> -----Original Message----- > From: django-users@googlegroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of maria > Sent: 10 July 2008 12:41 > To: Django users > Subject: Django and DateBase refresh > > > I am really new in Django but I really want to know what > should I do to build web application, which would be reload > automatically because datebase would be changing continuously. > Could somebody help me? > plx > > > >
Hi Maria, Are you sure this is what you want to do? It is the kind of thing that should only really happen if a user wants to open one page and leave it there for a long period of time (without navigating between pages), but have it update as soon as new data comes in. The only real life example of this I can think of is gmail. If this is really what you want to do, it sounds like you need to use some client-side scripting, or AJAX. If you are wanting a web app that will refresh every 5 or so minutes (for example), you could just set some kind of script that will tell the users browser to refresh on a timer. This is not a great idea because it is quite disruptive for the user - and the javascript can be evil. Using AJAX would be less disruptive to the user, but quite complicated. What would probably happen, is the client-side javascript would query the server-side script (your python code) every so often, to query the db, and see if any new data has been entered, then your server-side script would present the data in text, html or xml (if there is new data) back to the client-side script, which would put it where you want on the page. If you do go down this route, I would use something like Protoculous. There is a good django / AJAX tutorial here: http://www.willarson.com/blog/?p=36. I tend to use AJAX for fetching extra info on a page, performing an action without navigating away (think poking of facebook), or creating dynamic dropdown lists based on user actions or something. If your user is going to navigate between pages, the pages will be generated using the data in the db at time of loading, so it should be reasonably up to date. This is what most webapps do in my experience, and also what most users expect to happen. HTH, Em --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
