demo

Route::get('/search-patients', 'PatientController@searchPatients');

public function searchPatients(Request $request)
{
    $mobile = $request->input('mobile');

$patients = Patient::where('mobile', $mobile)->get();

return response()->json($patients);
}

<input type="text" id="mobileSearch" placeholder="Search by Mobile Number">
<select name="patient_id" id="patientDropdown" class="form-select" aria-label="Default select example" required>
    <option hidden value="">Choose ...</option>
</select>

// Perform an AJAX request to the search endpoint
            $.ajax({
                url: '/search-patients',
                type: 'GET',
                data: { mobile: mobile },
                success: function (data) {
                    // Clear existing options
                    $('#patientDropdown').empty();

// Populate the dropdown with search results
                    data.forEach(function (patient) {
                        $('#patientDropdown').append('<option value="' + patient.id + '">' + patient.name + ' - ' + patient.id + ' - ' + patient.mobile + '</option>');
                    });
                }
            });
        });
    });
</script>