npm i @sanity/cli -g

sanity login

mkdir my-blog-contents

cd my-blog-contents

sanity init

sanity start

sanity deploy

// schemas/author.js

export default {
  name: "author",
  title: "Author",
  type: "document",
  fields: [
    {
      name: "name",
      title: "Name",
      type: "string",
      validation: (Rule) => Rule.required(),
    },
    {
      name: "role",
      title: "Role",
      type: "string",
    },
    {
      name: "image",
      title: "Image",
      type: "image",
      options: {
        hotspot: true,
      },
      validation: (Rule) => Rule.required(),
    },
  ],
  preview: {
    select: {
      title: "name",
      media: "image",
    },
  },
};

*[_type == 'home'][0]{'mainPostUrl': mainPost -> slug.current}

*[_type == 'post']{
  title, 
  subtitle, 
  createdAt, 
  'content': content[]{
  	...,
  	...select(_type == 'imageGallery' => {'images': images[]{..., 'url': asset -> url}})
	},
  'slug': slug.current,
  'thumbnail': {
    'alt': thumbnail.alt,
    'imageUrl': thumbnail.asset -> url
  },
  'author': author -> {
    name,
    role,
    'image': image.asset -> url
  },
  'tag': tag -> {
    title,
    'slug': slug.current
  }
}