Ignition Version 8.1.17
I have a Tree component in perspective that I'm using to allow users to modify what items are available in dropdowns in another interface. Each item in the tree has an 'ItemData' dictionary in the 'data' key of the item.
I'm able to add to the tree item's 'items' key utilizing .append(), however I am unable to modify the dictionary that is present in the item's 'data' key using .update().
Searching the forums yielded this post, but it appears they were trying to modify an object wrapper in a different way.
Message handler to append item to tree at selected level:
logger = system.util.getLogger('OEE Management - Gen Management')
itemType = payload['Type']
itemIsSecondaryType = payload['Secondary']
logger.info(str(itemType))
treeStructure = self.view.custom.Data.ModifiedTree
selection = self.getChild("FlexContainer_Body").getChild("FlexContainer_Selection").getChild("Tree").props.selection[0]
self.addToTree(treeStructure, selection, itemType, itemIsSecondaryType)
calls this custom method:
tmpDict = treeStructureData
iconPath = ''
path = path.split("/")
# If we are adding from selecting a list node we need to be in the items of the list node
if itemType in ['Downtime List', 'Part List'] or itemIsSecondaryType:
pathing = path
else:
pathing = path[:-1]
# If we are adding from selecting a list node, adjust the node type
if itemType == 'Part List':
itemTypeToAdd = 'Part'
elif itemType == 'Downtime List':
itemTypeToAdd = 'Downtime'
else:
itemTypeToAdd = itemType
itemData = {'Type':itemTypeToAdd}
items = []
# Set icons, additional data for specific items
if itemTypeToAdd == 'Campus':
iconPath = 'material/apartment'
itemData.update({'ExpectedItemTypes':['Cell']})
elif itemTypeToAdd == 'Cell':
itemData.update({'ExpectedItemTypes':['Machine']})
elif itemTypeToAdd == 'Machine':
itemData.update({'ExpectedItemTypes': ['Part List', 'Downtime List']})
items = [{'label':'Parts',
'data':{'Type': 'Part List', 'ExpectedItemTypes':['Part']},
'icon':{'path':'material/memory', 'color': '#869DB1', 'style':{}},
'items':[]},
{'label': 'Downtime',
'data':{'Type': 'Downtime List', 'ExpectedItemTypes':['Downtime']},
'icon':{'path':'material/new_releases', 'color': '#869DB1', 'style':{}},
'items':[]}]
elif itemTypeToAdd == 'Part':
iconPath = 'material/memory'
itemData.update({'ExpectedItemTypes':['Scrap']})
elif itemTypeToAdd == 'Scrap':
iconPath = 'material/assignment_late'
itemData.update({'ExpectedItemTypes':None})
elif itemTypeToAdd == 'Downtime':
iconPath = 'material/assignment_late'
itemData.update({'ExpectedItemTypes':None})
iconData = {'path':iconPath, 'color': '#869DB1', 'style':{}}
for i in pathing:
tmpDict['expanded'] = True
tmpDict = tmpDict['items'][int(i)]
tmpDict['expanded'] = True
tmpDict['items'].append({'label': 'New {0}'.format(str(itemTypeToAdd)),
'expanded': False,
'data': itemData,
'icon':iconData,
'items':items})
The above code works, the new tree item is added at the expected level with no issues.
The message handler to update selected tree item:
logger = system.util.getLogger("OEE Management - Update Tree")
itemType = payload["Type"]
path = payload["Path"]
field = payload["Field"]
value = payload["Value"]
treeStructureData = self.view.custom.Data.ModifiedTree
self.updateTree(treeStructureData, path, field, value)
Which calls this custom method:
logger = system.util.getLogger("OEE Management - Update Tree")
path = path.split("/")
tmpDict = treeStructureData
for i in path:
tmpDict["expanded"] = True
tmpDict = tmpDict["items"][int(i)]
#tmpDict["expanded"] = True
logger.info(str(tmpDict["data"]["ItemData"]))
logger.info(str({field:value}))
dict(tmpDict["data"]["ItemData"]).update({field:value})
logger.info(str(tmpDict["data"]["ItemData"]))
logger output before attempting to modify:
<ObjectWrapper>: {u'ScrapCode': u'Other', u'ScrapDesc': u'General Scrap', u'ScrapShortDesc': u'Not implemented'}
Logger output showing the dictionary made from the payload for the handler:
{u'ScrapDesc': u'General Scr'}
Logger output after the .update() call:
<ObjectWrapper>: {u'ScrapCode': u'Other', u'ScrapDesc': u'General Scrap', u'ScrapShortDesc': u'Not implemented'}
Something does appear to happen on the first call of the message handler as the tree flashes, collapses, then reopens to the selected item. After the first call though, nothing else happens to the tree. I can see the log on the gateway updating with the information from each call.
I have a markdown component on the side that shows the 'data' key of the selected tree item so I can see if data is being updated. The data shown in this component does not change for the selected item, even after the handler is called.
The tree's items property is bound to a custom property on the view. This custom property is what I'm modifying with the custom methods on the root container.