Question

您好我正在学习python / django 如何使用pre_save

发送电子邮件通知

我有一个任务表单并分配给所有用户的下拉列表。我想在分配给任务时向他们发送电子邮件

这里是views.py

class Job(models.Model):
completed = models.BooleanField(default=False)
task_name = models.CharField(max_length=80, blank=False)
description = models.CharField(max_length=80, blank=False)
is_important = models.BooleanField(default=False)
completion_date = models.DateField(blank=True, null=True)
assign_to = models.ForeignKey(User, blank=True, null=True)
comments = models.TextField(blank=True)

def __unicode__(self):
    return self.task_name

models.py

send_mail(
           subject = 'New task',
           message = 'You have been assigned to a task',
           from_email = "noreply@gmail.com",
           recipient_list=[Job.assign_to.email]
        )

电子邮件

angular.module('xxx').controller('xxxCtrl', ['$scope', ..., '$q', function($scope, ..., $q){
    ...

    //every checked unchecked event in multi-checkbox trigger the change in measurement
    $scope.$watch('measurement', function (newValue, oldValue) {

        pendingRequests = {
                    primary: $q.defer(),
                    ...: $q.defer()
                };

        var promises = _.map(pendingRequests, function (deferred) {
                return deferred.promise;
            });

        $q.all(promises).then(function (results) {

            $scope.data = results[0];
            $window.console.log($scope.data);


        });

        //Here i have a $http request to server
        ResultService.requestResultsOnce();
    });

}])

Answer 1

您可以使用django包的EmailMultiAlternatives发送电子邮件。

模块可以导入为：

from django.core.mail import EmailMultiAlternatives

然后您的发送功能可以容纳此行以发送电子邮件

msg = EmailMultiAlternatives(subject, message, from_email,recipients_list)
msg.send()

Answer 2

如果你想使用pre_save信号，你需要在信号发现的地方注册信号。

有两种方法可以使用信号中的pre_save.connect方法或使用django.dispatch.receiver装饰器来注册它。 Docs.

由于使用connect适用于1.7之前的版本，我将覆盖该版本。

通过在models.py文件中注册信号，可以发现：

from django.db.models.signals import pre_save

# The arguments this function receives are defined by the `pre_save` signal.
def send_task_email(sender, instance, raw, using, update_fields):
    # The logic to send the email goes here. e.g.
    return send_mail(
        subject='New task',
        message = 'You have been assigned to a task',
        from_email = "noreply@gmail.com",
        recipient_list=[instance.assign_to.email]
    )

# Register the pre_save signal with the Job model.
# Please note the `dispatch_uid` kwarg to avoid signal duplication.
pre_save.connect(send_task_email, sender=Job, dispatch_uid="sending_email_uid")

作为最后一点：信号将阻止执行直到完成，发送电子邮件是一个很好的候选者，可以作为后台任务实施。

使用pre_save发送电子邮件通知

2 个答案: