I am working on my first Python Add-In and am having a couple issues. What I am trying to do is create a tool that will allow the user to click somewhere on the map and take the map coordinates to create a circle with a predefined radius, fill out some default values, insert it into a SDE feature class, then select the feature to display it's attributes in the attribute editor. This all works pretty well.The problem is related to editing. I would like for the tool to be disabled if the feature class is not editable or if the layer is not in the current map document. I am also struggling with the edit state. If I start editing and run my tool I get this message: The requested operation is invalid on a closed state. If I make at least one edit, I can run the tool just fine.
def onMouseDownMap(self, x, y, button, shift):
mxd = arcpy.mapping.MapDocument('current')
df = arcpy.mapping.ListDataFrames(mxd, 'Layers')[0]
fc = ''
for lyr in arcpy.mapping.ListLayers(mxd,'*', df):
if lyr.supports("dataSource"):
lyrSource = lyr.dataSource.split("\\")
if lyrSource[3] == 'zodiac.GIS.IPCoROW':
fc = lyr.dataSource
rowLayer = lyr
break
# set the radius of the circle
radius = 20
# set the number of sides/vertices the circle will have
side_count = 40
# create the degrees for the circle
degrees = 360 / side_count
# create a list to hold each vertice point for the circle
cir_poly = []
# loop through the number of sides
for i in range(side_count):
# set the angle for the current vertice
angle = (degrees * i) * (math.pi / 180)
# do some math to set the xFactor and the yFactor
xFactor = math.sin(angle)
yFactor = math.cos(angle)
# set the x and y vertices
xVal = radius * xFactor + x
yVal = radius * yFactor + y
# create a arcpy point
pnt = arcpy.Point(xVal,yVal)
# add the point to the list
cir_poly.append(pnt)
# create an array and add the list to it
array = arcpy.Array([cir_poly])
# create a polygon from the array of points
polygon = arcpy.Polygon(array)
# set the path to the IPCoROW layer
#fc = r"Database Connections\Connection to landbaseProd.sde\zodiac.GIS.Land\zodiac.GIS.IPCoROW"
if len(fc) > 0:
try:
# create the insert cursor to be used to add our new circle
print 'Create Insert Cursor'
with arcpy.da.InsertCursor(fc, ["SHAPE@","OwnerType","ConvType","SOURCE","Comments"]) as c:
# insert the circle with attributes into the IPCoROW layer
print 'Insert Row'
i = c.insertRow([polygon, 'ROW','Easement','DIGITIZED','INSUFFICIENT DATA'])
print 'OID =',i
# refresh the active view to show the new feature
arcpy.RefreshActiveView()
print 'Select Features'
arcpy.SelectLayerByAttribute_management (rowLayer, "NEW_SELECTION", "OBJECTID = " + str(i))
except Exception, e:
# if there was an error, print it here
# common errors include:
# attempting to edit outside an edit session
# attempting to edit prior to making any other edits
print 'Error -', e
finally:
pass
else:
print 'Could not find zodiac.GIS.IPCoROW'
