使用两个字段的下拉菜单填充 django 表单

Question

forms.py

from django import forms

class DataForm(forms.Form):
    ins = forms.CharField(max_length=100)
    contest = forms.CharField(max_length=100)

views.py

from django.shortcuts import render_to_response, render
from django.http import HttpResponseRedirect
from django.contrib import messages 
from django.core.context_processors import csrf
import mylife
import codechef
from codechef.models import chef, aprilcook
from forms import DataForm

def all_users(request):
    return render_to_response('C:/Users/shubham/Desktop/code_chef/project/mylife/codechef/templates/allusers.html', { 'user_list': chef.objects.all() })

def print_table(request):
    return render_to_response('C:/Users/shubham/Desktop/code_chef/project/mylife/codechef/templates/tables.html')


def display(request):
    if request.method == 'POST':
        form = DataForm(request.POST)
        if form.is_valid():
            print '-----------------------------------'
            print form
            print '-----------------------------------'
            insti = form['ins'].value()
            return render_to_response('C:/Users/shubham/Desktop/code_chef/project/mylife/codechef/templates/allusers.html', { 'user_list': chef.objects.filter(inst = insti) })
    else:
        form = DataForm() # An unbound form

    return render(request, 'forms.html', {
        'form': form,
    })

def enter_data(request):
    form = DataForm(request.POST)
    return render(request, 'forms.html', {
        'form': form,
    })

forms.html

<form action="/display/" method="post">{% csrf_token %}
<div class="form-group">
    <label for="id_ins">select Institute Name</label>
    <select id="id_ins" class="form-control" size="1">
        <option>select Institute</option>
        <option value="National Institute of Technology, Kurukshetra">National Institute of Technology, Kurukshetra</option>
        <option value="Netaji Subhas Institute of Technology, New Delhi">Netaji Subhas Institute of Technology, New Delhi</option>
        <option value="Maulana Azad National Institute of Technology, Bhopal">Maulana Azad National Institute of Technology, Bhopal</option>
        <option value="Birla Institute of Technology Mesra">Birla Institute of Technology Mesra</option>
        <option value="Delhi Technological University">Delhi Technological University</option>
        <option value="Shiraz University">Shiraz University</option>
        <option value="Indian Institute of Information Technology, Allahabad">Indian Institute of Information Technology, Allahabad</option>
        <option value="Indian Institute of Technology Guwahati">Indian Institute of Technology Guwahati</option>
        <option value="National Institute of Technology, Kurukshetra">National Institute of Technology, Kurukshetra</option>
        <option value="National Institute of Technology Tiruchirappalli">National Institute of Technology Tiruchirappalli</option>
    </select>
</div>

<div class="form-group">
    <label for="id_contest">select contest Name</label>
    <select id="disabledSelect" class="form-control">
        <option>select Contest</option>
        <option value="JULY LONG">JULY LONG</option>
    </select>
</div>

<div class="checkbox">
    <label>
        <input type="checkbox">Agree terms
    </label>
</div>

<button type="submit" value="Submit" class="btn btn-primary">Submit</button>

forms.py 中有两个字段：ins 和竞赛，我希望通过 html 页面中的下拉菜单进入这两个字段。现在问题在于forms.html。我无法使用下拉菜单填充表单字段。当我使用 {{ form.ins }} 和 {{ form.contest }} 时，它可以工作（接收到在文本框中手动输入的数据并将正确的页面重定向到），但它以文本框的形式输入。 我无法将下拉菜单与我的 django 表单链接。如果我在 forms.html 中提供 {{ form.ins }} 和下拉菜单，那么会同时出现文本框输入和下拉菜单，其中只有文本框正常工作，下拉菜单仍然没有使用。我希望通过下拉菜单接收表单输入，并且 hmtl 页面中应该没有文本框输入。

Answer 1

在您的表单中使用 form.ChoiceField 而不是 CharField()。

from django import forms

INS_CHOICES = (
    ('NIT', 'Netaji Subhas Institute of Technology, New Delhi'),
    ('NSIT', 'Netaji Subhas Institute of Technology, New Delhi'),
    ...
)

class DataForm(forms.Form):
    ins = forms.ChoiceField(choices=INS_CHOICES)

更多信息请看这里：https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield

但是无论如何你都应该考虑使用 CreateView，因为它的工作量会少很多：https://docs.djangoproject.com/en/dev/ref/class-based-views/generic-editing/