controller.go
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// Copyright 2014 beego Author. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Usage
//
// In your beego.Controller:
//
// package controllers
//
// import "github.com/astaxie/beego/utils/pagination"
//
// type PostsController struct {
// beego.Controller
// }
//
// func (this *PostsController) ListAllPosts() {
// // sets this.Data["paginator"] with the current offset (from the url query param)
// postsPerPage := 20
// paginator := pagination.SetPaginator(this, postsPerPage, CountPosts())
//
// // fetch the next 20 posts
// this.Data["posts"] = ListPostsByOffsetAndLimit(paginator.Offset(), postsPerPage)
// }
//
//
// In your view templates:
//
// {{if .paginator.HasPages}}
// <ul class="pagination pagination">
// {{if .paginator.HasPrev}}
// <li><a href="{{.paginator.PageLinkFirst}}">{{ i18n .Lang "paginator.first_page"}}</a></li>
// <li><a href="{{.paginator.PageLinkPrev}}">«</a></li>
// {{else}}
// <li class="disabled"><a>{{ i18n .Lang "paginator.first_page"}}</a></li>
// <li class="disabled"><a>«</a></li>
// {{end}}
// {{range $index, $page := .paginator.Pages}}
// <li{{if $.paginator.IsActive .}} class="active"{{end}}>
// <a href="{{$.paginator.PageLink $page}}">{{$page}}</a>
// </li>
// {{end}}
// {{if .paginator.HasNext}}
// <li><a href="{{.paginator.PageLinkNext}}">»</a></li>
// <li><a href="{{.paginator.PageLinkLast}}">{{ i18n .Lang "paginator.last_page"}}</a></li>
// {{else}}
// <li class="disabled"><a>»</a></li>
// <li class="disabled"><a>{{ i18n .Lang "paginator.last_page"}}</a></li>
// {{end}}
// </ul>
// {{end}}
//
// See also http://beego.me/docs/mvc/view/page.md
package pagination
import (
"github.com/astaxie/beego/context"
)
type PaginationController interface {
GetCtx() *context.Context
GetData() map[interface{}]interface{}
}
// Instantiates a Paginator and assigns it to controller.Data["paginator"].
func SetPaginator(controller PaginationController, per int, nums int64) (paginator *Paginator) {
request := controller.GetCtx().Request
paginator = NewPaginator(request, per, nums)
data := controller.GetData()
data["paginator"] = paginator
return
}