如果我们传入模板中不存在的变量，则会在jinja中引发异常 [英] raise an exception in jinja if we passed in a variable that is not present in the template

问题描述

当我们传递模板中不存在的变量时，jinja2是否存在引发异常的方法?

Is there a method for jinja2 to raise an exception when we pass a variable that is not present in the template?

PS:这与在模板中存在变量但未传递变量时引发异常不同(或相反).为此，我使用"undefined = StrictUndefined"

PS: This is different(or opposite) from raising an exception when a variable is present in the template but it is not passed. For this I use "undefined=StrictUndefined"

推荐答案

在加载jinja2.Environment时，请将"undefined"参数设置为"jinja2.StrictUndefined"，例如:

When you load your jinja2.Environment, set the 'undefined' parameter to 'jinja2.StrictUndefined', e.g.:

env = jinja2.Environment(loader=<someloader>, undefined=jinja2.StrictUndefined)

您可以捕获并检查渲染异常以查看缺少的内容

You can catch and examine the render exception to see what was missing

编辑，如果我阅读了您的完整问题，将会有所帮助. :)

EDIT It would help if I read your full question. :)

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