laravel 5.4: how to pass value from javascript to controller for updating data
I am new to laravel. I want to update a database row. For this purpose, i want to pass the id of the corresponding row to the controller from javascript. I can get the id in javascript file from view. But i get an error ( ErrorException in PatientController.php line 80: Creating default object from empty value) while doing this. Because controller does not get that id. How can i pass the id and resolve this problem?
my view (editPatientView.blade.php):
<div class="patient-form-view" data-patientid="{{ $patient->id }}">
<h2>Patient Details</h2>
<form action="{{ route('savepatientinfo') }}" method="post"> {{-- route('postCreate') --}}
<div class="form-group">
<label for="name">Name *</label>
<input class="form-control" id="patient_name" name="patient_name" type="text" value="" id="example-text-input">
</div>
<div class="col-md-6" style="float: left; width: 100%; padding-left: 0px">
<div class="form-group" style="float: left; width: 48%; ">
<label for="age">Age *</label>
<input class="form-control" id="patient_age" name="patient_age" type="text" value="">
</div>
<div class="form-group" style="float: left; width: 48%; margin-left: 22.5px;">
<label for="weight">Weight</label>
<input class="form-control" id="patient_weight" name="patient_weight" type="text" value="">
</div>
</div>
<div class="form-group">
<label for="symptom">Symptoms *</label>
<textarea class="form-control" name="symptom" id="exampleTextarea" rows="3" value="{{ $patient->symptom }}"></textarea>
</div>
<div class="form-group">
<label for="test">Tests (if any)</label>
<textarea class="form-control" name="test" id="exampleTextarea" rows="3" value="{{ $patient->test }}"></textarea>
</div>
<div class="form-group">
<label for="Medicine">Medicine</label>
<textarea class="form-control" name="medicine" id="exampleTextarea" rows="3"></textarea>
</div>
<div class="form-group">
<label for="return-date" class="col-2 col-form-label">Return Date</label>
<input class="form-control" name="return-date" type="date" value="{{ $patient->return_date }}" id="example-date-input">
</div>
<button type="submit" class="btn btn-primary" id="edit">Save</button>
<input type="hidden" name="_token" value="{{ Session::token() }}">
</form>
</div>
<script>
var urlEdit = '{{ route('savepatientinfo') }}';
var token = '{{ Session:: token() }}';
</script>
my script (script.js):
var patientId = 0;
$('#edit').on('click', function (event) {
patientId = event.target.parentNode.parentNode.dataset['patientid'];
alert(patientId);
$.ajax({
method: 'POST',
url : urlEdit,
data: {
patientId: patientId,
_token: token
}
});
});
my route:
Route::post('/savepatientinfo', [
'uses'=> 'PatientController@SavePatientInfo',
'as'=>'savepatientinfo'
]);
my controller():
public function SavePatientInfo(HttpRequest $request)
{
// validation...
$this->validate($request, [
'patient_name'=> 'required|max:2000',
'patient_age'=> 'required',
'symptom'=> 'required',
]);
$patient = Patient::find($request['patientId']) ;
// dd($patient);
$user = Auth::user();
$patient->name = $request['patient_name'];
$patient->age = $request['patient_age'];
$patient->weight = $request['patient_weight'];
$patient->symptom = $request['symptom'];
$patient->test = $request['test'];
$patient->return_date = $request['return-date'];
$patient->user()->associate($user);
$patient->update();
if($request->user()->patients()->save($patient))
{
$message = 'Patient information enrolled successfully' ;
}
return redirect()->route('showpatientinfo', ['user_id'=> $patient->user->id, 'patient_id'=>$patient->id])->with(['message'=>$message]);
}