How to do Prisma runtime model validation?

Question

In my application, I have validated the input credential at the DTO level by using class-validator. But I need runtime model validation like sequelize ORM.

In sequelize:

'use strict';
import { DataTypes, Sequelize } from 'sequelize';

function User(sequelize: Sequelize) {
  const user = sequelize.define(
    'User',
    {
      name: {
        type: DataTypes.STRING,
        allowNull: false
      },
      role: {
        type: DataTypes.STRING(20),
        allowNull: false
      },
      email: {
        type: new DataTypes.STRING,
        allowNull: false,
        validate: {
          isEmail: {
            // args: true,
            msg: 'Invalid email'
          },
          len: {
            args: [1, 100] as readonly [number, number],
            msg: 'Email length should be 1 to 100 characters'
          },
          notNull: {
            // args: true,
            msg: 'Email cannot be empty'
          }
        }
      },
      password: {
        type: DataTypes.VIRTUAL,
        allowNull: true,
      },
    },
    {
      tableName: 'users',
      underscored: true,
      createdAt: 'created_at',
      updatedAt: 'updated_at',
      deletedAt: 'deleted_at',
      paranoid: true
    }
  );

  return user;
}
export default User;

Is there any possibility to do model validation in Prisma?

Answer 1

There is an open feature request for Prisma to support runtime model validation directly at the Schema level. Alternatively, you can leverage the Client Extensions to perform validation. There is an example in this blog post that shows how to perform custom runtime validation.