I'm using this to flash error messages within my UserController (using Toastr);
public function update(Request $request)
{
$validator = Validator::make($request->all(), [
'name' => 'required|max:200',
'email' => 'required|email|unique:users,email,'. Auth::id(),
'phone' => 'alpha_num|nullable|min:8',
]);
if ($validator->fails()) {
Toastr::error('Changes not saved', 'Error');
return back();
}
$user = Auth::user();
$user->name = $request->input('name');
$user->email = $request->input('email');
$user->phone = $request->input('phone');
$user->save();
Toastr::success('Changes saved', 'OK');
return back();
}
I would like to use Form Request for my validation, but keep running into problems when trying to flash (toastr) error messages.
Do one of you have an example of toastr used with Form Request? I have read the documentation like 10 times, but can't find a solution :(
https://laravel.com/docs/5.7/validation
This used to work about a year ago, but not anymore:
# Error messages
protected function formatErrors(Validator $validator)
{
$messages = $validator->messages();
foreach ($messages->all() as $message)
{
Toastr::error($message, 'Fejl');
}
return $validator->errors()->all();
}
Use withValidator() in your form request
but I am using toaster package from yoeunes/toastr
public function withValidator($validator)
{
$messages = $validator->messages();
foreach ($messages->all() as $message)
{
toastr()->error ( $message, 'Error');
}
return $validator->errors()->all();
}
It works for me in Laravel 7.x
Try that, thanks!
I have been trying to update the handicap score using a post request. But I seem to get an error saying : creating default object from empty value.
Code :
public function handicap(Request $request)
{
$user = Auth::user();
$rules = array(
'handicap' => 'required'
);
$validator = Validator::make(Input::all(), $rules);
// process the login
if ($validator->fails())
{
return response()->json(['msg' => 'Failed to update Handicap score!'], 200);
}
else {
if(Handicap::where('user_id', '=', $user->id)->exists())
{
$handicap = Handicap::find($user->id);
$handicap->user_id = $user->id;
$handicap->handicap = $request->input('handicap');
$handicap->save();
return response()->json(['msg' => 'You have successfully updated your handicap score!'], 200);
}
else
{
$handicap = new Handicap;
$handicap->user_id = $user->id;
$handicap->handicap = $request->input('handicap');
$handicap->save();
return response()->json(['msg' => 'You have added your handicap score successfully!'], 200);
}
}
}
If user does not exist in Handicap table then the else block code runs and creates a handicap score for the user else the if block needs to execute and update the score. I tried many alternatives but dont seem to get it working. Dont know what am I doing wrong.
I checked the $user, $handicap variables using return. those variables have the info that I need to add to the table. Its just that Its not updating.
Your problem probably comes from the line you have Handicap::find($user->id). Obviously it's null, because such model was not found, even though your if statement returns true.
In your if statement you have where('user_id' , '=', $user->id), but you are using Handicap::find($user->id) which is basically Handicap::where('id', '=', $user->id)->first().
Try changing it to:
$handicap = Handicap::where('users_id', '=', $user->id)->first();
You may give this a try:
public function handicap(Request $request)
{
$validator = Validator::make(Input::all(), [
'handicap' => 'required'
]);
// process the login
if ($validator->fails()) {
return response()->json(['msg' => 'Failed to update Handicap score!'], 200);
}
$handicap = Handicap::firstOrNew([
'user_id' => $request->user()->id;
]);
$handicap->user_id = $request->user()->id;
$handicap->handicap = $request->handicap;
$handicap->save();
return response()->json(['msg' => 'You have successfully updated your handicap score!'], 200);
}
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?
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
}
if (User::where('email', Input::get('email'))->exists()) {
// exists
}
In laravel eloquent, has default exists() method, refer followed example.
if (User::where('id', $user_id )->exists()) {
// your code...
}
One of the best solution is to use the firstOrNew or firstOrCreate method. The documentation has more details on both.
if($user->isEmpty()){
// has no records
}
Eloquent uses collections.
See the following link: https://laravel.com/docs/5.4/eloquent-collections
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
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.
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.
This will check if requested email exist in the user table:
if (User::where('email', $request->email)->exists()) {
//email exists in user table
}
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
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 $user;
}
It seems like it runs double query if the user is found, but I can't seem to find any other reliable solution.
if ($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
$email = User::find($request->email);
If($email->count()>0)
<h1>Email exist, please make new email address</h1>
endif
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);
}
I solved this, using empty() function:
$user = User::where('email', Input::get('email'))->get()->first();
//for example:
if (!empty($user))
User::destroy($user->id);
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
$user = User::where('email', request('email'))->first();
return (count($user) > 0 ? 'Email Exist' : 'Email Not Exist');
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
}
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();
$user = User::where('email', '=', Input::get('email'))->first();
if ($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.
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
}
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!
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!');
}
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.');
}
}
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
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());
$userCnt = User::where("id",1)->count();
if( $userCnt ==0 ){
//////////record not exists
}else{
//////////record exists
}
Note :: Where condition according your requirements.
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();
}
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...
}
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";
I got a problem when trying to redirect back with some results from my sql.
I got a function:
public function postSearch() {
$validator = Validator::make(Input::all(), array(
'search' => 'required'
)
);
if($validator->fails()) {
return Redirect::route('search')
->withErrors($validator)
->withInput();
} else {
$search = Input::get('search');
$user = User::where('username', 'like', '%' . $search . '%')->get();
if($user->count() >= 1) {
return Redirect::route('search')
->with('user', $user)
->withInput();
} else {
return Redirect::route('search')
->with('global', 'Could not find user.')
->withInput();
}
}
return Redirect::route('search')
->with('global', 'Something went wrong, try again later.');
}
but when select was successful in other my file with this code:
#foreach ($user as $users)
<p>
$users->username;
</p>
#endforeach
i got exception undefined user variable. But when i trying to search what doesnt exists in table, 'global' attribute showing my message.
Any ideas why is that not working?
Well, your error is just fine. The $user variable is not defined so you can't iterate over it.
There are 2 things you can do. In your view, you can check if the variable is set
#if (isset($user)
#foreach ($user as $users)
{{ $user->name }}
#endforeach
#endif
You can also set a default value on your code, but you will also need to always your variable to the view. For example:
$user = array();
return Redirect::route('search')
->with('user', $user)
->with('global', 'Could not find user.')
->withInput();
// you will need the $user on your last redirect too
This should fix your problem.