Re: [Zope] range with variables

2000-06-28 Thread R. David Murray

On Tue, 27 Jun 2000, Armin Wappenschmidt wrote:
 dtml-let start=Variable_from_Formular # -- that's the problem!!
 dtml-let stop="100"
 dtml-let period="5"
dtml-in "_.range(start,stop,period)"
   dtml-comment do something /dtml-comment
/dtml-in
 /dtml-let
 /dtml-let
 /dtml-let
 
 
 How can I set the variable "start" from a user given input?

If the user input is the value of a field in a form that was submitted,
just refer to the name of the form field:

dtml-in "_.range(fieldname,stop,period)"

You can use the special form name syntax to have Zope cast the
field value into the appropriate type:  input name="fieldname:int".
There's a howto on the various possabilities for what goes after
the ':'.

--RDM


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[Zope] range with variables

2000-06-27 Thread Armin Wappenschmidt

Hi all,

I've a problem using the following dtml construct:

dtml-let start=Variable_from_Formular # -- that's the problem!!
dtml-let stop="100"
dtml-let period="5"
   dtml-in "_.range(start,stop,period)"
  dtml-comment do something /dtml-comment
   /dtml-in
/dtml-let
/dtml-let
/dtml-let


How can I set the variable "start" from a user given input?

Thanks!
armin

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Armin Wappenschmidt - Consultant Engineer

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[Zope] R: [Zope] range with variables

2000-06-27 Thread Marcel Preda


- Original Message - 
From: Armin Wappenschmidt [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, June 27, 2000 10:50 AM
Subject: [Zope] range with variables


 Hi all,
 
 I've a problem using the following dtml construct:
 
 dtml-let start=Variable_from_Formular # -- that's the problem!!
 dtml-let stop="100"
 dtml-let period="5"
dtml-in "_.range(start,stop,period)"
   dtml-comment do something /dtml-comment
/dtml-in
 /dtml-let
 /dtml-let
 /dtml-let
 
 
 How can I set the variable "start" from a user given input?
 


You can call
http://www.domain.com/index?startindex=101
or you can do this bay a usual FORM
FORM
INPUT TYPE="TEXT" NAME="startindex"
...
input TYPE=SUBMIT
/FORM

The problem is that in both cases the `startindex' is a string, 
you have tu convert it to int.

dtml-call "REQUEST.set('start_int',_.string.atoi(startindex)"

ATENTION: If 'startindex' is not a valid number the `atoi' method will
rise an exception like:

Error Type: ValueError
Eror value: invalid literal for atoi():

So is better to check first, something like:

dtml-try
dtml-call "REQUEST.set('startindex_int',_.string.atoi(startindex)"
dtml-except
 Error message - INVALID NUMBER
/dtml-try



Other way is to force `startindex' to be a int like:
FORM
INPUT TYPE="TEXT" NAME="startindex:int"
...
input TYPE=SUBMIT
/FORM

But you could have problems, an exception like above could occur
(if someone will input an invalid number) and you can not do something.


That's the story.


PM 



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