When updating password I am getting error in Laravel - ajax

Question

I am trying to update a user password, but I am getting an error.
Syntax error or access violation: 1064 You have an error in your SQL
syntax; 'where name is null' at line 1 (SQL: update users set
where name is null)
Controller
public function passwordupdate(Request $request, $id)
{
$user = User::find($id);
$user->password = Hash::make($request->password);
$user->save();
return response()->json([
'msg' => 'Password has been Updated',
]);
}
Route
Route::post('teachers/policy', 'UsersController#passwordupdate')
From the view, I am sending the user id and name to the controller through an Ajax request.
Ajax
$('.update-password').on('click', function (e) {
let user_id = $('#update-password').val();
console.log('Update password clicked!')
e.preventDefault();
$.ajax({
type: "POST",
dataType: 'json',
data: $(this).serialize(),
url: "/users/" + $('#update-password').attr("value"),
headers: {
'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
},
success: function (data) {
if (data.msg) {
$('#response').empty();
$(".toast").toast('show');
$('#response').append(data.msg);
}
}
});
});
View
<form id="password-form">
<input type="hidden" value="">
<table>
<tr>
<td class="text-nowrap">
<select name="name" id="username" class="form-control border border-secondary border-dark" required>
<option selected value="">SELECT USER</option>
#foreach($users as $user)
<option value="{{ $user->name }}"> {{ $user->name }}</option>
#endforeach
</select>
</td>
<td class="text-nowrap">
<input type="text" name="password" placeholder="Type Password"
class="form-control border border-secondary border-dark">
</td>
<td class="text-nowrap">
<button type="submit" class="btn btn-danger btn-sm update-password rounded text-center"
value="{{ $user->id }}" id="update-password">
<span class="fa fa-key"> </span> UPDATE PASSWORD
</button>
</td>
</tr>
</table>
</form>

Answer 1

Change id 'update-password' to 'update_password'
Ids should not contain dash(-)

Answer 2

You are accessing this endpoint :
/users/" + $('#update-password').attr("value")
But there is no $id as a url parameter in this endpoint, so you don't retrieve your User
What could work to get the current logged in users details is:
Auth::user()->id;
Auth class will return you the current logged in user details

Answer 3

i think you should try this
$('#update-password').val()
make sure that id "update-password" place in your input type["password"]
hope answer your question