Suggestions for structure of HTML-generating app

Bernard bernard.chhun at gmail.com
Tue Feb 5 22:14:15 CET 2008


On 5 fév, 10:09, "lanwrang... at gmail.com" <lanwrang... at gmail.com>
wrote:
> Hi,
>
> This isn't a strictly Python question but I wonder if someone could
> give me some clues here.  I've been writing a number of stand-alone
> apps that use CherryPy as an embedded web server for displaying
> processed data and interacting with the application.  To go along with
> this I've also been using CherryTemplate as a handy HTML template
> generator.
>
> My question is this - what's the best way to separate the application
> code from the UI generation code from the "raw" HTML?  To give you an
> idea what I mean, the core application code is fairly straightforward
> and writes to SQLite databases and/or dictionaries. That's the easy
> bit.
>
> The data then often needs a fair amount of massaging to make it
> suitable for display.  For example, one app I've got monitors network
> utilisation so writes bits-per-second values to SQLite.  The UI then
> takes those values and generates bar charts (done by cropping an image
> to size before putting it into a table cell), changes text colour if
> utilisation is >90% and so on etc.
>
> I've done this with lots of Python code embedded in the CherryTemplate
> pages but that becomes a real maintenance headache as the templates
> become huge and the code and HTML is scattered around with no clear
> distinction between the two.  I've also tried using pure-Python HTML
> generation functions that output, say, entire tables made up from the
> source data that are then called by the template, but then you end up
> with Python functions with lots of HTML embedded in them which, again,
> ends up being difficult to keep track of.
>
> Are there any good approaches of doing this kind of thing that I've
> missed, or am I resigned to having HTML and Python code mixed and so
> will just have to keep all that nastiness to as few modules as
> possible?
>
> Thanks,
>   Matthew.

we use Cheetah templates to do just that at my workplace.
we use CherryPy to generate the data and then we pass it on
to the Cheetah template which handles the data and add html over it.
here's an article on that matter : http://www.onlamp.com/pub/a/python/2005/01/13/cheetah.html









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