github.com/gopi-frame/pagination

Pagination

Installation

go get -u -v github.com/gopi-frame/pagination

Import

import "github.com/gopi-frame/pagination"

Usage

Quick Start

package main

import (
	"fmt"
	"github.com/gopi-frame/pagination"
)

func main() {
	numbers := []int{1, 2, 3, 4, 5}
	paginator := pagination.New(numbers, 10, 1, 5)
	fmt.Println(paginator.Items()) // [1, 2, 3, 4, 5]
	fmt.Println(paginator.LastPage()) // 2
	fmt.Println(paginator.Total()) // 10
}

Array Pagination

ArrayPaginator is a simple pagination for array. You can use method Next() to iterate through all pages.

package main

import (
	"fmt"
	"github.com/gopi-frame/pagination"
)

func main() {
	numbers := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
	pagination.NewArray[int](numbers, 1, 5)
	fmt.Println(paginator.Items()) // [1, 2, 3, 4, 5]
	fmt.Println(paginator.LastPage()) // 2
	fmt.Println(paginator.Total()) // 10
	// iterate
	for pagigator.Next() {
		// do something
    }
}

Lazy Load Pagination

LazyPaginator is a pagination for lazy load data. You can use method Next() to iterate through all pages.

package main

import "github.com/gopi-frame/pagination"

func main() {
	numbers := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
	var loader = func(page, pageSize int) ([]int, int64) {
		total := int64(len(numbers))
		s := (page - 1) * pageSize
		if int64(s) >= total {
			return []int{}, total
		}
		e := page * pageSize
		if e >= total {
			return numbers[s:], total
		}
		return numbers[s:e], total
	}
	paginator := pagination.NewLazy(loader, 10, 1)
	// iterate
	for pagigator.Next() {
		// do something
	}
}