X-Git-Url: https://harishankar.org/repos/?p=biaweb_qt.git;a=blobdiff_plain;f=templates_dialog.py;h=db61404f0ef15560705d79afa918ab651eaa6958;hp=64cc70ca3158fa6b1f37dc49ee929e1f6396b7cb;hb=ba3069991aeda91317057aa2c115f8c2151d0a98;hpb=54389d5adbbb1830a7e85545b2bdde816713a272

diff --git a/templates_dialog.py b/templates_dialog.py
index 64cc70c..db61404 100644
--- a/templates_dialog.py
+++ b/templates_dialog.py
@@ -16,18 +16,26 @@ class TemplatesDialog (PyQt4.QtGui.QDialog, ui_templates_dialog.Ui_TemplatesDial
 
 		# populate the templates
 		tpls = biaweb_db.get_templates (self.current_db)
-		for tpl_name, tpl_content in tpls:
-			self.templates.addItem (str (tpl_name))
+		# if templates populated
+		if tpls:
+			for tpl_name, tpl_content in tpls:
+				self.templates.addItem (str (tpl_name))
+		else:
+			PyQt4.QtGui.QMessageBox.critical (self, "Error", "SQLite 3 error in retrieving templates")
 
 	def onEdit (self):
 		# get the currently selected list item
-		tpl_name = str (self.templates.currentItem ().data (0).toString ())
+		sel_item = self.templates.currentItem ()
+		# if no item is selected return
+		if sel_item is None:
+			return
+		tpl_name = str (sel_item.data (0).toString ())
 
 		# get the template content from the database
 		tpl_str = biaweb_db.get_template_text (self.current_db, tpl_name)
 
 		# if template string cannot be obtained for some reason
-		if tpl_str == False:
+		if tpl_str is False:
 			PyQt4.QtGui.QMessageBox.critical (self, "Error", "SQLite 3 error in retrieving template")
 		else:
 			# open edit dialog with title "template name" and text as the template string
@@ -39,6 +47,6 @@ class TemplatesDialog (PyQt4.QtGui.QDialog, ui_templates_dialog.Ui_TemplatesDial
 				# update the template with the new template string
 				ret = biaweb_db.update_template (self.current_db, tpl_name, upd_tpl_str)
 				# if update failed
-				if ret == False:
+				if ret is False:
 					PyQt4.QtGui.QMessageBox.critical (self, "Error", "SQLite 3 error in updating template")