Super simple galleries on Sanity.io

schemas.js

/*

$ sanity init
# Follow steps, choose the clean template
# go to schemas/schema.js and paste this in
*/

// First, we must import the schema creator
import createSchema from 'part:@sanity/base/schema-creator'

// Then import schema types from any plugins that might expose them
import schemaTypes from 'all:part:@sanity/base/schema-type'

// Then we give our schema to the builder and provide the result to Sanity
export default createSchema({
  // We name our schema
  name: 'default',
  // Then proceed to concatenate our document type
  // to the ones provided by any plugins that are installed
  types: schemaTypes.concat([{
    name: 'gallery',
    type: 'document',
    title: 'Gallery',
    fields: [
      {
        name: 'images',
        type: 'array', // supports drag'n'drop of multiple files
        options: {
          layout: 'grid'
        },
        of: [{
          type: 'image'
        }]
      }
    ]
  },
  /* More types here! */ 
])
})

Thank you soo soo much