5e50b166ef
- Move remaining beach packages and embedded admin assets\n- Rewrite framework, example, build, and gate paths
41 lines
1018 B
Go
41 lines
1018 B
Go
package lagoon
|
|
|
|
// PageMeta is the pagination block of the house REST envelope (DATA-10).
|
|
type PageMeta struct {
|
|
CurrentPage int `json:"current_page"`
|
|
LastPage int `json:"last_page"`
|
|
PerPage int `json:"per_page"`
|
|
Total int64 `json:"total"`
|
|
}
|
|
|
|
// Page wraps already-built row DTOs. There is no links field.
|
|
type Page[T any] struct {
|
|
Data []T `json:"data"`
|
|
Meta PageMeta `json:"meta"`
|
|
}
|
|
|
|
// Paginate builds {data, meta{current_page,last_page,per_page,total}} from
|
|
// a caller-sliced row set. LastPage is ceil(total/perPage); perPage<=0
|
|
// yields LastPage 1 instead of dividing by zero. Nil rows become [].
|
|
func Paginate[T any](rows []T, page, perPage int, total int64) Page[T] {
|
|
last := 1
|
|
if perPage > 0 {
|
|
last = int((total + int64(perPage) - 1) / int64(perPage))
|
|
if last < 1 {
|
|
last = 1
|
|
}
|
|
}
|
|
if rows == nil {
|
|
rows = []T{}
|
|
}
|
|
return Page[T]{
|
|
Data: rows,
|
|
Meta: PageMeta{
|
|
CurrentPage: page,
|
|
LastPage: last,
|
|
PerPage: perPage,
|
|
Total: total,
|
|
},
|
|
}
|
|
}
|