On Sun, Aug 19, 2001 at 06:29:44PM +0100, Norman Khine wrote:
i would like to create a validation rule for members to check a box that they have read the terms and conditions. what will be the easiest way to do in python or java validation is there any advantage / disadvantage for using either.
Here's what we did (for our non-public site, where anyone with access has a valid username/password combination -- it may not entirely apply in your situation): 1) The first page all of our users go to is called 'login' -- all it does is redirect them to the Agreement-check folder: /login ------ <dtml-var standard_html_header> <dtml-call "RESPONSE.redirect('/Agreements/')"> <dtml-var standard_html_footer> 2) In the index_html method of the Agreements folder, we see if there's an object in the folder that matches their username. That object's existence determines where we go next: either to the agreement form, or to a method that takes them to the real site. /Agreements/index_html ---------------------- <dtml-var standard_html_header> <dtml-call "REQUEST.set('username',AUTHENTICATED_USER.getUserName())"> <dtml-if "_.hasattr(PARENTS[0], username)"> <dtml-call "RESPONSE.redirect('/agreed')"> <dtml-else> <dtml-call "RESPONSE.redirect('agreement_form')"> </dtml-if> <dtml-var standard_html_footer> 3a) If they've already agreed to the terms, we take them onto the regular site. 3b) If they've not already agreed to the terms, we show them the terms and give them a pair of one-button forms at the bottom, something like: <form action="agree" method="post"> <input type="submit" Name="submit" value="I Agree"> </form> and <form action="disagree" method="post"> <input type="submit" Name="disagree" value="I Disagree"> </form> 4) The disagree method is very simple, it just redirects them back to the publicly-accessible /index_html method. The agree method is a bit more complicated, but not much. It also need a manager proxy role attached to it to do the actual object creation: <dtml-call "REQUEST.set('username',AUTHENTICATED_USER.getUserName())"> <dtml-call "manage_addFolder(id=username)"> <dtml-call "RESPONSE.redirect('/login')"> All we did was add a folder -- if there's a more secure object to add, let me know. Then we redirect back to the original /login method and it's as if they logged in again. They get transparently redirected to the real site. Things we'd like to improve: * fewer redirects -- Netscape/IE users never notice, but it's somewhat annoying when I'm working in Lynx. * there is no second thing. I suppose if you didn't have authenticated users, you could use the same logic to check for a cookie on their browser -- we had to allow for users who wouldn't have exclusive access to their computer (student labs, etc). -- Mike Renfro / R&D Engineer, Center for Manufacturing Research, 931 372-3601 / Tennessee Technological University -- renfro@tntech.edu