Checking if column is null Laravel - laravel

Question

I have this column ('time_out') in a table of my database:
As you can see the time_out is null, and when I do this query:
$checkertimeout = Attendance::where('emp_id', $request->emp_id)
->where('attend_date', $date)->get(['time_out']);
I get this output:
[{"time_out":null}]
But when I use it in an if-else statement:
if ($checkertimeout->isEmpty())
{
echo "works";
}
else
{
echo "wont work";
}
It display won't work.
Any help is appreciated, I'm new to Eloquent query :)

Answer 1

First of all, when you do this:
$checkertimeout = Attendance
::where('emp_id', $request->emp_id)
->where('attend_date', $date)
->get(['time_out']); // <---
You are getting a Collection of all the time_out fields of every Attendance models that match your criteria (the wheres). This means, something like this:
=> Illuminate\Database\Eloquent\Collection {#3323
all: [
App\Attendance {#3332
attend_date: "2019-10-06 22:01:29",
},
App\Attendance {#3340
attend_date: "2019-10-06 22:01:29",
},
App\Attendance {#314
attend_date: null,
},
],
}
You can get more info in the Eloquent section of the documentation.
Now, if your query is designed to get only one record, you could use the ->first() method instead of the get() one. This method will return the first Attendance object that matches your criteria.
$checkertimeout = Attendance
::where('emp_id', $request->emp_id)
->where('attend_date', $date)
->first(); // <---
PS: If you only need to retrieve the time_out value, you could also add the ->select('attend_date') to the query:
$checkertimeout = Attendance
->select('time_out'); // <---
::where('emp_id', $request->emp_id)
->where('attend_date', $date)
->first(); // <---
With these clarifications, let's go to your question. If you want to check if a field is null.. you could just make use of the PHP function is_null().
Using the collection
$checkertimeout = Attendance
::where('emp_id', $request->emp_id)
->where('attend_date', $date)
->get(['time_out']);
if(is_null($checkertimeout->first()->time_out))
{
// ...
}
Using a single object
$checkertimeout = Attendance
->select('time_out'); // <---
::where('emp_id', $request->emp_id)
->where('attend_date', $date)
->first(); // <---
if(is_null($checkertimeout->time_out)) // <----
{
// ...
}
Side note
As a side note, if you want to avoid the null results for that value, you could add another contraint in your query:
$checkertimeout = Attendance
::where('emp_id', $request->emp_id)
->where('attend_date', $date)
->whereNotNull('time_out') // <-----
->get(['time_out']);

Answer 2

Hit it
$checkertimeout = Attendance::where('emp_id', $request->emp_id)
->where('attend_date', $date)->first();
At Blade File If Else
{{ $checkertimeout->time_out !=null ? 'Wont Work' : 'work' }} // when this condition $checkertimeout->time_out !=null true its run after "?" when its false it's running after ":" term
For Controller You can also dd or echo like below :
echo $checkertimeout->time_out !=null ? 'Wont Work' : 'work'; // you can replace echo with return too

Answer 3

First your query is getting all the records.
you should do like this in your query:
$checkerTimeOut = Attendance
::where([['emp_id', $request->emp_id], ['attend_date', $date]])
->first();
// This is to get a single record
then if you use if else statement you should also call the column you want to stablish.
if($checkerTimeOut->time_out->isEmpty()
{
dd('not empty');
}
else
{
dd('this record is empty');
}
you can also do like this:
if($checkerTimeOut->time_out)
{
dd('not empty');
}
else
{
dd('this record is empty');
}
or should be like this:
$checkerTimeOut->time_out
? 'not empty'
: 'this record is empty';

Answer 4

Event of the time_out is null, $checkertimeout variable is not empty. Because $checkertimeout is a collection. and it has one item in it.
As you can see like this.
[
{"time_out":null}
]
Since I don't know what you are trying to do, If you want the Attendance only where time_out is not null, You can do this.
$checkertimeout = Attendance::where('emp_id', $request->emp_id)
->where('attend_date', $date)
->whereNotNull('time_out')
->get(['time_out']);

Answer 5

Because $checkertimeout got a collection as
[
{"time_out":null}
]
so its no longer empty and it returns
"wont work"