Distinct and sorting

[Darko Luketic]

Hello,

resurrecting the dead here.

I have a problem with distinct query and sorting.

type Node struct {

Tags []*Tag

}

type Tag struct {

Slug string

Name string

}

and this function

func (h *Handler) allTags() ([]*model.Tag, error) {
   ms := h.ms.Copy()
   defer ms.Close()
   c := ms.DB(h.db).C(contentCollection)
   tags := []*model.Tag{}
   if e := c.Find(nil).Distinct("tags", &tags); e != nil {
      return nil, e
   }
   return tags, nil
}

and I tried .Sort("tags") or "tags.name" "tags.slug" but it's not working.
And I can't suffix another function after distinct.

I guess I have to manually sort the result, or is there a way?

Regards,
Darko

[Diego Medina]

the mongo server doesn't allow sorting when calling distinct so you'll have to sort it on your program

https://jira.mongodb.org/browse/SERVER-2130

Depending on how large the list you get from mongodb, you can decide to sort it in your code tr rewrite the query using aggregate

Regards,

Diego