snapshot design for rails's ActiveRecord model

create_snap_shots.rb

class CreateSnapShots < ActiveRecord::Migration[5.0]
  def change
    create_table :snap_shots do |t|
      t.integer :user_id
      t.string :table_name
      t.text :table_data , limit: 4294967295
      t.integer :table_id
      t.integer :snapshot_id

      t.timestamps
    end
    add_index :snap_shots, :user_id
    add_index :snap_shots, :table_name
    add_index :snap_shots, :table_id
    add_index :snap_shots, :snapshot_id
  end
end

class SnapShotsService < ApplicationService
  def self.create!(user_id, table_name, table_id, table_data, snapshot_id)
    SnapShot.create!({
        user_id: user_id,
        table_name: table_name,
        table_id: table_id,
        table_data: table_data,
        snapshot_id: snapshot_id
    })
  end
end

table_id actually is the record_id of the target table.
snapshot_id is the index of all relations of the snapshotted models.