[ZCM] [ZC] 759/ 2 Reject "access to selection / multiple selection properties in DTML Methods"

[Collector: Zope Bugs, Features, and Patches ...]

Issue #759 Update (Reject) "access to selection / multiple selection properties in DTML Methods"
 Status Rejected, Zope/bug medium
To followup, visit:
  http://collector.zope.org/Zope/759

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= Reject - Entry #2 by ajung on Jan 10, 2003 12:12 pm

 Status: Pending => Rejected

dupe (#760)
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= Request - Entry #1 by abel on Jan 7, 2003 7:56 am

- add a lines property named 'ref_' to a folder and fill in some values.

- copy the contents of lib/python/OFS/dtml/properties.dtml into a DTML Method 'proptest' in this folder.

- create a subfolder in the folder

- add a selection or multiple selection property to the subfolder, with the lines property 'ref_' from the parent folder as the "choice values".

- call the method 'proptest' on the subfolder. Instead of showing the [multiple] selection, the output will be "no value for ref_".

While the regular properties tab of the ZMI works fine,  the property 'ref_' of the parent folder cannot be accessed from the DTML Method with the same source code.

Some more details:

- If something like '<dtml-var ref_>' is inserted near the start of the DTML Method proptest, the [multi] selection property will be shown correctly.

- If line 130 of the 'proptest':

>    <dtml-elif "_.has_key(select_variable)">
>    <div class="form-element">
>    <select name="<dtml-var id>:utf8:list" multiple
>      size="<dtml-var "_.min(7, _.len(_[select_variable]))">">
>      <dtml-in "_[select_variable]">
>         <option<dtml-if
>         "getProperty(id) and (_['sequence-item'] in getProperty(id))"
>         > SELECTED</dtml-if
>         >><dtml-var sequence-item html_quote></option>
>      </dtml-in>
>    </select>
>    </div>
>    <dtml-else>

is changed to

>    <dtml-elif "1 or _.has_key(select_variable)">
>    ...

Zope raises an "unauthorized" error. 

- As a workaround, it is possible to change lines 100 and 130 to

>    <dtml-elif "_.has_key(_.str(select_variable))">

select_variable is of type ustring, and for whichever reason access to things like _[select_variable] seems to be denied, while access to _[_.str(select_variable)]] works. More exactly: If there has been at least one access to _[_.str(select_variable)]], accessing _[select_variable] works too.



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