Python - 更新（編輯）表單不顯示

Question

我一直在閱讀django文檔，Google搜索了幾天沒有和我一樣的問題。看起來「Views.py」中的方法「member_edit」不返回任何數據，因此無法顯示錶單。

希望你們中的一些人能夠發現我出錯的地方。感謝我能得到的所有幫助！

Models.py

class Member(models.Model): 
    member_no = models.AutoField(primary_key=True) 
    first_name = models.CharField(max_length=50, null=True, blank=True) 
    last_name = models.CharField(max_length=50, null=True, blank=True) 
    email = models.CharField(max_length=50, null=True, blank=True) 
    reg_date = models.DateTimeField(null=True, blank=True) 

    class Meta: 
     db_table = 'Member' 

Forms.py

class RegForm(forms.ModelForm): 
    first_name = forms.CharField(
     widget=forms.TextInput(attrs={'class': 'form-control'}), 
     max_length=30, 
     required=True) 
    last_name = forms.CharField(
     widget=forms.TextInput(attrs={'class': 'form-control'}), 
     max_length=30, 
     required=True) 
    email = forms.CharField(
     widget=forms.EmailInput(attrs={'class': 'form-control'}), 
     required=True, 
     max_length=75) 
    reg_date = forms.DateField(widget=DateWidget(usel10n=True,bootstrap_version=3)) 

    class Meta: 
     model = Member 
     exclude = ['last_login', 'date_joined'] 
     fields = ['first_name', 'last_name', 'email', 'reg_date', ] 

Views.py

def member_edit(request, member_no): 
    member = Member.objects.get(member_no=member_no) 
    if request.method == 'POST': 
     form = RegForm(request.POST or None, instance=member) 
     if form.is_valid(): 
     member.first_name = form.request.POST['first_name'] 
     member.last_name = form.request.POST['last_name'] 
     member.email = form.request.POST['email'] 
     member.reg_date = form.request.POST['reg_date'] 
     member.save() 
     return redirect('member_overview') 
    return render(request, 'member/member_signup.html') 

urls.py

urlpatterns = [ 
    url(r'^member_edit/(?P<member_no>\d+)$', views.member_edit, name='member_edit') 
] 

member_edit.html

{% block body %} 
<h1 class="logo"><a href="{% url 'member_overview' %}">Members</a></h1> 
<div class="signup"> 
<h2>{% trans 'Update member' %}</h2> 
    <form action="{% url 'member_edit' member.member_no %}" method="post" role="form"> 
    {% csrf_token %} 
     {% for field in form.visible_fields %} 
     <div class="form-group{% if field.errors %} has-error{% endif %}"> 
      <label for="{{ field.label }}">{{ field.label }}</label> 
      <div class="col-sm-10"> 
       {{ field }} 
       {% if field.help_text %} 
       <span class="help-block">{{ field.help_text }}</span> 
       {% endif %} 
       {% for error in field.errors %} 
       <label class="control-label">{{ error }}</label> 
       {% endfor %} 
      </div> 
     </div> 
     {% endfor %} 
    <center> 
    <button type="submit" class="btn btn-primary">{% trans 'Update member' %}</button> 
    </center> 
    </form> 
</div> 
{% endblock body %} 

Answer 1

你不及格的形式在上下文（和模板名稱似乎是不正確的？）：

def member_edit(request, member_no): 
    member = Member.objects.get(member_no=member_no) 
    if request.method == 'POST': 
     form = RegForm(request.POST or None, instance=member) 
     if form.is_valid(): 
     # This isn't necessary - just save the form 
     #member.first_name = form.request.POST['first_name'] 
     #member.last_name = form.request.POST['last_name'] 
     #member.email = form.request.POST['email'] 
     #member.reg_date = form.request.POST['reg_date'] 
     #member.save() 
     form.save() 
     return redirect('member_overview') 
    # Instantiate the form 
    form = RegForm(instance=member) 
    # Add a dictionary for the context 
    return render(request, 'member/member_edit.html', {'form': form, 'member': member) 

你能做出這樣清潔劑（更容易），雖然與a generic class based view：

from django.views import generic 
from django.urls import reverse_lazy 

class UpdateMember(generic.UpdateView): 
    model = Member 
    form_class = RegForm 
    pk_url_kwarg = 'member_no' 
    template_name = 'member/member_edit.html' 
    success_url = reverse_lazy('member_overview') 

我想我有你需要的還有的所有屬性 - 你可以檢查出CCBV它是基於類的觀點一個很好的資源。

看看文檔上views and templates