GORM: Preloading not working with nested associations? - go

Question

I'm trying to preload association ProfileData on Profile, where Profile is a collection type in ProfileCollection model. It loads the profiles / members of the collection, although not the inner associations of Profile such as ProfileData?
Code:
var collections []ProfileCollection
var error = database.
Model(ProfileCollection{}).
Preload(clause.Associations).
Find(&collections).
Error
if error != nil {
log.Fatalln(error)
}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(collections)
I've also tried loading them like so but nothing changed:
.Preload("Members.ProfileData")
JSON Output:
{
"id": 1,
"name": "Test 1",
"description": "Just one from the seeder.",
"members": [
{
"id": 10,
"collection_id": 1,
"path": "/",
"created_at": "2021-09-05T01:40:06Z",
"updated_at": "2021-09-05T01:40:06Z",
"collection": {
"id": 0,
"name": "",
"description": "",
"members": null
},
"profile_data": {
"id": 0,
"profile_id": 0,
"name": "",
"username": "",
"picture": "",
"bio": "",
"is_private": false,
"other_data": null,
"created_at": "0001-01-01T00:00:00Z",
"updated_at": "0001-01-01T00:00:00Z"
},
"media_items": null,
"origin": null,
},
]
}
Structs:
type ProfileCollection struct {
ID int64 `json:"id"`
Name string `json:"name"`
Description string `json:"description"`
Members []Profile `gorm:"foreignKey:collection_id" json:"members"`
}
type Profile struct {
ID int64 `json:"id" gorm:"primary_key"`
CollectionId int64 `json:"collection_id"`
Path string `json:"path"`
CreatedAt time.Time `json:"created_at"`
UpdatedAt time.Time `json:"updated_at"`
ProfileData ProfileData `gorm:"foreignKey:profile_id" json:"profile_data"`
MediaItems []ProfileMediaItem `gorm:"foreignKey:profile_id" json:"media_items"`
Origin *Profile `gorm:"foreignKey:origin_id" json:"origin"`
}
type ProfileData struct {
ID int64 `json:"id" gorm:"primary_key"`
ProfileId int64 `json:"profile_id"`
Name string `json:"name"`
Username string `json:"username"`
Picture string `json:"picture"`
Bio string `json:"bio"`
IsPrivate bool `json:"is_private"`
OtherData datatypes.JSON `json:"other_data"`
CreatedAt time.Time `json:"created_at"`
UpdatedAt time.Time `json:"updated_at"`
}