Tino Wildenhain wrote:
Hello,
Richard Moon wrote:
I feel there must be a way to emulate the browser 'back' button in Zope. Can anyone tell me if this is possible please ?
The reason is that I have a form, with input fields like
input name="address1" width=30 value="&dtml.missing-address1;">
Input from the form is validated in the dtml-method which receives the input from the form. So if a particular field is invalid I can tell the user to use their back button to return to the form. Using the &dtml.missing- means that other data already entered is re-displayed to the user. This is excellent stuff.
The structure that we use is to have the form post to itself and validate the input. ie. form/index_html looks like <dtml-if update.x> <dtml-if "not all_digits(entry)"> <dtml-call "REQUEST.set('errorMsg','Sorry, you must enter only digits')"> <dtml-elif "entry < 10"> <dtml-call "REQUEST.set('errorMsg','Sorry, the number is too small')"> </dtml-if> <dtml-if errorMsg> <dtml-var submit_page> <dtml-else> do the work with the form data <dtml-var results_page> </dtml-if> <dtml-else> <dtml-var submit_page> </dtml-if> form/submit page has the HTML form <form method="post"> <dtml-if errorMsg> <FONT color=red><dtml-var errorMsg></Font> </dtml-if> Enter the data <input type=password name="entry" size=8 maxlength=10> <input type=image name="update" src="images/continue" value="submit_pin" border="0"> </form> -- Rupert G. Goldie, Senior Software Engineer rgg@ekit-inc.com