Laravel best method for Rest API

I have a blog Application. I want to understand the best way to write API.

• Controllers: BlogController, ImageController, TagController, UserController.
• Model: Blog, User, Image, Tag
• Relationship: User has many blogs, Blog has many tags, Blog has one Image

API

post:user/{id}/blogs, BlogController@save    

• Method 1: Use Blog, Image and Tag Model inside BlogController and save them from inside BlogController itself
• Method 2: Use Blog Model only inside BlogController and write function to save Image and Tag inside Blog Model and call those methods from BlogController.

• Method 3: Use Blog Model only and call internal APIs to save Image and Tag Data (using dingo in laravel)

  1. post:user/{id}/blogs, BlogController@save
  2. post:blogs/{id}/images, ImageController@save
  3. post:blogs/{id}/tags, TagController@save

• Method 4: Call three consecutive different API call from client to save Blog, tag and Image. (It will increase a lot of server load)

  1. post:user/{id}/blogs, BlogController@save
  2. post:blogs/{id}/images, ImageController@save
  3. post:blogs/{id}/tags, TagController@save

Basically I want to know the best way to create APIs. Advice

via Chebli Mohamed