python - Django 表单、 View 和 forms.py 不能一起工作

Question

我第一次涉足 Django，允许用户输入星期几，然后在我的数据库中搜索在给定日期营业的餐馆。现在，餐厅对象 (Resto) 有一个 days_open 属性，每一天都用逗号分隔(星期一、星期二等...)。

当我输入一天时，生成的页面只显示标题和“[]”，我似乎无法让它返回 Resto 对象列表。显示方括号的原因是什么？如何修复它以显示搜索结果？

代码如下 - 如果我忘记包含任何相关位，我深表歉意。

我的表格.py:

from django import forms
from .models import Resto

class RestoSearch(forms.ModelForm):
    class Meta: 
        model = Resto
        fields = ('title', 'description', 'opening_hour', 'closing_hour')

模型.py:

from django.db import models

class Resto(models.Model):
    title = models.CharField(max_length=300)
    description = models.TextField()
    opening_hour = models.TimeField(auto_now=False, auto_now_add=False, null=True)
    closing_hour = models.TimeField(auto_now=False, auto_now_add=False, null=True)
    days_open = models.TextField(blank=True)

views.py:

from django.shortcuts import render
from django.http import Http404
from django.shortcuts import HttpResponse
from belize.models import Resto
from django.core.exceptions import *
from .forms import RestoSearch

def index(request):
    return render(request, 'form.html')

def search(request):

    form = RestoSearch()

    if request.method == 'POST':
        search_id=request.POST.get('textfield', None)
        try:
            #I think this is where my problem is

            available = Resto.objects.filter(days_open = search_id)

            html = ("<H1>Hello</H1>", available)
            return HttpResponse(html)
        except Resto.DoesNotExist:
            return HttpResponse("Please try another day")  
        else:
            return render(request, 'belize/form.html')


def restaurant_detail(request, id):
    try:
        restaurant = Resto.objects.get(id=id)
    except Resto.DoesNotExist:
        raise Http404('This restaurant does not exist')
    return render(request, 'belize/restaurant_detail.html', {
        'restaurant': restaurant,
        })

模板 form.html:

<form method="POST" action="/search/"> 
{% csrf_token %}
<input type="text" name="textfield">

<button type="submit">Enter a day of the week</button>
</form>

Answer 1

我假设您要显示的是 RestoForm，在这种情况下索引方法不正确。应该是

def index(request):
    form = RestoForm()
    return render(request, 'form.html', {'form': form })

然后你的模板应该改变为

<form method="POST" action="/search/"> 
{% csrf_token %}
{{ form }}

<button type="submit">Enter a day of the week</button>
</form>

有关更多详细信息，请参阅 https://docs.djangoproject.com/en/1.9/topics/forms/#the-template 中的示例