Help with scaffold and act as tree

[JackInDaBox]

Hello,
newbie here...I have acts_as_tree working with active scaffold. My problem is that it lists parents and children in the scaffold. For instance the database has:

id   | name     | parent_id |
1    |Animal    | null      |
2    |Cat       | 1         |
3    |Dog       | 1         |
4    |Siamese   | 2         |
5    |Collie    | 3         |
 

when it displays in active scaffold it lists it like:

 ---------
|Animal   |
|cat      |
|Dog      |
|Siamese  |
|collie   |
 ---------
 

What I want to do is see only where parent_id is nil but when i click the link 'Show Child' I want to bring up the children below the parent. such as:

 ------------------
|Animal            |
|   |cat        |  |
|   |Dog        |  |
 ------------------
 

I got the link for the child to work with:

#in controller
active_scaffold :category do |config|
    config.columns =[ :name ]
    config.nested.add_link("'Show Child'", [:children]) 
end
 

But i need help to only display the parent at the start.

Thanks

[modsaid]

Hi Jack

try adding this method to the controller

def conditions_for_collection
"parent_id is null " unless params[:parent_model]
end

it should do the trick

Hello,
newbie here...I have acts_as_tree working with active scaffold. My problem is that it lists parents and children in the scaffold. For instance the database has:

id   | name     | parent_id |
1    |Animal    | null      |
2    |Cat       | 1         |
3    |Dog       | 1         |
4    |Siamese   | 2         |
5    |Collie    | 3         |
 

when it displays in active scaffold it lists it like:

 ---------
|Animal   |
|cat      |
|Dog      |
|Siamese  |
|collie   |
 ---------
 

What I want to do is see only where parent_id is nil but when i click the link 'Show Child' I want to bring up the children below the parent. such as:

 ------------------
|Animal            |
|   |cat        |  |
|   |Dog        |  |
 ------------------
 

I got the link for the child to work with:

#in controller
active_scaffold :category do |config|
    config.columns =[ :name ]
    config.nested.add_link("'Show Child'", [:children]) 
end
 

But i need help to only display the parent at the start.

Thanks