删除django ModelForm中的实例

Question

我正在尝试删除 django ModelForm 中的实例表单，但它没有删除，不过，更新部分工作正常。

我的views.py:

def update_component(request, pk):
    component = Component.objects.all()
    component_id = Component.objects.get(id=pk)
    form = ComponentModelForm(instance=component_id)
    if request.method=='POST' and 'form-update' in request.POST:
        form = ComponentModelForm(request.POST,request.FILES, instance=component_id)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect(request.path_info)
    if request.method=='POST' and 'form-delete' in request.POST:
        form.delete()
        return redirect('/maintenance')
    context = {
        'components': component,
        'form': form,
        'component_id':component_id,
    }        
    return render(request, 'update_component.html', context)

删除表单：

    <form class="component-delete-button"><input name="form-delete" type="submit"
    class="button1" value='Delete Component' /></form>

Answer 1

删除项目不需要表单：表单是一种处理 HTML 表单输入并将其转换为更易于 Python 访问的数据的方法。

在删除的情况下，您删除实例，因此：

def update_component(request, pk):
    component = Component.objects.all()
    component_id = Component.objects.get(id=pk)
    form = ComponentModelForm(instance=component_id)
    if request.method=='POST' and 'form-update' in request.POST:
        form = ComponentModelForm(request.POST,request.FILES, instance=component_id)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect(request.path_info)
    if request.method=='POST' and 'form-delete' in request.POST:
        <strong>component_id.delete()</strong>
        return redirect('/maintenance')
    context = {
        'components': component,
        'form': form,
        'component_id':component_id,
    }        
    return render(request, 'update_component.html', context)

删除django ModelForm中的实例

Delete instance in django ModelForm

django

django-models

django-views

django-templates