在django模板中将子项排序为父项 [英] Sort children into parent in django template
问题描述
我想将子对象排序到父对象中。具体来说，我想把城市分成各自的状态。然后，我希望城市以正确的状态显示在模板中。我正在寻找的是这样的：
$ p
---
--- City
---城市
编辑：我有一些工作。但是，这些城市正在重复自己的模板。我只需要每一个显示一次。我已经包含模板，看看有没有人可以帮我。
再次感谢。
模型.py
class State（models.Model）：
state_name = models.CharField（max_length = 20，default = '）
state_slug = models.SlugField（）
state_image = models.ForeignKey（Image，null = True）
state_summary = models.TextField（null = True）
def __str __（self）：
return self.state_slug
$ b $ class City（models.Model）：
city_name = models.CharField（max_length = 55，default ='' ）
city_slug = models.SlugField（）
state_image = models.ForeignKey（Image，null = True）
school_image = models.ForeignKey（Image，null = True，related_name ='+'）
state = models.ForeignKey（State，null = True）
def __str __（self）：
return self.city_slug
views.py
类CityInStateView（ListView）：
模型=城市
context_object_name ='city_in_state_list'
$ b $ def get_context_data（self，** kwargs）：
context = super（CityInStateView，self）.get_context_data（** kwargs）
city = city.objects.all（）
state = State.objects.get（state_slug = self.kwargs ['state_slug']）
context ['city_list'] = City.objects.filter（state = state）.order_by（'city_name'）
返回上下文
urls.py
urlpatterns = [
url（r'^ $'，SchoolIndexView.as_view（），name ='school_index'），
url（r'^（？P
template.html
{％block main_content％}
< div class =row body>
< div class =main_content>
< div class =row>
< div class =medium-12 columns small-centered>
< div class =feature_wrapper>
{％load cloudinary％}
< header class =page_header>
< div class =row>
< div class =medium-12 columns>顶栏< / div>
< / div>
< / header>
< div class =search>
< div class =row>
< div class =medium-12 columns>搜索栏< / div>
< / div>
< / div>
{％if city_in_state_list％}
{city_in_state_list％中的城市％}
< section class =hero>
{％cloudinary city.state_image.image format =jpgcrop =fill％}
< p class =photo-caption> $ {{city.state_image.image_name}} {{city.state_image.image_author}} via {{city.state_image.image_source}} | {{city.state_image.image_license}}
< / p>
< / section>
< section class =summary>
< p> {{city.state.state_summary}}< / p>
< / section>
< div class =row>
< div class =medium-12 columns listicle>
< div class =demo_wrapper>
< div class =long_ad_box>
< img src =http://placehold.it/728x90>
< / div>
< / div>
< div class =state_name> $ {
< h2 class =headline>护理学校在{{city.state.state_name}}< / h2>
< / div>
{％if city_list％}
{％for city_list％}
< h2 style =text-align：left;> {{school.city_name}}< / H2>
< div class =school_image>
{％cloudinary city.school_image.image format =jpgcrop =fill％}
< / div>
{％endfor％}
{％endif％}
< / div>
< / div>
< / div>
< / div>
{％endfor％}
{％endif％}
< / div>
{％endblock％}
这一直踢我的屁股一个星期。请给我解释一下，就像我五岁那样。我很欣赏所有的帮助。
解决方案
我想你想使用一个DetailView代表状态，而不是一个列表的城市。这是因为你的URL代表一个状态的对象视图。
所以，你可以
<$ c
$ b $ get_context_data（self）$ b $ model $ = $ template $ ，** kwargs）：
context = super（CityInStateView，self）.get_context_data（** kwargs）
context ['state'] = self.object
context ['city_list'] = self.object.city_set.all（）。order_by（'city_name'）
返回上下文
然后你的模板（简单的例子）就像这样简单：
< h1> {{state.state_name}} < / H1>
{city_list％中的城市％}
< p> {{city.city_name}}< / p>
{％endfor％}
对于使用DetailView的URL，不要使用 slug 作为字段名，你需要告诉DetailView state_slug是你的slu 。您可能需要在模型中添加 unique = True 。
希望您可以从这里
>I have been trying to figure out this problem while learning Django (Python).
I would like to sort children objects into their parent. Specifically, I want to sort cities into their respective state. Then, I want the city to display in the template in its correct state. What I am looking for would like like this:
State
--- City
--- City
--- City
Edit: I've got it somewhat working. However, the cities are repeating themselves in the template. I only need each one to display once. I've included the template to see if anyone can help me with it.
Thanks again.
models.py
class State(models.Model):
state_name = models.CharField(max_length=20, default='')
state_slug = models.SlugField()
state_image = models.ForeignKey(Image, null=True)
state_summary = models.TextField(null=True)
def __str__(self):
return self.state_slug
class City(models.Model):
city_name = models.CharField(max_length=55, default='')
city_slug = models.SlugField()
state_image = models.ForeignKey(Image, null=True)
school_image = models.ForeignKey(Image, null=True, related_name='+')
state = models.ForeignKey(State, null=True)
def __str__(self):
return self.city_slug
views.py
class CityInStateView(ListView):
model = City
context_object_name = 'city_in_state_list'
def get_context_data(self, **kwargs):
context = super(CityInStateView, self).get_context_data(**kwargs)
city = City.objects.all()
state = State.objects.get(state_slug=self.kwargs['state_slug'])
context['city_list'] = City.objects.filter(state=state).order_by('city_name')
return context
urls.py
urlpatterns = [
url(r'^$', SchoolIndexView.as_view(), name='school_index'),
url(r'^(?P<state_slug>[\w-]+)/$', CityInStateView.as_view(), name='state_index'),
]
template.html
{% block main_content %}
<div class="row body">
<div class="main_content">
<div class="row">
<div class="medium-12 columns small-centered">
<div class="feature_wrapper">
{% load cloudinary %}
<header class="page_header">
<div class="row">
<div class="medium-12 columns">Top bar</div>
</div>
</header>
<div class="search">
<div class="row">
<div class="medium-12 columns">Search bar</div>
</div>
</div>
{% if city_in_state_list %}
{% for city in city_in_state_list %}
<section class="hero">
{% cloudinary city.state_image.image format="jpg" crop="fill" %}
<p class="photo-caption">
{{ city.state_image.image_name }} by {{ city.state_image.image_author }} via {{ city.state_image.image_source }} | {{ city.state_image.image_license }}
</p>
</section>
<section class="summary">
<p>{{ city.state.state_summary }}</p>
</section>
<div class="row">
<div class="medium-12 columns listicle">
<div class="demo_wrapper">
<div class="long_ad_box">
<img src="http://placehold.it/728x90">
</div>
</div>
<div class="state_name">
<h2 class="headline">Nursing Schools in {{ city.state.state_name }}</h2>
</div>
{% if city_list %}
{% for school in city_list %}
<h2 style="text-align: left";>{{ school.city_name }}</h2>
<div class="school_image">
{% cloudinary city.school_image.image format="jpg" crop="fill" %}
</div>
{% endfor %}
{% endif %}
</div>
</div>
</div>
</div>
{% endfor %}
{% endif %}
</div>
{% endblock %}
This has been kicking my butt for a week. Please explain it to me like I a m five. I appreciate all of your help in advance.
I think you want to use a DetailView representing the state, rather that a list of cities. This because your URL represents a state's object view.
So, you can
class CityInStateView(generic.DetailView):
model = State
template_name = 'template.html'
slug_field = 'state_slug'
def get_context_data(self, **kwargs):
context = super(CityInStateView, self).get_context_data(**kwargs)
context['state'] = self.object
context['city_list'] = self.object.city_set.all().order_by('city_name')
return context
and then your template (simplified example) would be as simple as:
<h1>{{ state.state_name }}</h1>
{% for city in city_list %}
<p>{{ city.city_name }}</p>
{% endfor %}
For the URL to work with DetailView, and because you did not use slug as the field name, you need to tell the DetailView that state_slug is your slug. You may want to add unique=True to your model.
Hope you can take it from here
这篇关于在django模板中将子项排序为父项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
