Add custom pagination template

schema/ent/example/start.go

@@ -3,11 +3,9 @@ package main
 import (
 	"context"
 	"ersteller-lib/schema/ent/example/ent"
-	"ersteller-lib/schema/ent/example/ent/user"
 	"log"
 	"time"
 
-	"entgo.io/ent/dialect/sql"
 	_ "github.com/mattn/go-sqlite3"
 )
 
@@ -40,7 +38,8 @@ func main() {
 	//	log.Fatalf("failed updating user: %w", err)
 	//}j
 	//log.Println("user was updated", u)
-	users, nextId, hasNext, err := ListUsersAfterID(ctx, client, 0, 2)
+	query := client.User.Query()
+	users, nextId, hasNext, err := query.PaginateAfterID(ctx, 0, 2)
 	if err != nil {
 		log.Fatalf("failed listing users: %w", err)
 	}
@@ -50,7 +49,7 @@ func main() {
 			log.Println("user", u.ID, u.Email, u.Password)
 		}
 	}
-	users, nextId, hasNext, err = ListUsersAfterID(ctx, client, nextId, 2)
+	users, nextId, hasNext, err = query.PaginateAfterID(ctx, nextId, 2)
 	if err != nil {
 		log.Fatalf("failed listing users: %w", err)
 	}
@@ -62,31 +61,3 @@ func main() {
 	}
 
 }
-
-// afterID is the last ID from the previous page. Use 0 for the first page.
-func ListUsersAfterID(ctx context.Context, client *ent.Client, afterID, limit int) ([]*ent.User, int, bool, error) {
-	q := client.User.Query().
-		Order(user.ByID(sql.OrderAsc())).
-		Limit(limit + 1) // fetch one extra to detect "has next"
-
-	if afterID > 0 {
-		q = q.Where(user.IDGT(afterID))
-	}
-
-	rows, err := q.All(ctx)
-	if err != nil {
-		return nil, -1, false, err
-	}
-
-	hasNext := len(rows) > limit
-	if hasNext {
-		rows = rows[:limit]
-	}
-
-	var next int
-	if len(rows) > 0 {
-		last := rows[len(rows)-1].ID
-		next = last
-	}
-	return rows, next, hasNext, nil
-}