Question

正如您在html下面看到的那样，我的代码根据数据生成一个表，每行中都有一个表单。当您提交表单时，它会根据它所在的行发布数据。这很有效。但是，我需要字段中的初始数据对于每一行是不同的。它必须是基于与行关联的数据的计算值。是否可以使用一些django模板代码来设置它？或者是否有一种方法可以从视图中传递该值？

{% for liquor in filter %}

<tr>
<td>{{ liquor.LiquorCode }}</td>
<td><a href="/liquors/get/{{ a.StoreID }}/{{ liquor.id }}/{{ SPI }}/">{{ liquor.BrandName }}</a></td>
<td>{{ liquor.VendorName }}</td>
<td>{{ liquor.LiquorType }}</td>
<td>{{ liquor.Proof }}</td>
<td>{{ liquor.BottleSize }}</td>
<td>{{ liquor.PackSize }}</td>
<td>{{ liquor.OffPremisePrice }}</td>
<td>{{ liquor.ShelfPrice }}</td>
<td>{{ liquor.GlobalTradeItemNumber1 }}</td>
<td><form action="/stores/quickadd/{{ a.StoreID }}/{{ liquor.id }}/{{ SPI }}/" method="post">{% csrf_token %}

{{form.as_p}}


<input type="submit" name="submit" value="Add to Store"></td>
</tr>

    {% endfor %}

以下是我的观点：

def product_list(request, store_id):
    store = Store.objects.get(StoreID=store_id)
    f = ProductFilter(request.GET, queryset=Liquor.objects.all())
    LiqSPI = StoreLiquor.objects.filter(storeID=store_id).count()
    AddLiqForm = AddLiquorForm()

    args = {}
    args['filter'] = f
    args['a'] = store
    args['SPI'] = LiqSPI + 1
    args['form'] = AddLiqForm
    return render(request,'UPC_filter.html', args)

def quickadd(request, store_id, liquor_id, SPI):
    storeID = Store.objects.get(StoreID=store_id)
    liquorID = Liquor.objects.get(id=liquor_id)
    if request.method == "POST":
        AddLiqForm = AddLiquorForm(request.POST)
        if AddLiqForm.is_valid():
            StoreLiqID = AddLiqForm.save(commit=False)
            StoreLiqID.storeID = storeID
            StoreLiqID.liquorID = liquorID
            StoreLiqID.StorePrice = request.POST.get('StorePrice', '')
            StoreLiqID.SPI = SPI
            StoreLiqID.save()
            return HttpResponseRedirect('/stores/UPC_Scan/%s' % store_id)

Answer 1

根据您的代码，我可以看到您正在使用名为AddLiquorForm的django形式如果要在表单加载时填充初始数据，可以使用为表单（AddLiquorForm）编写的类的 _ init 方法。

class AddLiquorForm(forms.ModelForm):
    #code responsible to  create form fields 
    def __init__(self, user, *args, **kwargs):
        super(AddLiquorForm, self).__init__(*args, **kwargs)
        self.fields['field1'].initial = 'whatever you want'                                        
        self.fields['field2'].initial = 'whatever you want'
        self.fields['field3'].initial = 'whatever you want'
        # other fields

Answer 2

要根据Liquor模型中的存储值显示计算值，您可以使用模型属性。

请参阅https://docs.djangoproject.com/en/dev/topics/db/models/#model-methods

E.g。

class Liquor(models.Model):
""" Your fields up here.. liquor_code, liquor_type, proof """ 

    def _get_breed_proof(self):
        "Returns the liquor type + proof."
        return '%s %s' % (self.proof, self.liquor_type)
    breed_proof = property(_get_breed_proof)

然后，您可以在模板中使用任何其他模型属性 - liquor.breed_proof。

django表单：在同一页面上设置不同的初始表单值

2 个答案: