Question

Python中的变量：

names = ["a", "b"]

我目前在Jinja2模板中写的内容：

c({{ names | join(",") }})

我使用上面的模板获得了什么：

c(a, b)

然而，我真正需要的是：

c("a", "b")

我检查了Jinja2的文档，但没有找到过滤器来执行此操作。有没有人在Jinja2中有这个想法？

Answer 1

为jinja2使用自定义过滤器：

def surround_by_quote(a_list):
    return ['"%s"' % an_element for an_element in a_list]

env.filters["surround_by_quote"] = surround_by_quote

Answer 2

# some.py file
names = ['a', 'b', 'c']

# some.html file
{{ names|safe }}

# renders as the following, brackets included
['a', 'b', 'c']

Answer 3

在ansible中用作filter_plugin并传递pylint：

''' From https://stackoverflow.com/a/68610557/571517 '''


class FilterModule():
    ''' FilterModule class must have a method named filters '''
    @staticmethod
    def surround_by_quotes(a_list):
        ''' implements surround_by_quotes for each list element '''
        return ['"%s"' % an_element for an_element in a_list]

    def filters(self):
        ''' returns a dictionary that maps filter names to
        callables implementing the filter '''
        return {'surround_by_quotes': self.surround_by_quotes}

在jinja2的列表中为每个字符串添加配额？

3 个答案: