【Go web开发之revel+mgo】第8章 实现Email墙

{{set . "title" "Email list - GBlog"}}
{{set . "ema" "active" }}
{{template "header.html" .}}
<div class="content">
    <div class="email-nav" >
      <span class="email-tag">
        <img src="http://www.gravatar.com/avatar/8b801bb6de1a876f7df749cedb8994a6?s=64" style="border-radius:32px"/>
        <span>jov123@163.com</span>
       </span>
    </div>
  </div>
  </div>
  </body>
</html>

func (c App) Emails() revel.Result {
	return c.Render()
}

GET     /email                               	App.Emails

package models
import (
	"github.com/revel/revel"
	"labix.org/v2/mgo/bson"
	"time"
	"crypto/md5"
	"io"
	"fmt"
)
type EmailObj struct{
	Email string
	ImgUrl string
	CDate time.Time
}
func (dao *Dao) InsertEmail(emailObj *EmailObj) error {
	emailCollection := dao.session.DB(DbName).C(EmailCollection)
	emailObj.CDate = time.Now();
	h := md5.New()
	io.WriteString(h, emailObj.Email)
  	emailObj.ImgUrl = fmt.Sprintf("%x", h.Sum(nil))
    fmt.Println(emailObj)
	_,err := emailCollection.Upsert(bson.M{"email": emailObj.Email}, emailObj)
	if err != nil {
		revel.WARN.Printf("Unable to save EmailObj: %v error %v", emailObj, err)
	}
	return err
}
func (dao *Dao) FindAllEmails() []EmailObj{
	emailCollection := dao.session.DB(DbName).C(EmailCollection)
	emails := []EmailObj{}
	query := emailCollection.Find(bson.M{}).Sort("-cdate")
	query.All(&emails)
	return emails
}

func (c App) Emails() revel.Result {
	dao, err := models.NewDao()
	if err != nil {
		c.Response.Status = 500
		return c.RenderError(err)
	}
	defer dao.Close()
	emails :=dao.FindAllEmails();
	return c.Render(emails)
}

{{set . "title" "Email list - GBlog"}}
{{set . "ema" "active" }}
{{template "header.html" .}}
<div class="content">
    <div class="email-nav" >
      {{if .emails}}
       {{range $email:= .emails}}
       <span class="email-tag">
        <img src="http://www.gravatar.com/avatar/{{$email.ImgUrl}}?s=64" style="border-radius:32px"/>
        <span title="last update at:{{$email.CDate.Format "2006-01-02 15:04"}}">{{$email.Email}}</span>
       </span>
       {{end}}
       {{end}}
    </div>
  </div>
  </div>
  </body>
</html>

newEmail := new(models.EmailObj);
newEmail.Email = blog.Email;
dao.InsertEmail(newEmail);

newEmail := new(models.EmailObj);
newEmail.Email = comment.Email;
dao.InsertEmail(newEmail);

newEmail := new(models.EmailObj);
newEmail.Email = message.Email;
dao.InsertEmail(newEmail);