Golang FindReadings Examples

Example #1

File: ajax.go Project: allenisready/studygolang

// 技术晨读
// uri: /readings/recent.json
func RecentReadingHandler(rw http.ResponseWriter, req *http.Request) {
	limit := req.FormValue("limit")
	if limit == "" {
		limit = "7"
	}

	readings := service.FindReadings("0", limit, model.RtypeGo)
	buf, err := json.Marshal(readings)
	if err != nil {
		logger.Errorln("[RecentReadingHandler] json.marshal error:", err)
		fmt.Fprint(rw, `{"ok": 0, "error":"解析json出错"}`)
		return
	}
	fmt.Fprint(rw, `{"ok": 1, "data":`+string(buf)+`}`)
}

Example #2

File: reading.go Project: bluefchen/studygolang

// 晨读列表页
// uri: /readings
func ReadingsHandler(rw http.ResponseWriter, req *http.Request) {
	limit := 20

	lastId := req.FormValue("lastid")
	if lastId == "" {
		lastId = "0"
	}

	rtype, err := strconv.Atoi(req.FormValue("rtype"))
	if err != nil {
		rtype = model.RtypeGo
	}

	readings := service.FindReadings(lastId, "25", rtype)
	if readings == nil {
		// TODO:服务暂时不可用？
	}

	num := len(readings)
	if num == 0 {
		if lastId == "0" {
			util.Redirect(rw, req, "/")
		} else {
			util.Redirect(rw, req, "/readings")
		}

		return
	}

	var (
		hasPrev, hasNext bool
		prevId, nextId   int
	)

	if lastId != "0" {
		prevId, _ = strconv.Atoi(lastId)

		// 避免因为项目下线，导致判断错误（所以 > 5）
		if prevId-readings[0].Id > 5 {
			hasPrev = false
		} else {
			prevId += limit
			hasPrev = true
		}
	}

	if num > limit {
		hasNext = true
		readings = readings[:limit]
		nextId = readings[limit-1].Id
	} else {
		nextId = readings[num-1].Id
	}

	pageInfo := map[string]interface{}{
		"has_prev": hasPrev,
		"prev_id":  prevId,
		"has_next": hasNext,
		"next_id":  nextId,
	}

	req.Form.Set(filter.CONTENT_TPL_KEY, "/template/readings/list.html")
	// 设置模板数据
	filter.SetData(req, map[string]interface{}{"activeReadings": "active", "readings": readings, "page": pageInfo, "rtype": rtype})
}