Question

我是Django的新手，我正在尝试创建一个简单的网页，如果这看起来非常简单或简单，那就很抱歉。目前我有这些模型：

class Fighter(models.Model):
    name = models.CharField(max_length=50)
    rating = models.DecimalField(default=1600, max_digits=8, decimal_places=2)
    url = models.URLField(default='')

class Fight(models.Model):
    member1 = models.ForeignKey(Fighter, related_name='fighter_1')
    member2 = models.ForeignKey(Fighter, related_name='fighter_2')

我希望每次刷新页面时显示一个随机的战斗，并且它是关联的成员，然后有一个单选按钮（或类似的东西），允许用户选择他们认为会赢的人。

我认为我需要使用表单来执行此操作，但在阅读了大量Django文档后，我不知道如何执行此操作。有人可以解释一下让我这么做的最好方法！

我一直在使用基于类的视图，这是正确的做法吗？如果我没有提供足够的代码，请告诉我。

Answer 1

为了跟踪被引用的战斗实例，我使用了URL来提及战斗ID。每次用户访问（主页）页面时，都会创建一个新的战斗实例。然后视图将重定向到该战斗形式的URL。

urls.py

from django.conf.urls import patterns, include, url
from fights.views import FightView, random_fight

from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
    url(r'^$', random_fight, name='home'),
    url(r'^fight/(?P<fight_id>\d+)/$', FightView.as_view(), name='fight_view'),
    url(r'^admin/', include(admin.site.urls)),
)

forms.py

表单将使用动态创建的单选框进行初始化，其中包含作为关键字参数传递的战士名称。

from django import forms
from .models import Fighter


class FighterSelectForm(forms.Form):
    def __init__(self, *args, **kwargs):
        choices = kwargs.pop("choices", [])
        super(FighterSelectForm, self).__init__(*args, **kwargs)
        self.fields["fighter_choices"] = forms.ChoiceField(
            widget=forms.RadioSelect,
            choices=choices)

views.py

random_fight()创建一个包含两个随机Fight成员的新Fighter个实例，并重定向到相应的fight_view。 FightView类重写get_form()函数以从Fight对象传递战斗机名称，而Fight对象又从URL派生。

from django.shortcuts import render
from .models import Fight, Fighter
from .forms import FighterSelectForm
from django.core.urlresolvers import reverse
from django.http import HttpResponseRedirect
from django.views.generic.edit import FormView


def random_fight(request):
    fighters = Fighter.objects.order_by("?")[:2]
    fight = Fight.objects.create(member1=fighters[0], member2=fighters[1])
    return HttpResponseRedirect(reverse('fight_view', kwargs={"fight_id": str(fight.id)}))


class FightView(FormView):
    template_name = 'fight.html'
    success_url = '/thanks/'    # Not defined here

    def get_form(self, form_class):
        fight = Fight.objects.get(id=self.kwargs.get("fight_id"))
        choices = [(fight.member1.id, fight.member1.name),
                   (fight.member2.id, fight.member2.name)]
        kwargs = super(FightView, self).get_form_kwargs()
        kwargs.update({"choices": choices})
        form = FighterSelectForm(**kwargs)
        return form

    def form_valid(self, form):
        selected = Fighter.objects.get(id=form.cleaned_data['fighter_choices'])
        selected.rating += 100  # Use any logic to change rating here
        selected.save()
        print("Fighter selected: {}".format(selected.name))
        return super(FightView, self).form_valid(form)

fight.html

<form action="" method="post">{% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Submit" />
</form>

我应该创建什么表格来显示这些模型？

1 个答案:

urls.py

forms.py

views.py

fight.html