Python jinja2 模板中的“if”语句
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'if' statement in jinja2 template
提问by Luisito
I'm trying to write an if statement in jinja template
我正在尝试在 jinja 模板中编写 if 语句
{% for key in data %}
{% if key is 'priority' %}
<p>('Priority: ' + str(data[key])</p>
{% endif %}
{% endfor %}
the statement I'm trying to translate in python is
我试图在 python 中翻译的语句是
if key == priority:
print(print('Priority: ' + str(data[key]))
This is the error i'm getting:
这是我得到的错误：
TemplateSyntaxError: expected token 'name', got 'string'
TemplateSyntaxError：预期标记“名称”，得到“字符串”
回答by Nick
Why the loop?
为什么是循环？
You could simply do this:
你可以简单地这样做：
{% if 'priority' in data %}
<p>Priority: {{ data['priority'] }}</p>
{% endif %}
When you were originally doing your string comparison, you should have used ==instead.
当您最初进行字符串比较时，您应该使用它==。
回答by Michel Fernandes
We need to remember that the {% endif %}comes after the {% else %}.
我们需要记住的是，{% endif %}来到后{% else %}。
So this is an example:
所以这是一个例子：
{% if someTest %}
<p> Something is True </p>
{% else %}
<p> Something is False </p>
{% endif %}
