[Zope] Programmatically deleting objects

Thu Mar 25 04:53:12 EST 2004

Horak, Karl wrote:

> I've given up on using the ZMI's system of checkboxes named with object ids
> and calling the manage_delObjects:method from a submit button.  Instead I'm
> now simply generating a URL that passes a querystring with the path to the
> item and the item name:  
> 
> <A HREF="goDelete?item=<dtml-var id>&delPath=<dtml-var
> expr="aq_parent.aq_parent.id">.<dtml-var expr="aq_parent.id">">

That is truly horrible :-(

> Thus, I have two variables, delPath = 'ORDlibrary.BC' (or whichever
> subfolder) is the container of the item to be deleted, item =
> 'filename.ext', which is the object's id.  
> 
> The goDelete method is some variation on:
> 
> <dtml-call expr="REQUEST.delPath.manage_delObjects([REQUEST.item])">
> (This generates an AttributeError stating 'str' object has no attribute
> 'manage_delObjects')
> 
> Or:
> 
> <dtml-call
> expr="_.getitem(REQUEST.delPath).manage_delObjects([REQUEST.item])">
> (This generates a KeyError with an Error Value of 'ORDlibrary.BC')
> 
> The odd thing is that using explicit strings as you pointed out in your
> suggestion works fine:
> <dtml-call expr="ORDlibrary.BC.manage_delObjects([REQUEST.item])">

Urm, you need to learn some python...

If you really insist on persuing this insane course, your code would need to be:

<dtml-call 
expr="restrictedTraverse(REQUEST.delPath.replace('.','/')).manage_delObjects([REQUEST.item])">

God, I feel soiled just typing that :-(

> Why are literals working but not variables with string values?  

Because _.getitem is not restrictedTraverse, it just behaves like a simple 
python mapping. And even if it was restrictedTraverse, you have .'s where you 
need /'s.

> This repeatedly asks for user ID and password 

Hit cancel. Check out the error message. Maybe try VerboseSecurity.

> value set to Manager).  This is the equivalent of the "spinning Zope" in my
> initial message.

Zope is NOT spinning here!

> That said, I find that calls to SquishDot management functions and Zope
> manage_editProperties work on my testbed but not when they are moved onto
> the firewalled system.

Eh?

Right, here's a solution in ZPT.

Put a ZPT in your ORDLibrary.BC folder called index_html:

<html>
<body>
<form action="manage_delObjects">
<table>
<tr tal:repeat="id here/objectIds">
<td>
<input type="checkbox" name="ids:list"
        tal:attributes="value id">
</td>
<td tal:contents="id"/>
</tr>
</table>
<input type="submit">
</body>
</html>

Any problems?

I suggest you really read the online Zope book :-S

Chris

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