NoRouteError, conn: conn, router: __MODULE__
542           end
543         end
544   
545         defoverridable init: 1, call: 2
546       end

lib/blockchain_coffee_web/router.ex:

defmodule BlockchainCoffeeWeb.Router do
  use BlockchainCoffeeWeb, :router

  scope "/", BlockchainCoffeeWeb do
    pipe_through [:browser, :fetch_session]

    get "/magic_link", MagicLinkController, :index
  end
end

lib/blockchain_coffee_web/magic_link_controller.ex:

defmodule BlockchainCoffeeWeb.MagicLinkController do
  use BlockchainCoffeeWeb, :controller

  def index(conn, _params) do
    # Handle the magic link request
  end
end

Conclusion

Introduction

In our previous article, we resolved the No Route Found for GET /magic_link (BlockchainCoffeeWeb.Router) error by adding a new route for the /magic_link endpoint in the lib/blockchain_coffee_web/router.ex file. We also created the MagicLinkController module to handle the magic link request. In this article, we will answer some frequently asked questions related to this issue.

Q: What is the cause of the No Route Found error?

A: The cause of the No Route Found error is that the router is unable to find a matching route for the incoming request. In this case, the request is a GET request to the /magic_link endpoint.

Q: How do I add a new route for the /magic_link endpoint?

A: To add a new route for the /magic_link endpoint, you need to modify the lib/blockchain_coffee_web/router.ex file. Add a new scope for the /magic_link endpoint and define the route for the MagicLinkController.

defmodule BlockchainCoffeeWeb.Router do
  use BlockchainCoffeeWeb, :router

  scope "/", BlockchainCoffeeWeb do
    pipe_through [:browser, :fetch_session]

    get "/magic_link", MagicLinkController, :index
  end
end

Q: What is the MagicLinkController module?

A: The MagicLinkController module is a controller module that handles the magic link request. It is responsible for processing the request and returning a response.

defmodule BlockchainCoffeeWeb.MagicLinkController do
  use BlockchainCoffeeWeb, :controller

  def index(conn, _params) do
    # Handle the magic link request
  end
end

Q: How do I handle the magic link request in the MagicLinkController module?

A: To handle the magic link request in the MagicLinkController module, you need to define the index action. This action will be called when the /magic_link endpoint is accessed.

defmodule BlockchainCoffeeWeb.MagicLinkController do
  use BlockchainCoffeeWeb, :controller

  def index(conn, _params) do
    # Handle the magic link request
  end
end

Q: What are the benefits of using a controller module to handle the magic link request?

A: Using a controller module to handle the magic link request has several benefits. It allows you to separate the request handling logic from the router configuration, making it easier to maintain and update the code. It also allows you to reuse the controller module in other parts of the application.

Q: How do I test the magic link request handling logic?

A: To test the magic link request handling logic, you can use the Phoenix test framework. Create a test module that defines a test case for the MagicLinkController module.

defmodule BlockchainCoffeeWeb.MagicLinkControllerTest do
  use BlockchainCoffeeWeb.ConnCase

  test "handle magic link request" do
    # Test the magic link request handling logic
  end
end

Conclusion

In this article, we answered some frequently asked questions related to the No Route Found for GET /magic_link (BlockchainCoffeeWeb.Router) error. We provided-by-step instructions on how to add a new route for the /magic_link endpoint and create the MagicLinkController module. We also discussed the benefits of using a controller module to handle the magic link request and provided an example of how to test the request handling logic.

Additional Information

The No Route Found error is caused by the router being unable to find a matching route for the incoming request.
To add a new route for the /magic_link endpoint, modify the lib/blockchain_coffee_web/router.ex file.
The MagicLinkController module is responsible for handling the magic link request.
Using a controller module to handle the magic link request has several benefits, including separating the request handling logic from the router configuration and reusing the controller module in other parts of the application.
To test the magic link request handling logic, use the Phoenix test framework and create a test module that defines a test case for the MagicLinkController module.

Code Snippets

lib/blockchain_coffee_web/router.ex:

defmodule BlockchainCoffeeWeb.Router do
  use BlockchainCoffeeWeb, :router

  scope "/", BlockchainCoffeeWeb do
    pipe_through [:browser, :fetch_session]

    get "/magic_link", MagicLinkController, :index
  end
end

lib/blockchain_coffee_web/magic_link_controller.ex:

defmodule BlockchainCoffeeWeb.MagicLinkController do
  use BlockchainCoffeeWeb, :controller

  def index(conn, _params) do
    # Handle the magic link request
  end
end

test/blockchain_coffee_web/magic_link_controller_test.exs:

defmodule BlockchainCoffeeWeb.MagicLinkControllerTest do
  use BlockchainCoffeeWeb.ConnCase

  test "handle magic link request" do
    # Test the magic link request handling logic
  end
end