Django视图未返回httpresponse

您处理请求是否为POST的情况,但未处理表单的条件(内部if else条件) 无效的 。

 if form.is_valid():
        name=form.cleaned_data['name']
        qty=form.cleaned_data['qty']
        unit=form.cleaned_data['unit']
        t= NewMaterial(name=name,qty=qty,unit=unit)
        t.save()
        return HttpResponseRedirect(reverse('material'))
 else:
    # NEED HANDLE THIS CASE WHEN FORM ISN'T VALID
    # DISPLAY ERRORS/REMINDERS ON THE SAME PAGE, ALARM USER THE INPUT
    # ARE INVLID

什么时候 not form.is_valid() ,您不返回任何 HttpResponse 。。。

def novo_material(request):
    current_page='material'
    if request.method =='POST':
        form = SystemInventoryUpdate(request.POST)
        if form.is_valid():
            name=form.cleaned_data['name']
            ''''''
            t= NewMaterial(name=name,qty=qty,unit=unit)
            t.save()
            return HttpResponseRedirect(reverse('material'))

        # No need to add `else` statement, the `return HttpResponseRedirect` above stops the `if`
        # when form is invalid, it will jump to return render, with form validations generated by Django


    else:
        form=NewMaterial()
    return render(request,'novo_material.html',{'form':form})