Ich benutze canary lib in meiner phoenix app.phoenix canary not_found handler
Ich schrieb in config.exs:
config :canary, repo: MyApp.Repo,
unauthorized_handler: {MyApp.Helpers, :handle_unauthorized},
not_found_handler: {MyApp.Helpers, :handle_not_found}
und erstellt Helfer:
defmodule MyApp.Helpers do
use Phoenix.Controller
require Logger
import Plug.Conn
def handle_unauthorized(conn) do
conn
|> put_status(401)
|> put_view(MyApp.ErrorView)
|> render("401.json")
|> halt
end
def handle_not_found(conn) do
conn
|> put_status(404)
|> put_view(MyApp.ErrorView)
|> render("404.json")
|> halt
end
end
mein abilities.ex:
defimpl Canada.Can, for: MyApp.User do
alias MyApp.Operation
alias MyApp.User
def can?(user, action, operation = %Operation{}) when action in [:show, :update, :delete] do
IO.puts "check ability for operation"
if operation.user_id == user.id do
IO.puts "success"
true
else
false
end
end
def can?(subject, action, resource) do
raise """
Unimplemented authorization check for User! To fix see below...
Please implement `can?` for User in #{__ENV__.file}.
The function should match:
subject: #{inspect subject}
action: #{action}
resource: #{inspect resource}
"""
end
end
Und unauthorized_handler gut funktioniert. Aber not_found_handler funktioniert nicht.
[error] #PID<0.709.0> running MyApp.Endpoint terminated
Server: localhost:4000 (http)
Request: GET /api/v1/operations/11
** (exit) an exception was raised:
** (RuntimeError) Unimplemented authorization check for User! To fix see below...
Please implement `can?` for User in /home/mars/phoenix_projects/my_app/lib/abilities.ex.
, wenn ich meine abilities.ex merken Um diese Funktion:
def can?(user, action, nil) do
IO.puts "check ability for nil"
false
end
Wenn die Ressource nicht gefunden wird, werde ich genannt
handle_unauthorized sein, wenn ich nur verlassen
def can?(user, action, operation = %Operation{}) when action in [:show, :update, :delete] do
Dann werde ich einen Fehler haben
(FunctionClauseError) no function clause matching in Canada.Can.MyApp.User.can?/3
Ich verstehe nicht, wie ich eine Funktion für diesen Fall
Upd schreiben müssen: volle Fehlermeldung:
[error] #PID<0.427.0> running MyApp.Endpoint terminated
Server: localhost:4000 (http)
Request: GET /api/v1/operations/11
** (exit) an exception was raised:
** (RuntimeError) Unimplemented authorization check for User! To fix see below...
Please implement `can?` for User in /home/mars/phoenix_projects/my_app/lib/abilities.ex.
The function should match:
subject: %MyApp.User{__meta__: #Ecto.Schema.Metadata<:loaded, "users">, operations: [%MyApp.Operation{__meta__: #Ecto.Schema.Metadata<:loaded, "operations">, balance: 1.3e3, categories: #Ecto.Association.NotLoaded<association :categories is not loaded>, id: 1, inserted_at: ~N[2017-04-15 15:00:38.727984], name: "new name", updated_at: ~N[2017-04-15 15:45:08.860944], users: #Ecto.Association.NotLoaded<association :users is not loaded>}, %MyApp.Operation{__meta__: #Ecto.Schema.Metadata<:loaded, "operations">, balance: 0.0, categories: #Ecto.Association.NotLoaded<association :categories is not loaded>, id: 2, inserted_at: ~N[2017-04-15 15:00:59.396742], name: "test1", updated_at: ~N[2017-04-15 15:00:59.396747], users: #Ecto.Association.NotLoaded<association :users is not loaded>}, %MyApp.Operation{__meta__: #Ecto.Schema.Metadata<:loaded, "operations">, balance: 0.0, categories: #Ecto.Association.NotLoaded<association :categories is not loaded>, id: 3, inserted_at: ~N[2017-04-15 15:01:56.845078], name: "test0", updated_at: ~N[2017-04-15 15:01:56.845085], users: #Ecto.Association.NotLoaded<association :users is not loaded>}, %MyApp.Operation{__meta__: #Ecto.Schema.Metadata<:loaded, "operations">, balance: 0.0, categories: #Ecto.Association.NotLoaded<association :categories is not loaded>, id: 4, inserted_at: ~N[2017-04-15 15:04:25.647952], name: "testtt", updated_at: ~N[2017-04-15 15:04:25.647958], users: #Ecto.Association.NotLoaded<association :users is not loaded>}], confirmation_token: nil, confirmed: false, id: 1, inserted_at: ~N[2017-04-15 14:58:48.263515], login: "test user0", password: nil, password_confirmation: nil, password_hash: "$2b$12$8yt6WNBt5hyxZE1MqiZtX.YRuReOuy4zom1imQvK2Q.Dw6pc8iNSG", reset_password_token: nil, sessions: #Ecto.Association.NotLoaded<association :sessions is not loaded>, updated_at: ~N[2017-04-15 14:58:48.268564]}
action: show
resource: nil
(my_app) lib/abilities.ex:43: Canada.Can.MyApp.User.can?/3
(canary) lib/canary/plugs.ex:214: Canary.Plugs.do_authorize_resource/2
(canary) lib/canary/plugs.ex:187: Canary.Plugs.authorize_resource/2
(canary) lib/canary/plugs.ex:274: Canary.Plugs.do_load_and_authorize_resource/2
(my_app) web/controllers/v1/operation_controller.ex:1: MyApp.V1.OperationController.phoenix_controller_pipeline/2
(my_app) lib/my_app/endpoint.ex:1: MyApp.Endpoint.instrument/4
(my_app) lib/phoenix/router.ex:261: MyApp.Router.dispatch/2
(my_app) web/router.ex:1: MyApp.Router.do_call/2
(my_app) lib/my_app/endpoint.ex:1: MyApp.Endpoint.phoenix_pipeline/1
(my_app) lib/plug/debugger.ex:123: MyApp.Endpoint."call (overridable 3)"/2
(my_app) lib/my_app/endpoint.ex:1: MyApp.Endpoint.call/2
(plug) lib/plug/adapters/cowboy/handler.ex:15: Plug.Adapters.Cowboy.Handler.upgrade/4
(cowboy) /home/mars/phoenix_projects/my_app/deps/cowboy/src/cowboy_protocol.erl:442: :cowboy_protocol.execute/4
Können Sie die vollständige Fehlermeldung posten? Es sollte auch die tatsächlichen Werte von Subjekt, Aktion und Ressource drucken, was dazu beitragen würde, diese Frage klarer zu machen. – Dogbert
@Dogbert, hinzugefügt –
Es ist eine Weile her, seit ich Canary verwendet habe. Ich würde vorschlagen, dass Sie versuchen, "wahr" für eine Null-Ressource zurückzugeben. Ich glaube, dass dies den nicht gefundenen Code ausführen lässt. Überprüfen Sie das Gerät der [Canary Plugs] (https://github.com/cpjk/canary/blob/master/lib/canary/plugs.ex) für weitere Informationen. –