Routing can also be set individually. However, since the seven basic actions in rails are often used during development, It is not efficient to set it each time. In such a case, if you use the resources method, the routing will be set automatically just by writing one line.
Rails.application.routes.draw do resources :blogs end
Check with the rails routes command.
$ rails routes
Make sure all urls are set.
$ rails routes Prefix Verb URI Pattern Controller#Action blogs GET /blogs(.:format) blogs#index POST /blogs(.:format) blogs#create new_blog GET /blogs/new(.:format) blogs#new edit_blog GET /blogs/:id/edit(.:format) blogs#edit blog GET /blogs/:id(.:format) blogs#show PATCH /blogs/:id(.:format) blogs#update PUT /blogs/:id(.:format) blogs#update DELETE /blogs/:id(.:format) blogs#destroy rails_service_blob GET /rails/active_storage/blobs/:signed_id/*filename(.:format) active_storage/blobs#show rails_blob_representation GET /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show rails_disk_service GET /rails/active_storage/disk/:encoded_key/*filename(.:format) active_storage/disk#show update_rails_disk_service PUT /rails/active_storage/disk/:encoded_token(.:format) active_storage/disk#update rails_direct_uploads POST /rails/active_storage/direct_uploads(.:format) active_storage/direct_uploads#create