Laravel 5: Join On with IN query - sql

Question

I'm trying to do something like:
$results = $query->leftJoin('checklist_items', function($join) use ($days) {
$join->on('users.id', '=', 'checklist_items.user_id')
->on('checklist_items.due_date', 'IN', $days);
})
->where('checklist_items.user_id', null)
->limit(10)
->get();
This is an example of the query I'm attempting to execute:
SELECT *
FROM users
LEFT JOIN checklist_items
ON users.id = checklist_items.user_id
AND checklist_items.due_date IN ('2015-07-09', '2015-07-10')
WHERE checklist_items.user_id IS NULL
ORDER BY users.id
So this is a left outer join. In query builder, most of this is no problem. The problem is the fact that my AND line uses an IN query. If it were part of a WHERE clause I would use ->whereIn but since I need it in the Join clause, whereIn won't work and there is no orIn or some such.
Suggestions?

Answer 1

You can use ->whereIn() within the ->leftJoin() closure (Tested in Laravel 5.7.16):
$days = ['2015-07-09', '2015-07-10'];
$results = \DB::table('users')
->leftJoin('checklist_items', function($join) use ($days) {
$join->on('users.id', '=', 'checklist_items.user_id')
->whereIn('checklist_items.due_date', $days);
})
->where('checklist_items.user_id', null)
->orderby('users.id')
->get();
Output from dd(\DB::getQueryLog(); produces your example query:
array:1 [▼
0 => array:3 [▼
"query" => "select * from `users` left join `checklist_items` on `users`.`id` = `checklist_items`.`user_id` and `checklist_items`.`due_date` in (?, ?) where `checklist_items`.`user_id` is null order by `users`.`id` asc ◀"
"bindings" => array:2 [▼
0 => "2015-07-09"
1 => "2015-07-10"
]
"time" => 6.97
]
]

Answer 2

I think you would need to use DB::raw() so it doesn't try to quote your days and wrap your days in parenthesis as well. This should do the trick.
$days = '(\'2015-07-09\', \'2015-07-10\')';
$results = DB::table('users')->leftJoin('checklist_items', function($join) use ($days) {
$join->on('users.id', '=', 'checklist_items.user_id')
->on('checklist_items.due_date', 'IN', DB::raw($days));
})
->where('checklist_items.user_id', null)
->limit(10)
->toSql();
echo $results;

Answer 3

This Query will Work
$results = DB::table('users')
->join('checklist_items','checklist_items.user_id','=','users.id')
->whereIn('checklist_items.due_date',['2015-07-09', '2015-07-10'])
->whereNull('checklist_items.user_id')
->orderBy('users.id','asc')

Answer 4

For Laravel 7 and above use whereIn instead of on :
$join->on('users.id', '=', 'checklist_items.user_id')
->whereIn('checklist_items.due_date',$days);