Re: when is failing to [URL]ize values in a comparison risky?
This WebDNA talk-list message is from 1999
It keeps the original formatting.
numero = 25406
interpreted = N
texte = John, so in this example-jpeacock@univpress.com wrote:> The appropriate way to test if a variable is not defined is to use the > [Raw][/Raw] tags like this: > > [ShowIf [aaa]=[Raw][aaa][/Raw]]Shown only if [aaa] has no value[/ShowIf]we are now properly checking for a not-yet-defined variable, but we lost the [URL] context! So it seems we are back to my initial question- (using the above example) is there ever a condition under which webcat will crash trying to evaluate the above (since we are not using the [URL] context) ??> > > Nonetheless, if you surrounded _BOTH_SIDES_ of the test with [URL], you are > always safe. In your example, the only time the test should be true is if the > field or variable [aaa] contains the value [Blank].or do you mean to do it like this-[ShowIf [URL][aaa][/URL]=[URL][Raw][aaa][/Raw][/URL]]Shown only if [aaa] has no value[/ShowIf]?? ------------------------------------------------------------- Brought to you by CommuniGate Pro - The Buzz Word Compliant Messaging Server. To end your Mail problems go to
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John, so in this example-jpeacock@univpress.com wrote:> The appropriate way to test if a variable is not defined is to use the > [raw][/Raw] tags like this: > > [ShowIf [aaa]=[raw][aaa][/Raw]]Shown only if [aaa] has no value[/ShowIf]we are now properly checking for a not-yet-defined variable, but we lost the [url] context! So it seems we are back to my initial question- (using the above example) is there ever a condition under which webcat will crash trying to evaluate the above (since we are not using the [url] context) ??> > > Nonetheless, if you surrounded _BOTH_SIDES_ of the test with [url], you are > always safe. In your example, the only time the test should be true is if the > field or variable [aaa] contains the value [Blank].or do you mean to do it like this-[ShowIf [url][aaa][/URL]=[url][raw][aaa][/Raw][/URL]]Shown only if [aaa] has no value[/ShowIf]?? ------------------------------------------------------------- Brought to you by CommuniGate Pro - The Buzz Word Compliant Messaging Server. To end your Mail problems go to .This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to
John Butler
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