Jinja - Is there any built-in variable to get current HTML page name?

Question

i\'m very new to Jinja and Flask

I want to set different background color in the navigation bar to indicate the current page.

Is there any built-in Jinja var

Answer 1

There is a trick in jinja2 document for your problem: http://jinja.pocoo.org/docs/tricks/

If your list is simple enough, just using request object, something like that:

    {{item.text}}
 

Normally, I write this snippet to a macro with an explicit argument to set active:

{% macro render_sitem(endpoint, display, cls='', icon-cls='', active='') %}

     {{display}}

{% endmacro %}

The list will be something like:

 

     {{render_sitem('page.index',  _('Pages'), icon-cls='icon-sitemap', active=active_page)}}
     {{render_sitem('post.index', _('Posts'), icon-cls='icon-file', active=active_page)}}
     {{render_sitem('user.index', _('Users'), icon-cls='icon-group', active=active_page)}}
 

So if you have a child page which extends or includes your list, you can set active item like:

{% set active_page = 'page.index' %} 

in the top of your child page.