创建Django查询集以访问整个数据库

时间:2015-07-19 19:17:25

标签: django python-3.x django-models django-templates django-views

更新我意识到我在下面的解释隐藏了我真正的问题。最终我要完成的是创建一个dashboard.html模板,并能够从我的流量和电子邮件模型中呈现访问/数据。

我正在使用Django 1.8.3和Python 3.4.3

我正在构建一个软件,它将获取输入值并在视图中显示它们 - 简单。目前,我有两个模型/视图,其中包含用于查看数据的各个模板。这可以按预期工作。

我也在创建一个仪表板,应该从我的两个模型中提取数据,这是让我感到悲伤的部分。我在查询集上阅读了很多内容,但是找不到一个关于如何在我完全理解的项目中实现的示例。

让您了解所呈现的内容;此数据是从Google Analytics导出的表格数据,转换为csv,然后从Django admin导入应用程序。我们的想法是能够使用“for”循环将数据作为列表进行查看,这样可行,仪表板能够生成计算数据的可视化图形。

非常感谢任何帮助。我不确定你需要多少信息,所以我将尽可能多地包括在内。谢谢。

models.py

from django.db import models


class Traffic(models.Model):
    date = models.DateField()
    traffic = models.PositiveIntegerField(null=True)
    ifs_signups = models.IntegerField(null=True)
    campaigns = models.IntegerField(null=True)
    sales = models.PositiveIntegerField(null=True)

    def month(self):
        return self.date.strftime("%B")

    def quarter(self):
        item = self.date.strftime("%B")
        q1 = (["January", "February", "March"])
        q2 = (["April", "May", "June"])
        q3 = (["July", "August", "September"])
        q4 = (["October", "November", "December"])

        if item in q1:
            return "1st Quarter"
        elif item in q2:
            return "2nd Quarter"
        elif item in q3:
            return "3rd Quarter"
        elif item in q4:
            return "4th Quarter"
        else:
            return "No Date Specified"

    def conversions(self):
        conversion = self.sales / self.traffic
        return "%r" % conversion


class Email(models.Model):
    date = models.DateField()
    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(null=True)
    unsubscribes = models.PositiveIntegerField(null=True)
    bounces = models.PositiveIntegerField(null=True)
    open = models.PositiveIntegerField(null=True)
    clicks = models.PositiveIntegerField(null=True)

    def month(self):
        return self.date.strftime("%B")

    def open_rate(self):
        open_rate = self.open / self.recipients
        return "%r" % open_rate

    def click_through_rate(self):
        click_through_rate = self.clicks / self.open
        return "%r" % click_through_rate

views.py

from django.shortcuts import render, redirect
from django.views.generic import ListView
from .models import Traffic
from .models import Email


class TrafficListView(ListView):
    model = Traffic
    template_name = 'dashboard/pages/traffic.html'

    def get_context_data(self, **kwargs):
        context = super(TrafficListView, self).get_context_data(**kwargs)
        return context


class EmailListView(ListView):
    model = Email
    template_name = 'dashboard/pages/email.html'

    def get_context_data(self, **kwargs):
        context = super(EmailListView, self).get_context_data(**kwargs)
        return context

1 个答案:

答案 0 :(得分:2)

我建议远离ListView并实现自己的简单TemplateView

<form method="POST">
<input type="checkbox" name="fields[]" value="1" />
<input type="checkbox" name="fields[]" value="2" />
</form>