我正在使用Django 1.8.3和Python 3.4.3
我会尽力解释这个问题。如果这篇文章有更好的标题,请建议。
我们从电子邮件和网站流量来源将数据导入我们的应用程序,然后在视图模板中以表格格式显示数据。我正在添加一个表来显示总数,这将有助于我们更好地可视化我们的电子邮件活动。我想呈现的一件事是当前数据所代表的整个广告系列月份。例如:如果我们要跟踪1月到6月的数据,那么我们的广告系列总月数就是6.
我是Python的新手,所以很难将解决方案整合在一起,特别是因为我需要计算一个字符串数组(几个月)并提供和返回int(6 - 用上面的例子)。
下面是我的模型类models.py
class Email(models.Model):
date = models.DateField()
time = models.TimeField()
month = models.CharField(max_length=255, null=True)
subject = models.CharField(max_length=255)
day_of_week = models.CharField(max_length=255)
subject_type = models.CharField(max_length=255)
content_type = models.CharField(max_length=255)
email_list = models.CharField(max_length=255)
recipients = models.PositiveIntegerField()
unsubscribes = models.PositiveIntegerField()
bounces = models.PositiveIntegerField()
open = models.PositiveIntegerField()
所以,我想要完成的是如果查看上面的模型 - 如果month
的总和不等于0,则recipients
计数是多少,因此对于每个月的收件人不等于0,那个月会增加1个月计数。
以下是我的views.py文件的片段,以显示我们如何按月获取收件人的当前计数。
views.py
def get_context_data(self, **kwargs):
context = super(EmailListView, self).get_context_data(**kwargs)
days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']
months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October',
'November', 'December']
subject_type = ['Offer', 'Sell', 'Fear', 'Learn']
content_type = ['Offer', 'Sell', 'Fear', 'Learn']
email_list = ['FMGB', 'FMGR', 'AE', 'IBA']
total_campaigns = {}
total_recipients = {}
total_unsubscribes = {}
total_bounces = {}
total_open = {}
total_clicks = {}
total_campaigns_content = {}
total_recipients_content = {}
total_unsubscribes_content = {}
total_bounces_content = {}
total_open_content = {}
total_clicks_content = {}
total_campaigns_subject = {}
total_recipients_subject = {}
total_unsubscribes_subject = {}
total_bounces_subject = {}
total_open_subject = {}
total_clicks_subject = {}
for month in months:
# total count
total_campaigns[month] = Email.objects.filter(month=month).count()
# recipients
total_recipients[month] = Email.objects.filter(month=month).aggregate(
Sum('recipients')).get('recipients__sum', 0.00)
# unsubscribes
total_unsubscribes[month] = Email.objects.filter(month=month).aggregate(
Sum('unsubscribes')).get('unsubscribes__sum', 0.00)
# bounces
total_bounces[month] = Email.objects.filter(month=month).aggregate(Sum('bounces')).get(
'bounces__sum', 0.00)
# opens
total_open[month] = Email.objects.filter(month=month).aggregate(
Sum('open')).get('open__sum', 0.00)
# clicks
total_clicks[month] = Email.objects.filter(month=month).aggregate(
Sum('clicks')).get('clicks__sum', 0.00)
...
感谢您的时间。
答案 0 :(得分:2)
此查询应该完成工作:
count = Email.objects.filter(recipients__gt=0).values('month').distinct().count()
答案 1 :(得分:0)
如果我正确理解您打算做什么以及您的模型如何运作,您可以这样做:
count = 0
for month in months:
temp = Email.objects.filter(month=month, recipients != 0)
if temp:
count = count + 1
如果没有对象匹配过滤器,则 temp为None,因此if temp
仅在有至少1个收件人的电子邮件时运行,并且我猜你不能有负收件人,所以如果有一封电子邮件有收件人> 0然后该月的收件人总和不为零。