Articles Tagged dynamic-menu
On large django projects it is more likely that to generate a single webpage multiple queries over large datasets and complex data processing must be involved. In such cases -were performance is an issue-, the use of caching techniques can really save the day. Django provides a solid framework for caching, allowing for the storage/retrieval of single values (e.g. the result of complex database queries), html code fragments (e.g. the 'footer' of your webpage) or even entire django views.
In today's article we'll examine a way to cache our menu (consider a tree-menu application like the one described in this yawd blog article or the django-treemenus application) in order to reduce loading times and save db server load. Although this appears to be a fairly straight-forward task, a couple of decisions can be tricky.Posted on November 9th, 2011 by Pantelis Petridis
Although there exist several django menu applications -the excellent django-treemenus is one of them-, they all require that the user explicitly sets the menu structure. Consider the following scenario in a django CMS application: The user will probably be able to define a list of article categories -and sub-categories- and will also write a bunch of articles tied to each one of these categories. At the same time, this hypothetical user would also be able to use a blogging engine and publish his thoughts. Let's assume that the user wants to add an article category to the menu and use its sub-categories as sub-menuitems. He also wants to add a link to the blog main page and use the most popular tags as sub-menuitems. To accomplish this he must manually define a menuitem for each menu link and map it to the corresponding url, which is less than ideal. In this article, we will demonstrate a menu application that would enable the user to define a top-level item -e.g. an article category- and optionally have all children items automatically inherited from the corresponding parent element.Posted on May 20th, 2011 by Pantelis Petridis