How to move an item from a tree. - It has not to do with parent_id -

Hi.

taking

  element 1

  element 2

  element 3

  element 4

  element 5

When change of place the element 1 under element 5 I get the following.

  element 2

  element 3

  element 4

  element 5

  element 1

'element' => '1 ',

'parent' =>'',

'previous' => '5'

this means that the element 1 is preceded by the element 5.

- Clarify that if parent was defined to mean that the element 1 is a child of 5 element, but that's not the idea -

when the intention is to have an element is the child of another element. The behavior tree is responsible for updating the lft rght fields involved in defining parent_id

But if the intention is to have an element is preceded by another, such handling this scenario?

- With these data there are three scenarios:

'element' => '1 ',

'parent' =>'',

'previous' =>''

1) when the element 1 is a child of x element.

  element 2

  element 3 - x

  element 1

  element 4

  element 5

2) when the element is preceded by an element x

 

  element 2

  element 3

  element 4 - x

  element 1

  element 5

3) when the element 1 is a child of  x element  and is preceded by y element

  element 2 - x

  element 3 - y

  element 1

  element 4

  element 5

As noticed the first scenario is solved only with parent_id set, the behavior tree is responsible for updating the lft rght fields involved

The second and third stage are related and it is where my question.

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