date time , duration is calculated value, and only start/end is useful for update.

crmMeeting.go

 
 import (
 	"encoding/json"
+	"fmt"
 	"strings"
 	"time"
 )
 }
 
 func (m crmdMeeting) DurationHour() string {
-	return "12:30"
+	hour := m.Duration / 3600
+	minute := (m.Duration % 3600) / 60
+	return fmt.Sprintf("%02d:%02d", hour, minute)
 }

spaEditMeeting.go

 	starthour, hok := form["starthour"]
 	duration, rok := form["duration"]
 	if sok && hok && rok {
-		m.buildStartDate(startdate[0], starthour[0])
-		m.buildDuration(duration[0])
+		m.buildStartDate(startdate[0], starthour[0], duration[0])
 	} else {
 		m.addSpaErr("活动日期，开始时间，持续时间 不能为空")
 	}
 	return false
 }
 
-func (m *crmdMeeting) buildStartDate(date, hour string) {
+func (m *crmdMeeting) buildStartDate(date, hour, duration string) {
 	layout := "2 January, 2006 15:04"
 	value := strings.TrimSpace(date) + " " + strings.TrimSpace(hour)
 	t, err := time.Parse(layout, value)
 	}
 	m.DateStart = t.Format(getCrmTimeLayout())
 	log.Println(m.DateStart)
+
+	m.buildDuration(duration)
+	m.DateEnd = t.Add(time.Second * time.Duration(m.Duration)).Format(getCrmTimeLayout())
 }
 
 func (m *crmdMeeting) buildDuration(duration string) {