Wagtail - 将参数传递给结构块

Question

我正在尝试将参数传递给结构块，该结构块也具有子结构块以通过选择块动态加载选择。用 init 方法尝试了这个概念，但还没有成功。下面是我的实现代码-

class DefaultThemeTemplate(blocks.StructBlock):
    template = blocks.ChoiceBlock(choices=[], label=_('Select a template'), required=False)

    def __init__(self, folder=None, **kwargs):
        self.template = blocks.ChoiceBlock(choices=get_designs(folder), label=_('Select a template'),
                                           required=False)
        super(DefaultThemeTemplate, self).__init__(**kwargs)

    class Meta:
        label = _('Default Theme')
        
        
class ThemeOneTemplate(blocks.StructBlock):
    template = blocks.ChoiceBlock(choices=[], label=_('Select a template'), required=False)

    def __init__(self, folder=None, **kwargs):
        self.template = blocks.ChoiceBlock(choices=get_designs(folder), label=_('Select a template'),
                                           required=False)
        super(ThemeOneTemplate, self).__init__(**kwargs)

    class Meta:
        label = _('Theme One')
        
        
class ThemeTwoTemplate(blocks.StructBlock):
    template = blocks.ChoiceBlock(choices=[], label=_('Select a template'), required=False)

    def __init__(self, folder=None, **kwargs):
        self.template = blocks.ChoiceBlock(choices=get_designs(folder), label=_('Select a template'),
                                           required=False)
        super(ThemeTwoTemplate, self).__init__(**kwargs)

    class Meta:
        label = _('Theme Two')


class Templates(blocks.StructBlock):
    default_theme = DefaultThemeTemplate(folder='', required=False)
    theme_one = ThemeOneTemplate(folder='', required=False)
    theme_two = ThemeTwoTemplate(folder='', required=False)

    def __init__(self, folder=None, **kwargs):
        self.default_theme = DefaultThemeTemplate(folder=folder, required=False)
        self.theme_one = ThemeOneTemplate(folder=folder, required=False)
        self.theme_two = ThemeTwoTemplate(folder=folder, required=False)
        super(Templates, self).__init__(**kwargs)

    class Meta:
        label = _('Template')
        
        
class StaticPage(Page):
    template = StreamField([
        ('template', Templates(required=False, folder='pages'))
    ], null=True, blank=True, verbose_name=_('Template'))

这是带有空白选项字段的屏幕截图 -

请帮我找出我在这里做错了什么。提前致谢。

Answer 1

如果您在 __init__ 方法中修改子块，您需要先调用 super()，然后在 self.child_blocks 字典中设置条目。设置self.template 将不起作用，因为处理所有命名属性并将它们转换为子块列表的代码已经在类定义时运行。

此外，您可能需要在您创建的块上调用set_name('template')。所以，类似：

def __init__(self, folder=None, **kwargs):
    super().__init__(**kwargs)
    template_block = blocks.ChoiceBlock(choices=get_designs(folder), label=_('Select a template'), required=False)
    template_block.set_name('template')
    self.child_blocks['template'] = template_block