Improve performance of dashboard list orgs (go-gitea#16099)

* Improve performance of dashboard list orgs

* Fix wrong error description

* unexport queryUserOrgIDs method

* SimpleOrg -> MinimalOrg

* .

Co-authored-by: 6543 <6543@obermui.de>

models/org.go

@@ -425,6 +425,25 @@ func GetOrgsByUserID(userID int64, showAll bool) ([]*User, error) {
 	return getOrgsByUserID(sess, userID, showAll)
 }
 
+// queryUserOrgIDs returns a condition to return user's organization id
+func queryUserOrgIDs(uid int64) *builder.Builder {
+	return builder.Select("team.org_id").
+		From("team_user").InnerJoin("team", "team.id = team_user.team_id").
+		Where(builder.Eq{"team_user.uid": uid})
+}
+
+// MinimalOrg represents a simple orgnization with only needed columns
+type MinimalOrg = User
+
+// GetUserOrgsList returns one user's all orgs list
+func GetUserOrgsList(uid int64) ([]*MinimalOrg, error) {
+	var orgs = make([]*MinimalOrg, 0, 20)
+	return orgs, x.Select("id, name, full_name, visibility, avatar, avatar_email, use_custom_avatar").
+		Table("user").
+		In("id", queryUserOrgIDs(uid)).
+		Find(&orgs)
+}
+
 func getOwnedOrgsByUserID(sess *xorm.Session, userID int64) ([]*User, error) {
 	orgs := make([]*User, 0, 10)
 	return orgs, sess.

routers/web/user/home.go

@@ -49,11 +49,12 @@ func getDashboardContextUser(ctx *context.Context) *models.User {
 	}
 	ctx.Data["ContextUser"] = ctxUser
 
-	if err := ctx.User.GetOrganizations(&models.SearchOrganizationsOptions{All: true}); err != nil {
-		ctx.ServerError("GetOrganizations", err)
+	orgs, err := models.GetUserOrgsList(ctx.User.ID)
+	if err != nil {
+		ctx.ServerError("GetUserOrgsList", err)
 		return nil
 	}
-	ctx.Data["Orgs"] = ctx.User.Orgs
+	ctx.Data["Orgs"] = orgs
 
 	return ctxUser
 }