使用devise_token_auth和omniauth-twitter，我无法使用Twitter登录

Question

Sending GET request to /auth/twitter , I successfully authenticate with Twitter and redirect to /auth/twitter/callback . But, sending GET request to /api/current_user , api server always return null . And, user_signed_in? always return false I can not know how to sign in with Twitter. I want to get current_user How do I sign in with Twitter? * Version : Rails (API mode) 5.1.6 ruby 2.4.0 routes.rb

Rails.application.routes.draw do
  mount_devise_token_auth_for 'User', at: 'auth', controllers: {
    omniauth_callbacks: "overrides/omniauth_callbacks",
  }
  namespace :api, format: 'json' do
    root 'posts#index'
    get 'current_user', to: 'users#current'
  end
end

omniauth_callbacks.rb

module Overrides
  class OmniauthCallbacksController < DeviseTokenAuth::OmniauthCallbacksController
  def assign_provider_attrs(user, auth_hash)
    all_attrs = auth_hash["info"].slice(*user.attributes.keys)
    orig_val = ActionController::Parameters.permit_all_parameters
    ActionController::Parameters.permit_all_parameters = true
    permitted_attrs = ActionController::Parameters.new(all_attrs)
    permitted_attrs.permit({})
    user.assign_attributes(permitted_attrs)
    ActionController::Parameters.permit_all_parameters = orig_val
    user
  end
  end
end

users_controller.rb

class Api::UsersController < ActionController::API
  def current
    render json: current_user
  end
end

Answer 1

You can try the following solution and modify it as you want

In your omniauth_callbacks_controller.rb should be the following code:

def callback
    @user = User.from_omniauth(request.env['omniauth.auth'])

    if @user.persisted?
      #your code here to set current_user if necessary
    else
      #your code here
    end
end

def twitter
    callback
end

In your user.rb should be the following code:

def self.from_omniauth(auth)
    where(email: auth.info['email'], /add the attributes you want to check/).first_or_create do |user|
      user.password = Devise.friendly_token[0,20]
      #user.name = auth.info.name   # assuming the user model has a name
      #user.image = auth.info.image # assuming the user model has an image
    end
end

Source: https://github.com/plataformatec/devise/wiki/OmniAuth:-Overview