问题
Here is my initializers/devise.rb code for Facebook:
require "omniauth-facebook"
config.omniauth :facebook, "app_key", "app_secret"
And I have added:
devise :omniauthable into the model I want to be able to use Facebook with.
When I click on this link:
<%= link_to "Sign in with Facebook", user_omniauth_authorize_path(:facebook) %>
I get:
An OAuthException with message: "message": "Missing client_id parameter.",
Notice that the app_key and app_secret are the ones that I can see on my Facebook app but I haven't put here.
On the URL that is redirected when clicking the Sign in with facebook link I see that the client_id parameter is empty:
https://graph.facebook.com/oauth/authorize?response_type=code&client_id&
But why?
回答1:
I have never done it directly with devise. But this also works well with devise.
Omniauth podcast on RailsCasts
Alternatively, If you still want to stick with using devise built-in omiauth, try to find a way to provide it the app id and app secret. I'm pretty sure that you have to provide it in devise.rb in config/initializers/
回答2:
Add this in your devise.rb file
require "omniauth-facebook"
config.omniauth :facebook, "APP_ID", "APP_SECRET"
Dont forget to restart your app for the changes to take place.
来源：https://stackoverflow.com/questions/10891811/missing-client-id-with-devise-and-facebook-omniauth