Cannot rake migration for my ruby project - ruby-on-rails

Question

When I try to rake a migration for my ruby project, it gives me an error "'API::sessions' is not a supported controller name". Does anyone know how to solve this problem? The following code is from my routes.rb file and sessions_controller.rb file.
Rails.application.routes.draw do
get 'projects/:id', to: 'projects#show'
get 'projects', to: 'projects#index'
get 'welcome/index'
root 'welcome#index'
match '/login', to: 'sessions#new', via: :get
match '/login_create', to: 'sessions#create', via: :post
resources :users
scope :format => true, :constraints => { :format => 'json' } do
post "/api/login" => "API::sessions#create"
delete "/api/logout" => "API::sessions#destroy"
end
end
class API::SessionsController < API::ApiController
skip_before_action :require_login, only: [:create], raise: false
def create
if user = User.valid_login?(params[:email], params[:password])
allow_token_to_be_used_only_once_for(user)
send_auth_token_for_valid_login_of(user)
else
render_unauthorized("Error with your login or password")
end
end
def destroy
logout
head :ok
end
private
def send_auth_token_for_valid_login_of(user)
render json: { token: user.token }
end
def allow_token_to_be_used_only_once_for(user)
user.regenerate_token
end
def logout
current_user.invalidate_token
end
end

Answer 1

The error appears when you define the post and delete routes within the format scope, to tell Rails which controller and action/method use for the URI being defined.
To refer then the controller name and action use the lowercase name followed by a slash, instead the uppercase controller name and colons ::, like:
post '/api/login' => 'api/sessions#create'
delete '/api/logout' => 'api/sessions#destroy'