school-platform/config/routes.rb

Rails.application.routes.draw do
  root 'sessions#new'

  get '/home', to: 'static_pages#home'
  get '/about', to: 'static_pages#about'

  get    '/login',   to: 'sessions#new'
  post   '/login',   to: 'sessions#create'
  delete '/logout',  to: 'sessions#destroy'

  resources :users do
    member do
      get :courses
    end
  end
  resources :conversations
  resources :conversation_participations
  resources :messages
  resources :schools
  resources :courses
  resources :course_participations
  resources :lectures
  resources :assignments do
    resources :submissions, shallow: true
  end
end