Re: [WebDNA] showif with empty variable
This WebDNA talk-list message is from 2015
It keeps the original formatting.
numero = 112180
interpreted = N
texte = Nice Brian! we think alike. On looking at my IsSet function, which is similar to yours..=20 I do rather: [then]T=3DT[/then] [else]T=3DF[/then] This makes my call look something like this: [showif [IsSet selector]] [include file=3Dblank_page.inc] [/showif] Sincerely, Donovan On Mar 13, 2015, at 7:33 PM, Brian Burton
wrote: > This is what I use >=20 > [function name=3D?] > [!] return T/F based on if a field exists and has a value[/!] > [!] incoming variables: the name of the field to be tested i.e. [? = field] [/!] > [If = ("[url][interpret][[params_string]][/interpret][/url]"!"%5B[interpret][par= ams_string][/interpret]%5D") & = ("[url][interpret][[params_string]][/interpret][/url]"!"")] > [Then][return]T[/return][/Then] > [Else][return]F[/return][/Else] > [/If] > [/function] >=20 > usage: [showif [? selector]=3DF] [include blank_page.inc] [/showif] >=20 >=20 >=20 >=20 >> On Mar 13, 2015, at 6:25 PM, Terry Wilson wrote: >>=20 >> I've never had a problem with this by url'ing the variable if there's = a chance it will contain an exclamation point, equal sign or some other = comparison symbol, which would cause a false comparison. If the variable = is a known quantity, such as a variable you feed it from a form value or = otherwise explicitly set (as it appears to be here), then there's no = need to waste your time with unnecessary [url]ing. Another simpler way = is to reverse the comparison: >>=20 >>> [showif =3D[selector]] >>=20 >> This way, even if it is something that could contain problematic = characters, they will come after the =3D and not cause a problem. >>=20 >> I'm curious if this isn't working, or if you are just wondering out = loud before coding it. >>=20 >> Terry >>=20 >> Sent from my iPad >>=20 >> On Mar 13, 2015, at 3:59 PM, Steve Braun = wrote: >>=20 >>> Hi All, >>> I am having an 'age-old' problem with webDNA. >>> I want to use a showif tag with an empty variable. >>> I've read some of the archives, but they don't seem to apply. >>>=20 >>> This works: >>> [showif [selector]=3Dhome] [include home_page.inc] [/showif] =20= >>> [showif [selector]=3Dlocal] [include local_page.inc] [/showif] = =20 >>>=20 >>> How do I make this work? >>> [showif [selector]=3D] [include blank_page.inc] [/showif] =20 >>>=20 >>> Thanks for any assistance. >>>=20 >>> Stephen F Braun >>> sbraun1@twcny.rr.com >>> --------------------------------------------------------- This = message is sent to you because you are subscribed to the mailing list . = To unsubscribe, E-mail to: archives: = http://mail.webdna.us/list/talk@webdna.us Bug Reporting: = support@webdna.us >> --------------------------------------------------------- This = message is sent to you because you are subscribed to the mailing list . = To unsubscribe, E-mail to: archives: = http://mail.webdna.us/list/talk@webdna.us Bug Reporting: = support@webdna.us >=20 > --------------------------------------------------------- This message = is sent to you because you are subscribed to the mailing list . To = unsubscribe, E-mail to: archives: = http://mail.webdna.us/list/talk@webdna.us Bug Reporting: = support@webdna.us
Associated Messages, from the most recent to the oldest:
Nice Brian! we think alike. On looking at my IsSet function, which is similar to yours..=20 I do rather: [then]T=3DT[/then] [else]T=3DF[/then] This makes my call look something like this: [showif [IsSet selector]] [include file=3Dblank_page.inc] [/showif] Sincerely, Donovan On Mar 13, 2015, at 7:33 PM, Brian Burton wrote: > This is what I use >=20 > [function name=3D?] > [!] return T/F based on if a field exists and has a value[/!] > [!] incoming variables: the name of the field to be tested i.e. [? = field] [/!] > [If = ("[url][interpret][[params_string]][/interpret][/url]"!"%5B[interpret][par= ams_string][/interpret]%5D") & = ("[url][interpret][[params_string]][/interpret][/url]"!"")] > [Then][return]T[/return][/Then] > [Else][return]F[/return][/Else] > [/If] > [/function] >=20 > usage: [showif [? selector]=3DF] [include blank_page.inc] [/showif] >=20 >=20 >=20 >=20 >> On Mar 13, 2015, at 6:25 PM, Terry Wilson wrote: >>=20 >> I've never had a problem with this by url'ing the variable if there's = a chance it will contain an exclamation point, equal sign or some other = comparison symbol, which would cause a false comparison. If the variable = is a known quantity, such as a variable you feed it from a form value or = otherwise explicitly set (as it appears to be here), then there's no = need to waste your time with unnecessary [url]ing. Another simpler way = is to reverse the comparison: >>=20 >>> [showif =3D[selector]] >>=20 >> This way, even if it is something that could contain problematic = characters, they will come after the =3D and not cause a problem. >>=20 >> I'm curious if this isn't working, or if you are just wondering out = loud before coding it. >>=20 >> Terry >>=20 >> Sent from my iPad >>=20 >> On Mar 13, 2015, at 3:59 PM, Steve Braun = wrote: >>=20 >>> Hi All, >>> I am having an 'age-old' problem with webDNA. >>> I want to use a showif tag with an empty variable. >>> I've read some of the archives, but they don't seem to apply. >>>=20 >>> This works: >>> [showif [selector]=3Dhome] [include home_page.inc] [/showif] =20= >>> [showif [selector]=3Dlocal] [include local_page.inc] [/showif] = =20 >>>=20 >>> How do I make this work? >>> [showif [selector]=3D] [include blank_page.inc] [/showif] =20 >>>=20 >>> Thanks for any assistance. >>>=20 >>> Stephen F Braun >>> sbraun1@twcny.rr.com >>> --------------------------------------------------------- This = message is sent to you because you are subscribed to the mailing list . = To unsubscribe, E-mail to: archives: = http://mail.webdna.us/list/talk@webdna.us Bug Reporting: = support@webdna.us >> --------------------------------------------------------- This = message is sent to you because you are subscribed to the mailing list . = To unsubscribe, E-mail to: archives: = http://mail.webdna.us/list/talk@webdna.us Bug Reporting: = support@webdna.us >=20 > --------------------------------------------------------- This message = is sent to you because you are subscribed to the mailing list . To = unsubscribe, E-mail to: archives: = http://mail.webdna.us/list/talk@webdna.us Bug Reporting: = support@webdna.us
Donovan Brooke
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