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

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> 

请您参考如下方法:

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