Tree Component Selected Path Value

Ignition
1

When using a perspective tree component, the selected value comes in as '0/0/0'. Rather than the index path, is there a way to get the string path instead? For example '0/0/0' is the equivalent of 'Item 1/Child1/Grandchild1'. I want to do this because i am trying to build tag paths.
image
image

2

Is the string value not in the value object within the selectionData array? It should be right below the itemPath, just below where your screenshot is cut off.

Per the Ignition Docs for the selectionData:

Array of objects containing the data and index path for all currently selected nodes.

  • itemPath: Index path. Value is numeric.
  • value: The value of the 'data' property for the selected node. Value is string.

This is what it looks like in my designer:
image

The value object holds the actual string representation of the node.

3

OP wants a string in the form,
Item 1/Child 1/Grandchild 2
for selection.0 : 0/0/1.
i.e., Join all the values down to the selected node with a '/'.

I suspect it will need a script transform and some recursion.

4

It does not look like it is the selection path, it is the value of the selected item

image
image910Ɨ662 36.7 KB

5

Try this:

Items path
Items path726Ɨ695 59.2 KB

Script 
def transform(self, value, quality, timestamp):
	indexes = value.selection.split('/')
	itemPath = []
	currentItems = value.items
	for i in indexes:
		i = int(i)
		itemPath.append(currentItems[i].label)
		currentItems = currentItems[i].items
	return '/'.join(itemPath)

One of the Python guys should be able to reduce this to a couple of lines but this should give you something to work with in the meantime.

2 Likes
6

That worked perfectly, thank you!