// SendMail is a shorthand function for sending an email from a template.
// If the loaded gnd.la/template.Template.ContentType() returns a string
// containing "html", the gnd.la/net/mail.Message HTMLBody field is set, other
// the TextBody field is used. Note that if template is empty, the msg is
// passed unmodified to mail.Send(). Other Message fields are never altered.
//
// Note: mail.Send does not work on App Engine, users must always use this function instead.
func (c *Context) SendMail(template string, data interface{}, msg *mail.Message) error {
if template != "" {
t, err := c.app.LoadTemplate(template)
if err != nil {
return err
}
if msg == nil {
msg = &mail.Message{}
}
var buf bytes.Buffer
if err := t.ExecuteTo(&buf, c, data); err != nil {
return err
}
if strings.Contains(t.tmpl.ContentType(), "/html") {
msg.HTMLBody = buf.String()
} else {
msg.TextBody = buf.String()
}
}
c.prepareMessage(msg)
return mail.Send(msg)
}
func (c *Context) prepareMessage(msg *mail.Message) {
msg.Context = appengine.NewContext(c.R)
}