将动态数组结构传递给函数Golang

Question

I want to create function that accept 'dynamic array struct' and use it to map a data from database *mgodb

type Cats struct {
  Meow string 
}
func getCatsPagination() {
   mapStructResult("Animality","Cat_Col", Cats)
}

type Dogs struct {
  Bark string 
}
func getDogsPagination() {
   mapStructResult("Animality","Dog_Col", Dogs)
}

func mapStructResult(db string, collection string, model interface{}) {

   result := []model{} //gets an error here

   err := con.Find(param).Limit(int(limit)).Skip(int(offset)).All(&result) // map any database result to 'any' struct provided

   if err != nil {
      log.Fatal(err)
   }
}

and gets an error as "model is not a type", why is it? any answer will be highly appreciated !

Answer 1

Pass the ready slice to the mapStructResult function.

type Cats struct {
    Meow string
}

func getCatsPagination() {
    cats := []Cats{}
    mapStructResult("Animality", "Cat_Col", &cats)
}

type Dogs struct {
    Bark string
}

func getDogsPagination() {
    dogs := []Dogs{}
    mapStructResult("Animality", "Dog_Col", &dogs)
}

func mapStructResult(db string, collection string, model interface{}) {
    err := con.Find(param).Limit(int(limit)).Skip(int(offset)).All(result) // map any database result to 'any' struct provided
    if err != nil {
        log.Fatal(err)
    }
}