Add custom pagination template

schema/ent/example/ent/pagination_query.go

@@ -0,0 +1,49 @@
+// Code generated by entc template, DO NOT EDIT.
+
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+)
+
+// PaginateAfterID paginates User by monotonically increasing "id".
+// It preserves any existing filters/joins applied to the query, fetches up to "limit" items,
+// and returns the next cursor (last ID of this page) and whether a next page exists.
+func (q *UserQuery) PaginateAfterID(ctx context.Context, afterID, limit int) ([]*User, int, bool, error) {
+	if limit <= 0 {
+		limit = 20
+	}
+
+	qq := q.Clone().
+		Order(func(s *sql.Selector) {
+			s.OrderBy(s.C("id"))
+		}).
+		Limit(limit + 1) // fetch one extra to detect "has next"
+
+	if afterID > 0 {
+		qq = qq.Where(func(s *sql.Selector) {
+			s.Where(sql.GT(s.C("id"), afterID))
+		})
+	}
+
+	rows, err := qq.All(ctx)
+	if err != nil {
+		return nil, 0, false, err
+	}
+
+	hasNext := len(rows) > limit
+	if hasNext {
+		rows = rows[:limit]
+	}
+
+	next := 0
+	if len(rows) > 0 {
+		next = rows[len(rows)-1].ID
+	}
+
+	return rows, next, hasNext, nil
+}