Registration flow in Laravel - Step-by-Step Execution

Concept Flow - Registration flow

User opens registration page

↓

User fills form and submits

↓

Server validates input

↓

Create user

↓

Send welcome

↓

Redirect to login or dashboard

This flow shows how a user registers: opening the form, submitting data, server checks, creating user if valid, or showing errors if not.

Execution Sample

Laravel

<?php
// Controller method
public function register(Request $request) {
  $validated = $request->validate([
    'email' => 'required|email|unique:users',
    'password' => 'required|min:8'
  ]);
  User::create([
    'email' => $validated['email'],
    'password' => bcrypt($validated['password'])
  ]);
  return redirect('/login');
}

This code validates user input, creates a new user if valid, then redirects to login.

Execution Table

Step	Action	Input Data	Validation Result	Database Action	Response
1	User opens registration page	N/A	N/A	N/A	Show registration form
2	User submits form	{email: '[e-mail]', password: 'secret123'}	Pending	N/A	Process submission
3	Validate email and password	{email: '[e-mail]', password: 'secret123'}	Valid	N/A	Proceed
4	Create user record	{email: '[e-mail]', password: 'secret123'}	Valid	Insert user into users table	User created
5	Redirect user	N/A	N/A	N/A	Redirect to /login
6	User submits invalid form	{email: '[e-mail]', password: '123'}	Invalid (password too short)	N/A	Return form with errors
7	Show errors	N/A	N/A	N/A	Display validation messages

💡 Process ends after redirect or showing errors based on validation.

Variable Tracker

Variable	Start	After Step 2	After Step 3	After Step 4	Final
email	null	'[e-mail]'	'[e-mail]'	'[e-mail]'	'[e-mail]'
password	null	'secret123'	'secret123'	'secret123'	'secret123'
validation_result	null	pending	valid	valid	valid
user_created	false	false	false	true	true
response	null	processing	processing	processing	redirect or errors

Key Moments - 3 Insights

Why does the server reject the form if the password is too short?

Because the validation rule 'min:8' requires at least 8 characters. See execution_table row 6 where validation fails and errors are returned.

What happens if the email is already used?

Validation fails due to 'unique:users' rule, so the server returns the form with errors instead of creating a user. This is similar to the invalid case in row 6.

Why do we redirect after successful registration?

Redirecting prevents form resubmission and guides the user to login or dashboard. See row 5 where redirect happens after user creation.

Visual Quiz - 3 Questions

Look at the execution_table, what is the validation result at step 3?

A Invalid

B Pending

C Valid

D Not checked

💡 Hint

Check the 'Validation Result' column at step 3 in execution_table.

At which step does the user record get created in the database?

A Step 4

B Step 3

C Step 2

D Step 5

💡 Hint

Look at the 'Database Action' column to find when the user is inserted.

If the password is too short, what response does the server send?

A Redirect to login

B Show registration form with errors

C Create user anyway

D Ignore the password

💡 Hint

See execution_table rows 6 and 7 for invalid password handling.

Concept Snapshot

Registration flow in Laravel:
- User fills form and submits
- Server validates input (email unique, password length)
- If valid, create user record
- Redirect to login page
- If invalid, return form with error messages
Use $request->validate() for validation and User::create() to save user.

Full Transcript

This visual execution shows the Laravel registration flow. First, the user opens the registration page and fills the form. When submitted, the server validates the email and password. If validation passes, the server creates a new user record in the database and redirects the user to the login page. If validation fails, such as when the password is too short or the email is already used, the server returns the form with error messages so the user can fix the input. Variables like email, password, and validation_result change as the process runs. Key moments include understanding validation rules, why redirection happens, and how errors are handled. The quizzes help check understanding of validation results, database actions, and error responses.