如何在 Django 模板中显示模型数据

新手上路,请多包涵

我是 Django 的新手。我正在尝试使用模板在我的索引视图中显示来自我的项目模型的数据。我尽力将此应用程序构建为类似于民意调查应用程序。我不确定我做错了什么。我正在使用 python 2.7 和 django 1.8.6

这是我的网址:

 from django.conf.urls import url

from . import views

app_name = 'project'
urlpatterns = [
    url(r'^$', views.IndexView.as_view(), name='index'),
    url(r'^(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'),
]

这是我的模型:

 import datetime
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
from django.contrib.auth.models import User
from django.utils import timezone

@python_2_unicode_compatible  # only if you need to support Python 2
class Contractor(models.Model):
    #project
    name = models.CharField(max_length=50)
    address = models.CharField(max_length=100, blank=True)
    phone = models.CharField(max_length=14, blank=True)
    city = models.CharField(max_length=60, blank=True)
    state = models.CharField(max_length=2, blank=True)
    created_by = models.ForeignKey(User, related_name='Contractor_created_by')
    created_date = models.DateTimeField()
    modified_by = models.ForeignKey(User, related_name='Contractor_modified_by')
    modified_date = models.DateTimeField()

    def __str__(self):
        return self.name

@python_2_unicode_compatible  # only if you need to support Python 2
class Project(models.Model):
    name = models.CharField(max_length=50)
    jobNumber = models.CharField(max_length=8)
    shopOut = models.DateTimeField(null=True)
    shopIn = models.DateTimeField(null=True)
    delivery = models.DateTimeField(null=True)
    job1 = models.CharField(max_length=50, null=True)
    job2 = models.CharField(max_length=50, null=True)
    job3 = models.CharField(max_length=50, null=True)
    contractor = models.ForeignKey(Contractor, on_delete=models.CASCADE, default=101)
    created_by = models.ForeignKey(User, related_name='Project_created_by')
    created_date = models.DateTimeField(auto_now_add=True)
    modified_by = models.ForeignKey(User, related_name='Project_modified_by')
    modified_date = models.DateTimeField(auto_now=True)
    def __str__(self):
        return self.name
    def save(self, *args, **kwargs):
        if not self.id:
            self.created_by = User.objects.get(id=1)
            self.modified_by = User.objects.get(id=1)
            super(Project, self).save(*args, **kwargs)
            year = datetime.datetime.now().year
            self.jobNumber = '{}{:04d}'.format(year, self.id)
        self.modified_by = User.objects.get(id=1)
        super(Project, self).save(*args, **kwargs)

这是我的观点:

 from django.shortcuts import get_object_or_404, render
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from django.views import generic
from django.utils import timezone

from .models import Project

# Create your views here.
class IndexView(generic.ListView):
    model = Project
    template_name = 'project/index.html'

    def get_queryset(self):
        return Project.objects

class DetailView(generic.DetailView):
    model = Project

这是我的模板:

 {% load staticfiles %}
<h1>Projects</h1>
<ul>
{% for projects in project.get_queryset %}
    in for loop
    <!-- <li><a href="{% url 'projects:detail' projects.id %}">{{ projects.name }}</a></li> -->
    <li><a href="#">Test</a></li>
{% endfor %}

</ul>
end of list

当我转到该页面时,我得到一个 h1 项目、一个空的 ul 和一行显示“列表结尾”的行

原文由 user908759 发布,翻译遵循 CC BY-SA 4.0 许可协议

阅读 356
2 个回答

在你的 get_queryset 中,你应该返回 Project.objects.all()

在您的模板中,您不需要执行 project.get_queryset ,将为您调用 get_queryset 方法,并将值作为 object_list<objectname>_list 以及其他参数。在你的情况下,对象是 Project 所以应该有一个 project_list 变量以及 object_list

你可以做:

 {% for project in project_list %}
    <li><a href="{% url 'projects:detail' project.id %}">{{ project.name }}</a></li>
{% endfor %}

或者:

 {% for project in object_list %}
    <li><a href="{% url 'projects:detail' project.id %}">{{ project.name }}</a></li>
{% endfor %}

您可以在这里阅读更多相关信息: https ://docs.djangoproject.com/en/1.9/ref/class-based-views/generic-display/#listview

原文由 masnun 发布,翻译遵循 CC BY-SA 3.0 许可协议

你的 get queryset 目前不返回查询集,目前它只是返回一个相关的经理。你应该让它返回一个查询集……

 def get_queryset(self):
    return Project.objects.all()  # added all

原文由 Sayse 发布,翻译遵循 CC BY-SA 3.0 许可协议

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