71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
// Copyright 2016 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package context
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import (
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"fmt"
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"strings"
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"github.com/Unknwon/paginater"
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"gopkg.in/macaron.v1"
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"github.com/gogits/gogs/modules/base"
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"github.com/gogits/gogs/modules/log"
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"github.com/gogits/gogs/modules/setting"
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)
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type APIContext struct {
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*Context
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}
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// Error responses error message to client with given message.
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// If status is 500, also it prints error to log.
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func (ctx *APIContext) Error(status int, title string, obj interface{}) {
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var message string
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if err, ok := obj.(error); ok {
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message = err.Error()
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} else {
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message = obj.(string)
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}
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if status == 500 {
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log.Error(4, "%s: %s", title, message)
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}
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ctx.JSON(status, map[string]string{
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"message": message,
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"url": base.DOC_URL,
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})
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}
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func (ctx *APIContext) SetLinkHeader(total, pageSize int) {
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page := paginater.New(total, pageSize, ctx.QueryInt("page"), 0)
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links := make([]string, 0, 4)
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if page.HasNext() {
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links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"next\"", setting.AppUrl, ctx.Req.URL.Path[1:], page.Next()))
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}
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if !page.IsLast() {
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links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"last\"", setting.AppUrl, ctx.Req.URL.Path[1:], page.TotalPages()))
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}
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if !page.IsFirst() {
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links = append(links, fmt.Sprintf("<%s%s?page=1>; rel=\"first\"", setting.AppUrl, ctx.Req.URL.Path[1:]))
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}
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if page.HasPrevious() {
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links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"prev\"", setting.AppUrl, ctx.Req.URL.Path[1:], page.Previous()))
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}
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if len(links) > 0 {
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ctx.Header().Set("Link", strings.Join(links, ","))
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}
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}
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func APIContexter() macaron.Handler {
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return func(c *Context) {
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ctx := &APIContext{
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Context: c,
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}
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c.Map(ctx)
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}
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}
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