如何仅在表“ service_gos”中获取“ ids”（Lavarel）

Question

我想通过将“ gos.id”与“ service_gos.gos_id”（LARAVEL 5.6）进行比较，仅返回未在“ service_gos”表中注册的那些“ gos”

goals table

service_goals table

my view

my controller function

result expected

this is what im getting

Answer 1

不确定表名，请相应更改。 试试：

$ids = Goals::whereDoesntHave("service_goals")->pluck("id");