Re: apparent variable variable display?
This WebDNA talk-list message is from 2000
It keeps the original formatting.
numero = 31322
interpreted = N
texte = John that makes total sense, but then why does-[showif [Header1]=[raw][Header1][/raw]] > do stuff > [/showif]do the stuff?!! I swear it does, and when I set that header I use- [SetHeader cart=[cart]]Header1=[free][/SetHeader]...so that eliminates the chance that I have given Header1 a literal value of [Header1] (plus I just opened the orderfile with a text editor and the value of Header1 is 0)I don't understand how that showif can be true, but it is somehow. The exact code (on a SSL page, Linux, webcat 3.08) is-[!]=======Do this if IE is force reloading this page from the server when user hits back/forward button, then javascript jumps back a page =======[/!] [showif [Header1]=[raw][Header1][/raw]] [/showif]could you try it as I have it?-JohnJohn Peacock wrote:> In Perl, this would be the difference between defined and exists. In > your case, [Header40] is always defined (when in an order context). The > test [showif [header40]=] should do what you want. Only if a variable > has never been defined (i.e. never used) will > > [Header1]=[raw][Header1][/raw] > > be true > > John Peacock > > John Butler wrote: > > > > I finding something inconsistent, tho it might be my brain...? > > I want to do something if one of the orderfile headers has not yet been given a value. > > I have successfully been using this- > > > > [showif [Header1]=[raw][Header1][/raw]] > > do stuff > > [/showif] > > > > But when I stick this on my template- > > > > Header40=[Header40] > > > > Then it returns- > > Header40= > > > > so which is it? Do undefined orderfile headers display as the null string (like empty > > db fields), or do they display as uninitialized vars, like [somevar]? > > If the former then why does my showif above evaluate to true? > > > > -John > > > > ------------------------------------------------------------- > > This message is sent to you because you are subscribed to > > the mailing list
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John that makes total sense, but then why does-[showif [Header1]=[raw][Header1][/raw]] > do stuff > [/showif]do the stuff?!! I swear it does, and when I set that header I use- [SetHeader cart=[cart]]Header1=[free][/SetHeader]...so that eliminates the chance that I have given Header1 a literal value of [Header1] (plus I just opened the orderfile with a text editor and the value of Header1 is 0)I don't understand how that showif can be true, but it is somehow. The exact code (on a SSL page, Linux, webcat 3.08) is-[!]=======Do this if IE is force reloading this page from the server when user hits back/forward button, then javascript jumps back a page =======[/!] [showif [Header1]=[raw][Header1][/raw]] [/showif]could you try it as I have it?-JohnJohn Peacock wrote:> In Perl, this would be the difference between defined and exists. In > your case, [Header40] is always defined (when in an order context). The > test [showif [header40]=] should do what you want. Only if a variable > has never been defined (i.e. never used) will > > [Header1]=[raw][Header1][/raw] > > be true > > John Peacock > > John Butler wrote: > > > > I finding something inconsistent, tho it might be my brain...? > > I want to do something if one of the orderfile headers has not yet been given a value. > > I have successfully been using this- > > > > [showif [Header1]=[raw][Header1][/raw]] > > do stuff > > [/showif] > > > > But when I stick this on my template- > > > > Header40=[Header40] > > > > Then it returns- > > Header40= > > > > so which is it? Do undefined orderfile headers display as the null string (like empty > > db fields), or do they display as uninitialized vars, like [somevar]? > > If the former then why does my showif above evaluate to true? > > > > -John > > > > ------------------------------------------------------------- > > 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 > > ------------------------------------------------------------- > 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 ------------------------------------------------------------- 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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