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[user expression] Fix crash and add a log message when the expression is not valid, fixes #12852

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This commit is contained in:
Salvatore Larosa 2015-05-30 17:29:45 +02:00
parent 51bd0b2bc5
commit f7401c9b27
1 changed files with 12 additions and 3 deletions
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15
python/user.py
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@ -1,8 +1,10 @@
import os import os
import sys import sys
import glob import glob
import traceback
from qgis.core import QgsApplication from PyQt4.QtCore import QCoreApplication
from qgis.core import QgsApplication, QgsMessageLog
def load_user_expressions(path): def load_user_expressions(path):
""" """
@ -14,9 +16,16 @@ def load_user_expressions(path):
for name in names: for name in names:
if name == "__init__": if name == "__init__":
continue continue
# As user expression functions should be registed with qgsfunction # As user expression functions should be registered with qgsfunction
# just importing the file is enough to get it to load the functions into QGIS # just importing the file is enough to get it to load the functions into QGIS
__import__("expressions.{0}".format(name), locals(), globals()) try:
__import__("expressions.{0}".format(name), locals(), globals())
except:
error = traceback.format_exc()
msgtitle = QCoreApplication.translate("UserExpressions", "User expressions")
msg = QCoreApplication.translate("UserExpressions",
"The user expression {0} is not valid".format(name))
QgsMessageLog.logMessage(msg +"\n"+ error, msgtitle, QgsMessageLog.WARNING)
userpythonhome = os.path.join(QgsApplication.qgisSettingsDirPath(), "python") userpythonhome = os.path.join(QgsApplication.qgisSettingsDirPath(), "python")