主Jinja模板中的逻辑(Logic in Primary Jinja Template)

 在我的app.py文件中，我将导航存储在dict中。 键是主导航键，值是子菜单。 
 
navigation = {"Search": ["Google","Yahoo","Bing"]}
 
 在我的layout.html模板（我的主模板文件）中，我想调用dict来生成导航。 对我而言，这样做是有意义的，因为它将贯穿每一页。 但是，对于我所拥有的每个视图，我都必须定义“导航”。 这似乎是多余的和不必要的。 
 
 这引出了我的问题，构建网站的适当方式是什么。 我不想硬编码每个链接。 如果我决定更改应用程序提供的内容，我希望更改为跨站点级联到我正在使用导航词典的所有其他区域。 
 
 结构示例： 
 
#app.py
navigation = {"Search": ["Google","Yahoo","Bing"]}
def my_view():
    return render_template('my_view.html')

#layout.html
{% for link in navigation %}
    {{ link }}
{% endfor %}
 
 要解决我的问题，我只需要将全局导航添加到视图中。 
 
return render_template('my_view.html', navigation=navigation)
 
 我不想为每个视图添加导航。 感觉多余，尤其是当您可以拥有数十个视图时。 

In my app.py file, I've stored my navigation in a dict. The keys being the main navigation and the values being the submenus.
 
navigation = {"Search": ["Google","Yahoo","Bing"]}
 
In my layout.html template (my primary template file) I want to call the dict to generate my nav. To me it makes sense to do this since it will be persistent across every page. However, for every view I have I will have to define "navigation". Which seems redundant and unecessary.
 
That leads me to my question, what is the appropriate way to structure the site. I don't want to hardcode every link. If I decide to change what the app offers, I would like the change to cascade across the site to all the other areas I'm using the navigation dict.
 
Example of the structure:
 
#app.py
navigation = {"Search": ["Google","Yahoo","Bing"]}
def my_view():
    return render_template('my_view.html')

#layout.html
{% for link in navigation %}
    {{ link }}
{% endfor %}
 
To resolve my issue I just have to add the navigation global to the view.
 
return render_template('my_view.html', navigation=navigation)
 
I don't want to add navigation to every view. It feels redundant especially when you could have dozens of views.

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