Laravel Checking If a Record Exists - php

Question

I am new to Laravel. How do I find if a record exists?
$user = User::where('email', '=', Input::get('email'));
What can I do here to see if $user has a record?

Answer 1

It depends if you want to work with the user afterwards or only check if one exists.
If you want to use the user object if it exists:
$user = User::where('email', '=', Input::get('email'))->first();
if ($user === null) {
// user doesn't exist
}
And if you only want to check
if (User::where('email', '=', Input::get('email'))->count() > 0) {
// user found
}
Or even nicer
if (User::where('email', '=', Input::get('email'))->exists()) {
// user found
}

Answer 2

if (User::where('email', Input::get('email'))->exists()) {
// exists
}

Answer 3

In laravel eloquent, has default exists() method, refer followed example.
if (User::where('id', $user_id )->exists()) {
// your code...
}

Answer 4

One of the best solution is to use the firstOrNew or firstOrCreate method. The documentation has more details on both.

Answer 5

if($user->isEmpty()){
// has no records
}
Eloquent uses collections.
See the following link: https://laravel.com/docs/5.4/eloquent-collections

Answer 6

Laravel 5.6.26v
to find the existing record through primary key ( email or id )
$user = DB::table('users')->where('email',$email)->first();
then
if(!$user){
//user is not found
}
if($user){
// user found
}
include " use DB " and table name user become plural using the above query like user to users

Answer 7

if (User::where('email', 'user#email.com')->first()) {
// It exists
} else {
// It does not exist
}
Use first(), not count() if you only need to check for existence.
first() is faster because it checks for a single match whereas count() counts all matches.

Answer 8

It is a bit late but it might help someone who is trying to use User::find()->exists() for record existence as Laravel shows different behavior for find() and where() methods. Considering email as your primary key let's examine the situation.
$result = User::find($email)->exists();
If a user record with that email exists then it will return true. However the confusing thing is that if no user with that email exists then it will throw an error. i.e
Call to a member function exists() on null.
But the case is different for where() thing.
$result = User::where("email", $email)->exists();
The above clause will give true if record exists and false if record doesn't exists. So always try to use where() for record existence and not find() to avoid NULL error.

Answer 9

This will check if requested email exist in the user table:
if (User::where('email', $request->email)->exists()) {
//email exists in user table
}

Answer 10

In your Controller
$this->validate($request, [
'email' => 'required|unique:user|email',
]);
In your View - Display Already Exist Message
#if (count($errors) > 0)
<div class="alert alert-danger">
<ul>
#foreach ($errors->all() as $error)
<li>{{ $error }}</li>
#endforeach
</ul>
</div>
#endif

Answer 11

Checking for null within if statement prevents Laravel from returning 404 immediately after the query is over.
if ( User::find( $userId ) === null ) {
return "user does not exist";
}
else {
$user = User::find( $userId );
return $user;
}
It seems like it runs double query if the user is found, but I can't seem to find any other reliable solution.

Answer 12

if ($u = User::where('email', '=', $value)->first())
{
// do something with $u
return 'exists';
} else {
return 'nope';
}
would work with try/catch
->get() would still return an empty array

Answer 13

$email = User::find($request->email);
If($email->count()>0)
<h1>Email exist, please make new email address</h1>
endif

Answer 14

Simple, comfortable and understandable with Validator
class CustomerController extends Controller
{
public function register(Request $request)
{
$validator = Validator::make($request->all(), [
'name' => 'required|string|max:255',
'email' => 'required|string|email|max:255|unique:customers',
'phone' => 'required|string|max:255|unique:customers',
'password' => 'required|string|min:6|confirmed',
]);
if ($validator->fails()) {
return response(['errors' => $validator->errors()->all()], 422);
}

Answer 15

I solved this, using empty() function:
$user = User::where('email', Input::get('email'))->get()->first();
//for example:
if (!empty($user))
User::destroy($user->id);

Answer 16

you have seen plenty of solution, but magical checking syntax can be like,
$model = App\Flight::findOrFail(1);
$model = App\Flight::where('legs', '>', 100)->firstOrFail();
it will automatically raise an exception with response 404, when not found any related models Sometimes you may wish to throw an exception if a model is not found. This is particularly useful in routes or controllers. The fingernail and firstOrFail methods will retrieve the first result of the query; however, if no result is found, an Illuminate\Database\Eloquent\ModelNotFoundException will be thrown.
Ref: https://laravel.com/docs/5.8/eloquent#retrieving-single-models

Answer 17

$user = User::where('email', request('email'))->first();
return (count($user) > 0 ? 'Email Exist' : 'Email Not Exist');

Answer 18

This will check if particular email address exist in the table:
if (isset(User::where('email', Input::get('email'))->value('email')))
{
// Input::get('email') exist in the table
}

Answer 19

Shortest working options:
// if you need to do something with the user
if ($user = User::whereEmail(Input::get('email'))->first()) {
// ...
}
// otherwise
$userExists = User::whereEmail(Input::get('email'))->exists();

Answer 20

$user = User::where('email', '=', Input::get('email'))->first();
if ($user === null) {
// user doesn't exist
}
can be written as
if (User::where('email', '=', Input::get('email'))->first() === null) {
// user doesn't exist
}
This will return true or false without assigning a temporary variable if that is all you are using $user for in the original statement.

Answer 21

I think below way is the simplest way to achieving same :
$user = User::where('email', '=', $request->input('email'))->first();
if ($user) {
// user exist!
}else{
// user does not exist
}

Answer 22

Created below method (for myself) to check if the given record id exists on Db table or not.
private function isModelRecordExist($model, $recordId)
{
if (!$recordId) return false;
$count = $model->where(['id' => $recordId])->count();
return $count ? true : false;
}
// To Test
$recordId = 5;
$status = $this->isModelRecordExist( (new MyTestModel()), $recordId);
Home It helps!

Answer 23

The Easiest Way to do
public function update(Request $request, $id)
{
$coupon = Coupon::where('name','=',$request->name)->first();
if($coupon->id != $id){
$validatedData = $request->validate([
'discount' => 'required',
'name' => 'required|unique:coupons|max:255',
]);
}
$requestData = $request->all();
$coupon = Coupon::findOrFail($id);
$coupon->update($requestData);
return redirect('admin/coupons')->with('flash_message', 'Coupon updated!');
}

Answer 24

Laravel 6 or on the top: Write the table name, then give where clause condition for instance where('id', $request->id)
public function store(Request $request)
{
$target = DB:: table('categories')
->where('title', $request->name)
->get()->first();
if ($target === null) { // do what ever you need to do
$cat = new Category();
$cat->title = $request->input('name');
$cat->parent_id = $request->input('parent_id');
$cat->user_id=auth()->user()->id;
$cat->save();
return redirect(route('cats.app'))->with('success', 'App created successfully.');
}else{ // match found
return redirect(route('cats.app'))->with('error', 'App already exists.');
}
}

Answer 25

If you want to insert a record in the database if a record with the same email not exists then you can do as follows:
$user = User::updateOrCreate(
['email' => Input::get('email')],
['first_name' => 'Test', 'last_name' => 'Test']
);
The updateOrCreate method's first argument lists the column(s) that uniquely identify records within the associated table while the second argument consists of the values to insert or update.
You can check out the docs here: Laravel upserts doc

Answer 26

You can use laravel validation if you want to insert a unique record:
$validated = $request->validate([
'title' => 'required|unique:usersTable,emailAddress|max:255',
]);
But also you can use these ways:
1:
if (User::where('email', $request->email)->exists())
{
// object exists
} else {
// object not found
}
2:
$user = User::where('email', $request->email)->first();
if ($user)
{
// object exists
} else {
// object not found
}
3:
$user = User::where('email', $request->email)->first();
if ($user->isNotEmpty())
{
// object exists
} else {
// object not found
}
4:
$user = User::where('email', $request->email)->firstOrCreate([
'email' => 'email'
],$request->all());

Answer 27

$userCnt = User::where("id",1)->count();
if( $userCnt ==0 ){
//////////record not exists
}else{
//////////record exists
}
Note :: Where condition according your requirements.

Answer 28

Simply use this one to get true or false
$user = User::where('email', '=', Input::get('email'))->exists();
if you want $user with result you can use this one,
$user = User::where('email', '=', Input::get('email'))->get();
and check result like this,
if(count($user)>0){}
Other wise you can use like this one,
$user = User::where('email', '=', Input::get('email'));
if($user->exists()){
$user = $user->get();
}

Answer 29

The efficient way to check if the record exists you must use is_null method to check against the query.
The code below might be helpful:
$user = User::where('email', '=', Input::get('email'));
if(is_null($user)){
//user does not exist...
}else{
//user exists...
}

Answer 30

It's simple to get to know if there are any records or not
$user = User::where('email', '=', Input::get('email'))->get();
if(count($user) > 0)
{
echo "There is data";
}
else
echo "No data";