Re: [WebDNA] feature suggestion
This WebDNA talk-list message is from 2011
It keeps the original formatting.
numero = 106784
interpreted = N
texte = Years back, someone taught me to do this to find if a variable is=20 undefined... if [myvar]=3D[raw][myvar][/raw] then.... or if [interpret][[myvar]][/interpret]=3D[[myvar]] then.... has always worked perfectly, and I really like the semantics of using=20 the [raw] tag A new feature added to the [if] tag would be great. maybe behave=20 similar to using boolean logic shorthand in javascript if() statements for example... if ( x ) { do something if x exists } or if ( !x ) { do something if x doesn't exist } in webDNA could be.. [if ([myVar])][then].... or [if (![myVar])][then].... On 6/22/11 2:01 PM, Brian B. Burton wrote: > [function name=3D?] > [If ("[url][interpret][[f]][/interpret][/url]"!"%5B[interpret][f][= /interpret]%5D")& ("[url][interpret][[f]][/interpret][/url]"!"")] > [Then][return]T[/return][/Then] > [Else][return]F[/return][/Else] > [/If] > [/function] > > > USAGE: > > [text]abc=3D123[/text] > [!]def is undefined[/!] > [text]ghi=3D[/text] > > >
> > abc =3D [abc]
[? f=3Dabc] > >
> > def =3D [def]
[? f=3Ddef] > >
> > ghi =3D [ghi]
[? f=3Dghi] > >
> > [showif [? f=3Dabc]=3DT]whatever you want to show or execute[/showif] > > [showif [? f=3Ddef]=3DT]nothing will show or execute[/showif] > > > Brian: I like your use of params_string, cuts out two more letters, rew= riting my code now :) > > On Jun 22, 2011, at 1:31 PM, Brian Fries wrote: > >> Here's my function for this=85. I return "1=3D0" for false or "1=3D1" = for true, which makes it simple to use in an IF or a SHOWIF=85 feel free = to change that if you prefer the T or F returned. >> >> Additionally it sets the global variable "definedValue" to the value o= f that variable/field/whatever it is, which is convenient when the target= field name comes from a variable, listwords, etc. (i.e. you don't need t= o do your own [interpret] after the fact) >> >> >> [function name=3DisDefined] >> [text]tValue=3D[interpret][[params_string]][/interpret][/text] >> [if "[url][tValue][/url]"=3D"%5B[params_string]%5D][then] >> [text scope=3Dglobal]definedValue=3D[/text] >> [return]1=3D0[/return] >> [/then][else] >> [text scope=3Dglobal]definedValue=3D[tValue][/text] >> [return]1=3D1[/return] >> [/else][/if] >> [/function] >> >> >> Example: >> >> [if [isDefined myVariable]][then] >> myVariable is set to [definedValue] >> [/then][else] >> myVariable is not defined >> [/else][/if] >> >> >> Brian Fries >> BrainScan Software >> >> >> >> On Jun 22, 2011, at 10:10 AM, Brian B. Burton wrote: >> >>> i'm writing it up as a function that returns T/F. I'll post the code = to the talk list as soon as I'm happy with it. >>> >>> >>> On Jun 22, 2011, at 1:02 PM, Govinda wrote: >>> >>>> :-) >>>> >>>> I would like that too.. but have it apply to any [var] and not only= a db [field]. >>>> >>>> >>>>> Need a new tag that is a showif if a field exists and is not empty >>>>> >>>>> i.e. >>>>> [hideif [url][content_title][/url]=3D%5Bcontent_title%5D][hideif [u= rl][content_title][/url]=3D]
[content_title]
[/hideif][/hi= deif] >>>>> >>>>> too much typing. >>>>> >>>>> suggestion: >>>>> [? [fieldname]] blah blah [/?] >>>>> (yeah, I mean literal question marks) >>>>> >>>>> >>>>> Thanks :) >>>>> >>>>> Brian B. > > --------------------------------------------------------- > 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:
Years back, someone taught me to do this to find if a variable is=20 undefined... if [myvar]=3D[raw][myvar][/raw] then.... or if [interpret][[myvar]][/interpret]=3D[[myvar]] then.... has always worked perfectly, and I really like the semantics of using=20 the [raw] tag A new feature added to the [if] tag would be great. maybe behave=20 similar to using boolean logic shorthand in javascript if() statements for example... if ( x ) { do something if x exists } or if ( !x ) { do something if x doesn't exist } in webDNA could be.. [if ([myVar])][then].... or [if (![myVar])][then].... On 6/22/11 2:01 PM, Brian B. Burton wrote: > [function name=3D?] > [If ("[url][interpret][[f]][/interpret][/url]"!"%5B[interpret][f][= /interpret]%5D")& ("[url][interpret][[f]][/interpret][/url]"!"")] > [Then][return]T[/return][/Then] > [Else][return]F[/return][/Else] > [/If] > [/function] > > > USAGE: > > [text]abc=3D123[/text] > [!]def is undefined[/!] > [text]ghi=3D[/text] > > >
> > abc =3D [abc]
[? f=3Dabc] > >
> > def =3D [def]
[? f=3Ddef] > >
> > ghi =3D [ghi]
[? f=3Dghi] > >
> > [showif [? f=3Dabc]=3DT]whatever you want to show or execute[/showif] > > [showif [? f=3Ddef]=3DT]nothing will show or execute[/showif] > > > Brian: I like your use of params_string, cuts out two more letters, rew= riting my code now :) > > On Jun 22, 2011, at 1:31 PM, Brian Fries wrote: > >> Here's my function for this=85. I return "1=3D0" for false or "1=3D1" = for true, which makes it simple to use in an IF or a SHOWIF=85 feel free = to change that if you prefer the T or F returned. >> >> Additionally it sets the global variable "definedValue" to the value o= f that variable/field/whatever it is, which is convenient when the target= field name comes from a variable, listwords, etc. (i.e. you don't need t= o do your own [interpret] after the fact) >> >> >> [function name=3DisDefined] >> [text]tValue=3D[interpret][[params_string]][/interpret][/text] >> [if "[url][tValue][/url]"=3D"%5B[params_string]%5D][then] >> [text scope=3Dglobal]definedValue=3D[/text] >> [return]1=3D0[/return] >> [/then][else] >> [text scope=3Dglobal]definedValue=3D[tValue][/text] >> [return]1=3D1[/return] >> [/else][/if] >> [/function] >> >> >> Example: >> >> [if [isDefined myVariable]][then] >> myVariable is set to [definedValue] >> [/then][else] >> myVariable is not defined >> [/else][/if] >> >> >> Brian Fries >> BrainScan Software >> >> >> >> On Jun 22, 2011, at 10:10 AM, Brian B. Burton wrote: >> >>> i'm writing it up as a function that returns T/F. I'll post the code = to the Talk List as soon as I'm happy with it. >>> >>> >>> On Jun 22, 2011, at 1:02 PM, Govinda wrote: >>> >>>> :-) >>>> >>>> I would like that too.. but have it apply to any [var] and not only= a db [field]. >>>> >>>> >>>>> Need a new tag that is a showif if a field exists and is not empty >>>>> >>>>> i.e. >>>>> [hideif [url][content_title][/url]=3D%5Bcontent_title%5D][hideif [u= rl][content_title][/url]=3D]
[content_title]
[/hideif][/hi= deif] >>>>> >>>>> too much typing. >>>>> >>>>> suggestion: >>>>> [? [fieldname]] blah blah [/?] >>>>> (yeah, I mean literal question marks) >>>>> >>>>> >>>>> Thanks :) >>>>> >>>>> Brian B. > > --------------------------------------------------------- > 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
Aaron Michael Kaczmarek
DOWNLOAD WEBDNA NOW!
Top Articles:
Talk List
The WebDNA community talk-list is the best place to get some help: several hundred extremely proficient programmers with an excellent knowledge of WebDNA and an excellent spirit will deliver all the tips and tricks you can imagine...
Related Readings:
Rumpus/Typhoon modules included in Typhoon ... (1997)
Pre-parse hell (2008)
Deleting with contexts (2001)
referrer variable (1997)
PSC recommends what date format yr 2000??? (1997)
Country & Ship-to address & other fields ? (1997)
gateway application timeouts (1998)
Hyperboard/bulletin board available (1998)
Admin Section (2002)
[WebDNA] v7 Stress Test and Strange Behaviour (2012)
Sorting by highest number of matches unique to a field (2003)
Running 2 two WebCatalog.acgi's (1996)
WebCat2.0 [format thousands .0f] no go (1997)
Almost a there but..bye bye NetCloak (1997)
[LOOKUP] (1997)
Mac: LModelDirector bug fix (1997)
Trouble with formula.db (1997)
form data submission gets truncated (1997)
WebTV, IPAddress, Cookies, IDEAS?? (1998)
URL for Discussion Archive (1997)