String Representation of an Object

Ignition
1

Hit a hiccup with trying to print out an object. Not sure what is going on. The debug below is from the script console.

from shared.scheduler.model import ScheduleEntry

new = ScheduleEntry(1,2,3,4,5,6,7,8)
print str(new)

class test:
	def __init__(self):
		self.id = 1
	def __str__(self):
		return "string"
		
t = test()

print t

This is the class for ScheduleEntry:

class ScheduleEntry:
	def __init__(self, id, priority, loadDate, startDate, endDate, recipe, minDosingTime, status):
		self.id = id
		self.priority = priority
		self.loadDate = loadDate
		self.startDate = startDate
		self.endDate = endDate
		self.recipe = recipe
		self.minDosingTime = minDosingTime
		self.status = status
		self.segmentsByDay = {}
		self.newEntry = False	
		
	def __str__(self):
		return "string"

When I print out “new” I just get the representation of the object and not the string as expected but when I print out “t”, I get the string as expected

Console Output

>>> 
<model.ScheduleEntry instance at 0xd>
string
>>>
2

You don't say what version of Ignition, but I'm pretty sure your class should be defined with parent object. First line like so:

class ScheduleEntry(object):

See "New Style Classes" in the python documentation:

https://docs.python.org/2/reference/datamodel.html#new-style-and-classic-classes

Also, consider not using import. There are corner cases where old code can persist. Use the full path to ScheduleEntry when you construct your instance.

3

We are using Ignition 7.9.2 which uses Jython 2.5.3. Adding the the parent object didn’t make a difference but by not using the import and using the full path to construct the instance, that fixed the issue.

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