Django 自定义小部件-如何正确地为小部件提供参数

如何正确地提供带有属性的自定义小部件？调用

print attrs

仅输出以下内容：

attrs in LockFlagWidget are:
{'id': u'id_lockedFlag'}

鉴于我希望：

attrs in LockFlagWidget are:
{'id': u'id_lockedFlag', 'size': u'80}

我编写了一个自定义小部件，如下所示：

class LockFlagWidget(forms.widgets.Widget):

    def render(self, name, value, attrs=None):
        if value is None:
                value = ''
        print "attrs in LockFlagWidget are:"
        print attrs
        staticURL = getattr(settings, 'STATIC_URL')

        if value != '':
            if value == True:
                return mark_safe(u"<img src=\"" + staticURL +
                                 "lock/img/lock_closed.ico\"/>"
                                 + "<span> - Is locked</span>")
            else:
                return mark_safe(u"<img src=\"" + staticURL +
                                 "lock/img/lock_open.ico\"/>"
                                 + "<span> - Is not locked</span>")

class LockForm(forms.ModelForm):
    class Meta:
        model = MyModel

    def __init__(self, *args, **kwargs):
        super(LockForm, self).__init__(*args, **kwargs)
        self.fields['lockedFlag'].widget = LockFlagWidget(attrs={'size':'80'})

class MyModel(models.Model):
    lockedFlag = models.BooleanField(default=False)

MyModel

如下所示：

class LockFlagWidget(forms.widgets.Widget):

    def render(self, name, value, attrs=None):
        if value is None:
                value = ''
        print "attrs in LockFlagWidget are:"
        print attrs
        staticURL = getattr(settings, 'STATIC_URL')

        if value != '':
            if value == True:
                return mark_safe(u"<img src=\"" + staticURL +
                                 "lock/img/lock_closed.ico\"/>"
                                 + "<span> - Is locked</span>")
            else:
                return mark_safe(u"<img src=\"" + staticURL +
                                 "lock/img/lock_open.ico\"/>"
                                 + "<span> - Is not locked</span>")

class LockForm(forms.ModelForm):
    class Meta:
        model = MyModel

    def __init__(self, *args, **kwargs):
        super(LockForm, self).__init__(*args, **kwargs)
        self.fields['lockedFlag'].widget = LockFlagWidget(attrs={'size':'80'})

class MyModel(models.Model):
    lockedFlag = models.BooleanField(default=False)

---

在我看来，传递到呈现方法中的属性是字段中的属性，而不是小部件，请尝试将打印语句更改为

print self.attrs

，这将拾取传递到小部件构造函数中的属性。希望这有意义