在Django中,在模板中有简单的方法来将文本字段渲染为模板吗? [英] In Django, is there an easy way to render a text field as a template, in a template?
问题描述
我知道如何在视图中做到这一点, m寻找模板过滤器或标签?
某些东西:
{object.textfield | evaluate}}
或
{%evaluate object.textfield%}
与object.textfield包含以下内容:
带有{%TemplateTag%}的文本。 / code>
其中 TemplateTag
将被评估,感谢评估
过滤器。
这是解决我的问题的第一个Tag实现:
从django导入模板
register = template.Library()
@register。标签(name =评估)
def do_evaluate(解析器,令牌):
标签用法{%evaluate object.textfield%}
try:
tag_name,v ariable = token.split_contents()
除了ValueError:
raise template.TemplateSyntaxError,%r标签需要一个参数%token.contents.split()[0]
return EvaluateNode
class EvaluateNode(template.Node):
def __init __(self,variable):
self.variable = template.Variable(variable)
def render(self,context):
try:
content = self.variable.resolve(context)
t = template.Template(content)
return t.render上下文)
除了template.VariableDoesNotExist,template.TemplateSyntaxError:
return'错误渲染',self.variable
Can you think of an easy way to evaluate a text field as a template during the template rendering.
I know how to do it in a view but I'm looking for a template Filter or a Tag ?
Something like:
{{ object.textfield|evaluate}}
or
{% evaluate object.textfield %}
with object.textfield containing something like:
a text with a {% TemplateTag %}.
In which TemplateTag
will be evaluated, thanks to the evaluate
filter.
Here is a first Tag implementation to solve my question:
from django import template
register = template.Library()
@register.tag(name="evaluate")
def do_evaluate(parser, token):
"""
tag usage {% evaluate object.textfield %}
"""
try:
tag_name, variable = token.split_contents()
except ValueError:
raise template.TemplateSyntaxError, "%r tag requires a single argument" % token.contents.split()[0]
return EvaluateNode(variable)
class EvaluateNode(template.Node):
def __init__(self, variable):
self.variable = template.Variable(variable)
def render(self, context):
try:
content = self.variable.resolve(context)
t = template.Template(content)
return t.render(context)
except template.VariableDoesNotExist, template.TemplateSyntaxError:
return 'Error rendering', self.variable
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