在Django中自定义标签标签

Question

我正在尝试通过添加自定义类并使用titlecase而不是仅将首字母大写来定制为表单编写标签的方式。

为此，我编写了自定义过滤器label_with_classes()，它实际上是Django Boundfield.label_tag的包装：

from django import template
from django.forms import ChoiceField, BooleanField, DateField, ImageField
from dashboard.forms.widgets import DateFilterWidget, CheckboxSelectDropdown
from titlecase import titlecase

register = template.Library()


def pretty_name(name):
    """Convert 'first_name' to 'First Name'."""
    return titlecase(name.replace('_', ' '))


def should_be_active(bound_field):
    '''Determine whether the field's label should have Material's "active" class added to it'''
    if isinstance(bound_field.field.widget, (DateFilterWidget, CheckboxSelectDropdown)):
        return True
    return (bound_field.value() and not isinstance(bound_field.field, (ChoiceField, BooleanField)))\
        or isinstance(bound_field.field, (DateField, ImageField))


@register.filter(is_safe=True)
def label_with_classes(bound_field, contents=None):
    '''Extend Django's label_tag() method to provide the appropriate Materialize CSS classes'''
    if not bound_field:
        return ''
    active = 'active' if should_be_active(bound_field) else ''
    invalid = 'invalid' if bound_field.errors else ''
    classes = f"{active} {invalid}".strip()
    if bound_field.name == 'salesforce_id':
        import ipdb; ipdb.set_trace()
    contents = contents or pretty_name(bound_field.label)
    return bound_field.label_tag(attrs={'class': classes},
                                 contents=contents,
                                 label_suffix='')

在其中设置了特定字段的跟踪记录。

我正在尝试显示具有以下Company的{​​{1}}模型的通用视图：

ModelForm

以下是使用这种形式的通用class CompanyForm(forms.ModelForm): class Meta: model = Company fields = [ 'name', 'salesforce_id', 'contract_in_place', 'default_package', 'important', 'implementation_date', 'contact', 'customer_notes', 'email_domains', 'lucy_guide', ] labels = { 'salesforce_id': "Salesforce ID", 'contract_in_place': "Contract In Place", } implementation_date = DateField(required=False) email_domains = SimpleArrayField( forms.CharField(max_length=255), required=False, label="Email Domains -- separate multiple with commas (hicleo.com,startwithcleo.com)") lucy_guide = forms.ModelChoiceField( queryset=User.objects.exclude(lucyguide=None).order_by('first_name'), required=True, empty_label='Select a Guide', label="Cleo Guide") def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.fields['default_package'].queryset = self.instance.package_set ：

UpdateView

这是模板：

class EditViewsMixin(DashboardAccessMixin, SuccessMessageMixin):
    model = Company
    success_url = reverse_lazy('dashboard:companies')
    form_class = CompanyForm

class CompanyUpdate(EditViewsMixin, UpdateView):
    template_name = 'companies/edit.html'
    success_message = "Company '%(name)s' was updated successfully"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)

        context['packages'] = self.object.package_set.order_by('name')

        return context

问题在于表单看起来像这样：

问题在于所有标签仍在{% load widget_tweaks %} {% load custom_errors label_with_classes %} {% csrf_token %} <div class="row"> <div class="input-field col s12"> {{ form.name|add_error_class:"invalid" }} {{ form.name|custom_errors }} {{ form.name|label_with_classes }} </div> </div> <div class="row"> <div class="input-field col s12"> {{ form.salesforce_id|add_error_class:"invalid" }} {{ form.salesforce_id|custom_errors }} {{ form.salesforce_id|label_with_classes }} </div> </div> <div class="row"> <div class="input-field col s6"> <div class="radio-wrapper"> {{ form.contract_in_place }} {{ form.contract_in_place|label_with_classes }} </div> </div> <div class="input-field col s6"> <div class="radio-wrapper"> {{ form.important }} {{ form.important|label_with_classes }} </div> </div> </div> {% if packages %} <div class="row"> <div class="input-field col s12"> {{ form.default_package|add_error_class:"invalid" }} {{ form.default_package|custom_errors }} {{ form.default_package|label_with_classes }} </div> </div> {% endif %} <div class="row"> <div class="input-field col s12"> <span class="datetime-caret">▼</span> {{ form.implementation_date|add_class:"datepicker"|add_error_class:"invalid"|attr:"placeholder:Select a Date" }} {{ form.implementation_date|label_with_classes }} </div> </div> <div class="row"> <div class="input-field col s12"> {{ form.contact|add_class:"materialize-textarea" }} {{ form.contact|label_with_classes }} </div> </div> <div class="row"> <div class="input-field col s12"> {{ form.lucy_guide|add_error_class:"invalid" }} {{ form.lucy_guide|custom_errors }} {{ form.lucy_guide|label_with_classes }} </div> </div> <div class="row"> <div class="input-field col s12"> {{ form.email_domains }} {{ form.email_domains|custom_errors }} {{ form.email_domains|label_with_classes }} </div> </div> <div class="row"> <div class="input-field col s12"> {{ form.customer_notes|add_class:"materialize-textarea" }} {{ form.customer_notes|label_with_classes }} </div> </div> d，而我希望如果在titlecase选项中提供了标签（如https://docs.djangoproject.com/en/2.0/topics/forms/modelforms/#overriding-the-default-fields所述），按原样使用，不带标题框。

但是，我正在努力寻找如何在labels函数中进行区分的方法。如果我进入调试器，即使我自己没有定义标签（例如，为label_with_classes字段），我也会看到该标签已经由Django生成：

name

在这种情况下，我如何区分自己生成的标签（通过字段构造函数中的> /Users/kurtpeek/Documents/Dev/lucy2/lucy-web/dashboard/templatetags/label_with_classes.py(37)label_with_classes() 36 import ipdb; ipdb.set_trace() ---> 37 contents = contents or pretty_name(bound_field.label) 38 return bound_field.label_tag(attrs={'class': classes}, ipdb> bound_field.name 'name' ipdb> bound_field.label 'Name' ipdb> bound_field.field.label 'Name' 关键字参数或label中的labels选项）与自动生成的标签之间是Django吗？