[Betternestedset-talk] Sortable Sets

[Jeremy Nicoll]

    No thoughts at the moment, but if you run into any problems I'll see 
if I can help you.  FYI, I have not used the two components that you are 
using together - mostly I've just used better_nested_set.  Ordering 
things in a list is pretty easy and so I've always just done my own code 
because I've felt the other helpers just get in my way.


*Jeremy Nicoll*
www.gnexp.com <http://www.gnexp.com>
(801) 783-3831


John-Paul Bader wrote:
> After lots of reading I think the best way is to use simple draggables 
> and droppables. After the drop i'll move the dragged node to the 
> dropped one with move_to_child_of and after that i'll redraw the tree.
>
> Any thoughts on that ? 
>
> Kind regards, John
>
> On 19.03.2008, at 20:45, Jeremy Nicoll wrote:
>> Hello John-Paul,
>>
>>     I've done this in a recent project.  Basically the way I do it is 
>> check to see what order the a selected item in a list is in, and then 
>> move that item before/after a child node in the target parent based 
>> off this information.  It's a bit complicated, but it's doable. I 
>> monkey patched the module SymetrieCom::Acts::NestedSet to include the 
>> following method to help me with this scenario:
>>
>> ------------------------------------------------------------------------
>>         def move_to_parent_location(parent, location)
>>           parent = nil if parent == 0
>>           parent = parent === self.class ? parent : 
>> self.class.find(parent) if parent
>>           children = parent ? parent.children : self.class.roots
>>          
>>           if children.length > 0
>>             ord = location.to_i
>>             if ord > children.length
>>               self.move_to(children.last, :right)
>>             elsif children[ord] != self
>>               self.move_to(children[ord], :left)
>>             end
>>           elsif parent
>>             self.move_to(parent, :child)
>>           end
>>         end
>> ------------------------------------------------------------------------
>>
>>
>> <logo_sig.jpg>
>> *Jeremy Nicoll*
>> www.gnexp.com <http://www.gnexp.com>
>> (801) 783-3831
>>
>>
>> John-Paul Bader wrote:
>>> Hey there,
>>>
>>> I just subscribed so i hope this question isn't redundant.
>>>
>>> I'm trying to implement a sortable nested set.
>>>
>>> I've already got an application with better_nested_set in place. I  
>>> also got a nice nested <ul> rendering for my tree. No I'd be able to  
>>> drag an drop / sort elements across the set.
>>>
>>> I found this Wiki entry which says that it wouldn't be a good idea in  
>>> general to use sortable.create with :tree => true
>>>
>>> http://whynotwiki.com/Rails_/_Sortable_trees
>>>
>>> On the same page there is a link to the rubyonrails wiki stating that  
>>> there is a fix expecially for better_nested_set. http://dev.rubyonrails.org/ticket/7807
>>>
>>> My question would be what your experiences are. Is there a good way to  
>>> implement a sortable / draggable better_nested_set ? If not do you  
>>> have any suggestions, thoughs on this ?
>>>
>>> Thanks and kind regards,
>>>
>>> John (Berlin / Germany)
>>> _______________________________________________
>>> Betternestedset-talk mailing list
>>> Betternestedset-talk at rubyforge.org
>>> http://rubyforge.org/mailman/listinfo/betternestedset-talk
>>>
>>>   
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>
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