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Posted on 2004-09-19
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Last Modified: 2013-12-24
We are having problems with users using the 'Back' button in their browser.

We have a page called EditInvoiceDistribution
within this page a user may need to edit a text field named "DistAmount" ; This is a numeric field only.
This field could be blank or it could be populated with existing numbers. A user will normally edit this field then they will click a button called 'Update'.

This action calls a page called EditUpdateInvoicedDistribution, which takes the figures from DistAmount and updates it in a couple tables. After the update, the page is immediately redirected to another page - EditVendorInvoice - so the user can see the changes they made.

On with the problem: Occasionally users will click the browsers back button to edit the change again. When they do this it opens the page from before called EditInvoiceDistribution - and the original numeric value appears from before in the "DistAmount" field! - NOT the value they just entered..... so they enter in a different value, click 'Update' etc. etc. This is causing  inaccurate data - which we all know can be a serious problem. Does anyone have any suggestions as to how I can prevent this from happening? If code is needed please let me know - there is quite a bit though.

Thanks
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Question by:stltodaycom
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anandkp earned 125 total points
ID: 12099607
u cld avoid this by the way u write ur code - so that the back/refresh button is ineffective

but u cld avoid caching of the intermediate page ... so that incase they use the back button - they get a fresh copy of the intermediate page.
<cfheader name="Expires" value="-1">
<cfheader name="ExpiresAbsolute" value="Now() - 1">
<cfheader name="pragma" value="no-cache">
<cfheader name="cache-control" value="private">
<cfheader name="CacheControl" value="no-cache">

lemme know ...
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