how to validate Unique database field on Controller in laravel - laravel

Question

Good Day, I am new in Laravel environment. I am developing a simple school enrollment registration website but having trouble in validation on my controller..
My plan is, when the user will register in the website, username textbox should be validated if the username is already used by other student. i tried every possible tutorial i found in the net but i have no luck...
Here is my page, red circle should be validated if the input username already exist in the database..
Whole code in .blade
<!--Registration start here -->
<form method="Post" action="{{url('store_account_Registration')}}">
#csrf
#if(Session::get('success'))
<div class="alert alert-danger">
{{ Session::get('success')}}
</div>
#endif
#if(Session::get('fail'))
<div class="alert alert-danger">
{{ Session::get('fail')}}
</div>
#endif
<div class="col-sm-12 form-group">
<input type="hidden" class="form-control" name="uniqID3" id="uid" placeholder="Enrollment Registration Number" value="{{ $regid3 }}" >
</div>
<div class="col-sm-12 form-group">
<input type="hidden" class="form-control" name="pfulname3" id="name-f" placeholder="Enrollment Registration Number" required value="{{ $fulname4 }}" >
</div>
<div class="container-fluid" style="margin-bottom: 2em">
<div class="row justify-content-center align-items-center" style="padding: 10px">
<div class="card col-md-5" style="transform: none;>
<div class="card-body">
<div class="alert alert-primary" role="alert" style="margin-top: 1em">
<p>Name: <strong>{{ $fulname4 }}</strong></p>
<p>Enrollment No.: <strong>{{ $regid3 }}</strong></p>
</div>
<input type="hidden" class="hide" id="csrf_token" name="csrf_token" value="C8nPqbqTxzcML7Hw0jLRu41ry5b9a10a0e2bc2">
<div class="row">
<div class="col-md-12">
<div class="form-group">
<label>Username</label>
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text"><i class="fa fa-user" aria-hidden="true"></i></span>
</div>
<input type="text" class="form-control" name="username" id="username" placeholder="Username" required value="{{ old('username')}}" >
</div>
<div class="help-block with-errors text-danger">
<span style="color:red">#error('username'){{ $message}}#enderror</span>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div class="form-group">
<label>Password</label>
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text"><i class="fa fa-lock" aria-hidden="true"></i></span>
</div>
<input type="password" id="password" name="password" pattern="^\S{6,}$" onchange="this.setCustomValidity(this.validity.patternMismatch ? 'Must have at least 6 characters' : ''); if(this.checkValidity()) form.password_two.pattern = this.value;" class="form-control" title="Password is needed" required placeholder="Password" >
</div>
<div class="help-block with-errors text-danger">
<span style="color:red">#error('password'){{ $message}}#enderror</span>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div class="form-group">
<label>Confirm Password</label>
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text"><i class="fa fa-lock" aria-hidden="true"></i></span>
</div>
<input id="password_two" type="password" name="password_two" pattern="^\S{6,}$" onchange="this.setCustomValidity(this.validity.patternMismatch ? 'Please enter the same Password as above' : '');" placeholder="Confirm Password" class="form-control" title="Confirm Password is needed" required placeholder="Confirm Password" >
</div>
<div class="help-block with-errors text-danger">
<span style="color:red">#error('password_two'){{ $message}}#enderror</span>
</div>
</div>
</div>
</div>
<div class="row" style="margin-top: 1em" >
<div class="col-md-12" style="margin-bottom: 2em">
<input type="hidden" name="redirect" value="">
<!-- <button type="submit" class="btn btn-primary btn-lg btn-block" name="submit">Save OASIS Account</button> -->
<!-- < <p class="btn btn-primary btn-lg btn-block">Save OASIS Account</p> -->
<button type="submit" class="btn btn-primary btn-lg btn-block">Save OASIS Account</button>
</div>
</div>
</div>
</div>
</div>
</div>
<!--Registration start here -->
</div>
</form>
enter code here
I always got this error..
Here is my code..
my validation in my controller
public function store_account_Registration(Request $request)
{
request()->validate([
'username' => 'required|min:6|unique:TempAccount,AccountName,'
]);
// $this->validator($request->all())->validate();
$current_date = date('Y-m-d H:i:s');
$query = DB::table('TempAccount')->insert([
'RegID'=>$request->input('uniqID3'),
'FullName'=>$request->input('pfulname3'),
'AccountName'=>$request->input('username'),
'Pass'=>$request->input('password'),
'created_at'=> $current_date,
'updated_at'=> $current_date,
]);
if($query){
return back()->with('success', 'Data has been Successfyll inserted');
// return view('pages.enrollment_success');
// return redirect()->route('pages.enrollment_GradeLevelSchoolInfo', ['uniqIDd' => 1]);
// return redirect('enrollment_GradeLevelSchoolInfo');
}
else
{
return back()->with('fail', 'something went wrong');
}
}
my Route in web.php
Route::get('pages',[accountregistration::class, 'index']);
Route::Post('store_account_Registration', [accountregistration::class, 'store_account_Registration']);
my action in form..

Answer 1

The issue is in your form. You are not reaching the correct route at all.
Also you are missing the #csrf token or at least not shown in your print screen
<form action="{{url('store_account_Registration')}}" method="POST">
#csrf
In your validation you can remove the trailing coma after AccountName as well.