Merci beaucoup!
it works fine now.
>Now, and while this is none of my problems, I'd seriously question the
decision of building html that way. This would be better done using
templates IMVHO.
-> I'm using this function in a custom tag to build a menu
On 12 nov, 10:59, bruno desthuilliers <[EMAIL PROTECTED]>
wrote:
> On 12 nov, 09:22, gontran <[EMAIL PROTECTED]> wrote:
>
>
>
> > Hello,
>
> > I've got a problem with a recursive function:
> > in my model, I have a class named myClass: each object in my class has
> > an id, a parentId, and a name.
> > I want to make a list of all my objects that looks like this:
> > <ul>
> > <li>object1</li>
> > <li>object2</li>
> > <li>object3
> > <ul>
> > <li>object4</li>
> > <li>object6</li>
> > </ul></li>
> > <li>object5</li>
> > ...
> > </ul>
>
> > So I wrote a function displayListObject():
> > def displayListObject(parentId, displayString):
> > displayString += '<ul>'
> > elements = myClass.objects.filter(parentId=parentId)
> > for element in elements:
> > if myClass.objects.filter(parentId=page.id):
> > displayString += '<li>' + page.id + '</li>'
> > displayListObject(page.id, displayString)
>
> (snip)
>
> > Any idea to fix this?
>
> Yes : don't pass displayString as an argument, just use the return
> value of the function, ie:
>
> def displayListObject(parentId):
> displayString = '<ul>'
> elements = myClass.objects.filter(parentId=parentId)
> for element in elements:
> if myClass.objects.filter(parentId=page.id):
> displayString += '<li>' + page.id + '</li>'
> displayString += displayListObject(page.id, displayString)
> else:
> displayString += '<li>' + page.id + '</li>'
> displayString += '</ul>'
> return displayString
>
> The root of your problem is that python strings are immutable. So the
> augmented assignment ('+=') rebind the name displayString to a new
> string object. And since parameters names are local to the function,
> this rebinding (hopefully) only affect the local namespace.
>
> Now, and while this is none of my problems, I'd seriously question the
> decision of building html that way. This would be better done using
> templates IMVHO.
>
> HTH
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