Re: Finding the value of a key in a nested structure

2010-06-15 Thread Tom King 

Cheers Ray - simple is good!! :)

On 14 June 2010 17:02, Raymond Camden rcam...@gmail.com wrote:


 Evaluate is slow - comparatively. It isn't horrible though. The main
 reason I will complain about evaluate is when it isn't strictly
 necessary. Technically it isn't in your case. You could break up the
 string into parts and check the existence of each - but I think your
 code is fine (and a hell of a lot simpler).

 On Mon, Jun 14, 2010 at 9:44 AM, Tom King mailingli...@oxalto.co.uk
 wrote:
 
  nevermind - found the solution!
 
  ended up with:
 
 cffunction name=checkPermission
 cfargument name=path
 cfif IsDefined('session.currentUser.permissions.' 
  arguments.path)
 cfif evaluate('session.currentUser.permissions.' 
  arguments.path)
  cfreturn true
  cfelse
  cfreturn false
  /cfif
 cfelse
 cfreturn false
 /cfif
 /cffu

 

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Finding the value of a key in a nested structure

2010-06-14 Thread Tom King 

Ok, my brain is hurting - I know this should be possible, but I can't quite
get the syntax.

I need to pass a string (a path to a structure which contains a boolean in
the session scope) into a function, which then checks the value:

i.e

cfif checkPermission(email.send.all)
Show a form or page
/cfif

cffunction name=checkPermission
cfargument name=path
cfif session.currentUser.permissions['#arguments.path#']
cfreturn true
cfelse
cfreturn false
/cfif
/cffunction

So in this instance, CF is looking for
session.currentUser.permissions['email.send.all'] - i.e a structure key name
of 'email.send.all' , rather than
session.currentUser.permissions.email.send.all

Is there an elegant solution to this problem?

Ta
T


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RE: Finding the value of a key in a nested structure

2010-06-14 Thread Andy Matthews 

When working with structures nested that deeply you might consider IsDefined
instead.

cfif IsDefined('session.currentUser.permissions.'  arguments.path)

It's not a best practice necessarily, but it would prevent a whole bunch of
StructKeyExists calls.


andy
 

-Original Message-
From: Tom King [mailto:mailingli...@oxalto.co.uk] 
Sent: Monday, June 14, 2010 9:20 AM
To: cf-talk
Subject: Finding the value of a key in a nested structure


Ok, my brain is hurting - I know this should be possible, but I can't quite
get the syntax.

I need to pass a string (a path to a structure which contains a boolean in
the session scope) into a function, which then checks the value:

i.e

cfif checkPermission(email.send.all)
Show a form or page
/cfif

cffunction name=checkPermission
cfargument name=path
cfif session.currentUser.permissions['#arguments.path#']
cfreturn true
cfelse
cfreturn false
/cfif
/cffunction

So in this instance, CF is looking for
session.currentUser.permissions['email.send.all'] - i.e a structure key name
of 'email.send.all' , rather than
session.currentUser.permissions.email.send.all

Is there an elegant solution to this problem?

Ta
T




~|
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Re: Finding the value of a key in a nested structure

2010-06-14 Thread Tom King 

Cheers Andy -
That's fine if I want to check the struct exists, but I'm trying to directly
test against the value of that path (which in this case is a boolean)...?
T


On 14 June 2010 15:25, Andy Matthews li...@commadelimited.com wrote:


 When working with structures nested that deeply you might consider
 IsDefined
 instead.

 cfif IsDefined('session.currentUser.permissions.'  arguments.path)

 It's not a best practice necessarily, but it would prevent a whole bunch of
 StructKeyExists calls.


 andy


 -Original Message-
 From: Tom King [mailto:mailingli...@oxalto.co.uk]
 Sent: Monday, June 14, 2010 9:20 AM
 To: cf-talk
 Subject: Finding the value of a key in a nested structure


 Ok, my brain is hurting - I know this should be possible, but I can't quite
 get the syntax.

 I need to pass a string (a path to a structure which contains a boolean in
 the session scope) into a function, which then checks the value:

 i.e

 cfif checkPermission(email.send.all)
 Show a form or page
 /cfif

 cffunction name=checkPermission
 cfargument name=path
 cfif session.currentUser.permissions['#arguments.path#']
 cfreturn true
 cfelse
 cfreturn false
 /cfif
 /cffunction

 So in this instance, CF is looking for
 session.currentUser.permissions['email.send.all'] - i.e a structure key
 name
 of 'email.send.all' , rather than
 session.currentUser.permissions.email.send.all

 Is there an elegant solution to this problem?

 Ta
 T




 

~|
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http://www.amazon.com/Adobe-Coldfusion-Anthology-Michael-Dinowitz/dp/1430272155/?tag=houseoffusion
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Re: Finding the value of a key in a nested structure

2010-06-14 Thread Tom King 

nevermind - found the solution!

ended up with:

cffunction name=checkPermission
cfargument name=path
cfif IsDefined('session.currentUser.permissions.' 
arguments.path)
cfif evaluate('session.currentUser.permissions.' 
arguments.path)
 cfreturn true
 cfelse
 cfreturn false
 /cfif
cfelse
cfreturn false
/cfif
/cffunction

(Never used evaluate() before, heard it was bad..?)

T


On 14 June 2010 15:29, Tom King mailingli...@oxalto.co.uk wrote:

 Cheers Andy -
 That's fine if I want to check the struct exists, but I'm trying to
 directly test against the value of that path (which in this case is a
 boolean)...?
 T



 On 14 June 2010 15:25, Andy Matthews li...@commadelimited.com wrote:


 When working with structures nested that deeply you might consider
 IsDefined
 instead.

 cfif IsDefined('session.currentUser.permissions.'  arguments.path)

 It's not a best practice necessarily, but it would prevent a whole bunch
 of
 StructKeyExists calls.


 andy


 -Original Message-
 From: Tom King [mailto:mailingli...@oxalto.co.uk]
 Sent: Monday, June 14, 2010 9:20 AM
 To: cf-talk
 Subject: Finding the value of a key in a nested structure


 Ok, my brain is hurting - I know this should be possible, but I can't
 quite
 get the syntax.

 I need to pass a string (a path to a structure which contains a boolean in
 the session scope) into a function, which then checks the value:

 i.e

 cfif checkPermission(email.send.all)
 Show a form or page
 /cfif

 cffunction name=checkPermission
 cfargument name=path
 cfif session.currentUser.permissions['#arguments.path#']
 cfreturn true
 cfelse
 cfreturn false
 /cfif
 /cffunction

 So in this instance, CF is looking for
 session.currentUser.permissions['email.send.all'] - i.e a structure key
 name
 of 'email.send.all' , rather than
 session.currentUser.permissions.email.send.all

 Is there an elegant solution to this problem?

 Ta
 T




 

~|
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http://www.amazon.com/Adobe-Coldfusion-Anthology-Michael-Dinowitz/dp/1430272155/?tag=houseoffusion
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Re: Finding the value of a key in a nested structure

2010-06-14 Thread Raymond Camden 

Evaluate is slow - comparatively. It isn't horrible though. The main
reason I will complain about evaluate is when it isn't strictly
necessary. Technically it isn't in your case. You could break up the
string into parts and check the existence of each - but I think your
code is fine (and a hell of a lot simpler).

On Mon, Jun 14, 2010 at 9:44 AM, Tom King mailingli...@oxalto.co.uk wrote:

 nevermind - found the solution!

 ended up with:

    cffunction name=checkPermission
        cfargument name=path
            cfif IsDefined('session.currentUser.permissions.' 
 arguments.path)
                cfif evaluate('session.currentUser.permissions.' 
 arguments.path)
                 cfreturn true
                 cfelse
                     cfreturn false
                 /cfif
            cfelse
                cfreturn false
            /cfif
    /cffu

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