djangoformat_htmlflatatt函数-创新互联
Django中的常用的函数format_html,用于格式化生成html模板

def format_html(format_string, *args, **kwargs):
"""
Similar to str.format, but passes allarguments through conditional_escape,
and calls 'mark_safe' on the result. Thisfunction should be used instead
of str.format or % interpolation to buildup small HTML fragments.
"""
args_safe = map(conditional_escape, args)
kwargs_safe = {k: conditional_escape(v) for(k, v) in six.iteritems(kwargs)}
return mark_safe(format_string.format(*args_safe,**kwargs_safe))可以看到文档说明,format_html类似于str.format函数,格式化生成html元素。
select_html=format_html(‘
另外一个函数flatatt函数,将字典转换为单个字符串 key=”value”的形式,,如 {‘height’:30,’width’:20,’required’:True},将会转换为字符串‘height=20 widt=30 requried’
def flatatt(attrs):
"""
Convert adictionary of attributes toa single string.
The returnedstring will contain aleading space followed by key="value",
XML-stylepairs.It is assumed that the keys do not need to beXML-escaped.
If thepassed dictionary is empty,then return an empty string.
The resultis passed through'mark_safe'.
"""
key_value_attrs = []
boolean_attrs = []
for attr,value in attrs.items():
if isinstance(value, bool):
if value:
boolean_attrs.append((attr,))
else:
key_value_attrs.append((attr,value))
return (
format_html_join('', ' {}="{}"', sorted(key_value_attrs)) +
format_html_join('', ' {}', sorted(boolean_attrs))另外有需要云服务器可以了解下创新互联scvps.cn,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。
分享标题:djangoformat_htmlflatatt函数-创新互联
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