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    • Configure environment variables
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    • Dwolla integration
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    • Override the count route
    • Make a field readOnly with Sequelize
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    • Track users’ logs with morgan
    • Search on relationship fields by default
    • Export related data as CSV
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  • Requirements
  • How it works
  • Directory: /models

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  1. How to's

Make a field readOnly with Sequelize

PreviousOverride the count routeNextHubspot integration

Last updated 4 years ago

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Sequelize does not allow by itself to define a field as readOnly. But you can do so by using on of Sequelize's addons named .

Requirements

  • An admin backend running on forest-express-sequelize

How it works

Directory: /models

This directory contains the files where your models are defined with Sequelize. To make fields readOnly you need to require the sequelize-noupdate-attributes package and add the noUpdate option to the relevant fields.

The noUpdate option will throw an error if the user tries to update a field that already has a value. However the user will be able to update a field that has a null value.

models/users.js
const sequelizeNoUpdateAttributes = require('sequelize-noupdate-attributes');

module.exports = (sequelize, DataTypes) => {
  const { Sequelize } = sequelize;
  sequelizeNoUpdateAttributes(sequelize);
  
  const Users = sequelize.define('users', {
    firstName: {
      type: DataTypes.STRING,
      noUpdate: true,
    },
    lastName: {
      type: DataTypes.STRING,
      noUpdate: true,
    },
    email: {
      type: DataTypes.STRING,
    },
  }, {
    tableName: 'users',
    underscored: true,
    timestamps: false,
    schema: process.env.DATABASE_SCHEMA,
  });

  return Users;
};

npm package

sequelize-noupdate-attributes
sequelize-noupdate-attributes
the LastName field is readOnly in Sequelize but not the email field