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Скачать или смотреть (39) What is Mass Fillable Assignment in Laravel | How to Solve Mass Fillable Assignment error

  • Career Development Lab
  • 2022-05-09
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(39) What is Mass Fillable Assignment in Laravel | How to Solve Mass Fillable Assignment error
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Описание к видео (39) What is Mass Fillable Assignment in Laravel | How to Solve Mass Fillable Assignment error

Understanding Mass Assignment in Laravel Eloquent ORM

Laravel Eloquent ORM provides a simple API to work with database. It is an implementation of Active Record pattern. Each database table is mapped to a Model class which is used for interacting with that table.

Mass Assignment
Let's break down this word.

Mass means large number
Assignment means the assignment operator in programming
In order to make developers life easier, Eloquent ORM offers Mass Assignment functionality which helps them assign(insert) large number of input to database.

Life, without Mass Assignment 😩
Let's consider that there is a form with 10 fields of user information.

We are assigning each input manually to our model and then saving to database.

What if there was a way to insert all the coming input without the manual assignment?

Life, with Mass Assignment 🥳
Laravel Eloquent ORM provides a create method which helps you save all the input with single line.

How cool is that, right? 🤓 With single line we are saving all input to database. In future, if we add more input fields in our HTML form, we don't need to worry about our saving to database part.

Input fields name attribute must match the column name in our database.

Potential Vulnerability
For the sake of understanding, let's consider that we have an is_admin column on users table with true / false value.

A malicious user can inject their own HTML, a hidden input as below:

With Mass Assignment, is_admin will be assigned true and the user will have Admin rights on website, which we don't want 😡

Avoiding the vulnerability
There are two ways to handle this.

We can specify (whitelist) which columns can be mass assigned.
Laravel Eloquent provides an easy way to achieve this. In your model class, add $fillable property and specify names of columns in the array like below:

Any input field other than these passed to create() method will throw MassAssignmentException.

We can specify ( blacklist ) which columns cannot be mass assigned.
You can achieve this by adding $guarded property in model class.

All columns other than is_admin will now be mass assignable.

You can either choose $fillable or $guarded but not both.

So there you have it. Happy Mass Assigning with Laravel Eloquent

Laravel series goal:
My goal with this Laravel series is to create a guide for those just learning Laravel. This guide will take you from the very beginning of an idea into a real deployable application.

Do you want to get learn more about the laravel, let's take eye on given below series.

Stripe Integration with Laravel cashier
   • Laravel Tips  
Laravel step by step guide
   • Laravel step by step guide  
Laravel Advance series
   • Laravel Advance Features  
Laravel Multi role authentication
   • Laravel Multi Role Authentication  
Laravel fullCalendar js series
   • FullCalendar js in Laravel  
Laravel Solutions series
   • Laravel Solutions  

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