feat(user): 添加用户分页列表接口及通用查询封装

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unclesam committed 2026-07-07 23:42:14 +08:00
1 parent 50dc1b0f09
commit 1bca4808e9
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package common
import "context"
// EntQuery 定义满足 Ent 所有查询构建器的泛型接口
// Q 为具体的查询器类型(如 *ent.UserQuery),T 为返回的实体类型(如 *ent.User)
type EntQuery[Q any, T any] interface {
Limit(int) Q
Offset(int) Q
Count(ctx context.Context) (int, error)
All(ctx context.Context) ([]T, error)
}
// QueryOptions 通用列表查询配置项
type QueryOptions[Q any] struct {
Page int
Limit int
Query func(Q) Q // Query 闭包:在这里传入具体的过滤条件(Where)、排序(Order)和预加载(With)
}
func QueryList[Q EntQuery[Q, T], T any](ctx context.Context, query Q, opts QueryOptions[Q]) (list []T, count int, err error) {
if opts.Query != nil {
query = opts.Query(query)
}
count, err = query.Count(ctx)
if err != nil {
return nil, 0, err
}
page := opts.Page
if page <= 0 {
page = 1
}
limit := opts.Limit
if limit <= 0 {
limit = 10 // 默认每页 10 条
}
offset := (page - 1) * limit
list, err = query.Limit(limit).Offset(offset).All(ctx)
if err != nil {
return nil, 0, err
}
return list, count, nil
}