Typeorm - Find entries by ManyToMany relation - sql

Question

I am using Nestjs with Typeorm and Mysql, and I can't figure out a good way to filter entries by their many to many relation.
I have these 2 entities:
Group Entity:
#Entity({ name: 'groups' })
export class Group {
#ManyToMany(() => Tag, { eager: true })
#JoinTable()
tags: Tag[];
}
Tag Entity
#Entity({ name: 'tags' })
export class Tag {
#Column()
#Index({ unique: true })
tag?: string;
}
And would like to search all groups that have a tag with a specific text.
ie. all groups that have the tag.tag "sport"
Tried this code:
const args = {
where: [
{
'tags': In([Like(`%sport%`)]),
}
],
relations: ['tags'], // TAGS
take: filter.take,
skip: filter.skip,
order: filter.order
};
return super.findAll(args);
but it doesn't seem to work..
any help would be great!

Answer 1

return find({
where: {
tags: {
tag: Like(`%sport%`),
},
},
relations: ['tags'],
});
Almost, typeorm accepts an ObjectLiteral or keyof typeof Tags from relations like so:
FindConditions<T>: {
where: {
[s: keyof typeof T]: any,
},
}
That's not quite it but that's the general gist. And if the keyof T is a relation then any is replaced with keyof relation pretty much anyway.
This is the full type for findConditions https://github.com/typeorm/typeorm/blob/master/src/find-options/FindConditions.ts