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pgVersion.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
Plugin for the Postgres Versioning System
-----------------------------------------------------------------------------------------------------------------
begin : 2010-07-31
copyright : (C) 2010 by Dr. Horst Duester
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
"""
import sys
# Import the PyQt and QGIS libraries
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import QWebView
from qgis.core import *
from qgis.gui import *
from dbtools.dbTools import *
from forms.Ui_CommitMessage import CommitMessageDialog
from forms.Ui_diff import DiffDlg
from pgVersionConflictWindow import ConflictWindow
# Initialize Qt resources from file resources.py
import resources_rc, traceback, string
# Import the code for the dialog
from forms.Ui_pgLoadVersion import PgVersionLoadDialog
from forms.Ui_help import HelpDialog
from forms.Ui_LogView import LogView
from pgVersionTools import PgVersionTools
from about.doAbout import DlgAbout
import apicompat, tempfile, os
class PgVersion(QObject):
def __init__(self, iface):
QObject.__init__(self)
# Save reference to the QGIS interface
self.iface = iface
self.w = None
self.vsCheck = None
self.layer_list = []
self.tools = PgVersionTools(self)
#Initialise thetranslation environment
self.plugin_path = QDir.cleanPath( os.path.abspath(os.path.dirname(__file__)) )
myLocaleName = QLocale.system().name()
myLocale = myLocaleName[0:2]
if QFileInfo(self.plugin_path).exists():
localePath = self.plugin_path+"/i18n/pgVersion_"+myLocale+".qm"
if QFileInfo(localePath).exists():
self.translator = QTranslator()
self.translator.load(localePath)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# QgsMapLayerRegistry.instance().layerWasAdded.connect(self.add_layer)
# QgsMapLayerRegistry.instance().layerWillBeRemoved.connect(self.remove_layer)
def initGui(self):
self.helpDialog = HelpDialog()
self.LogViewDialog = LogView(self)
self.toolBar = self.iface.addToolBar("PG Version")
self.toolBar.setObjectName("PG Version")
self.actionInit = QAction(QIcon(":/plugins/pgversion/icons/pgversion-init.png"), self.tr("Prepare Layer for Versioning"), self.iface.mainWindow())
self.actionLoad = QAction(QIcon(":/plugins/pgversion/icons/pgversion-commit.png"), self.tr("Load Versioned Layer"), self.iface.mainWindow())
self.actionCommit = QAction(QIcon(":/plugins/pgversion/icons/pgversion-load.png"), self.tr("Commit Changes"), self.iface.mainWindow())
self.actionRevert = QAction(QIcon(":/plugins/pgversion/icons/pgversion-revert.png"), self.tr("Revert to HEAD Revision"), self.iface.mainWindow())
self.actionLogView = QAction(QIcon(":/plugins/pgversion/icons/pgversion-logview.png"), self.tr("Show Logs"), self.iface.mainWindow())
self.actionDiff = QAction(QIcon(":/plugins/pgversion/icons/pgversion-diff.png"), self.tr("Show Diffs"), self.iface.mainWindow())
# self.actionCommit.setEnabled(False)
self.actionDrop = QAction(QIcon(":/plugins/pgversion/icons/pgversion-drop.png"), self.tr("Drop Versioning from Layer"), self.iface.mainWindow())
self.actionHelp = QAction(QIcon(""), self.tr("Help"), self.iface.mainWindow())
self.actionAbout = QAction(QIcon(""), self.tr("About"), self.iface.mainWindow())
self.actionDelete = QAction(QIcon(":/plugins/pgversion/icons/pgversion-drop.png"), self.tr("Bulk delete directly in the database"), self.iface.mainWindow())
self.actionDelete.setEnabled(False)
self.actionList = [ self.actionInit,self.actionLoad, self.actionCommit, self.actionDiff, self.actionRevert, self.actionLogView, self.actionDrop, self.actionLogView, self.actionDelete, self.actionHelp, self.actionAbout]
# self.actionList = [ self.actionInit,self.actionLoad,self.actionCommit,self.actionRevert, self.actionLogView, self.actionDrop, self.actionLogView, self.actionHelp, self.actionAbout]
self.toolBar.addAction(self.actionInit)
self.toolBar.addAction(self.actionLoad)
self.toolBar.addAction(self.actionCommit)
self.toolBar.addAction(self.actionRevert)
self.toolBar.addAction(self.actionDiff)
self.toolBar.addAction(self.actionLogView)
self.toolBar.addAction(self.actionDelete)
# Add the Menubar into the new Database Main Menue starting with QGIS1.7
try:
for a in self.actionList:
self.iface.addPluginToDatabaseMenu("PG Version", a)
except AttributeError:
# For former QGIS Versions use the old Main Menue
self.menu = QMenu()
self.menu.setTitle( "PG Version" )
self.menu.addActions(self.actionList)
self.menuBar = self.iface.mainWindow().menuBar()
self.menuBar.addMenu(self.menu)
# connect the action to the run method
self.actionInit.triggered.connect(self.doInit)
self.actionLoad.triggered.connect(self.doLoad)
self.actionDiff.triggered.connect(self.doDiff)
self.actionCommit.triggered.connect(self.doCommit)
self.actionRevert.triggered.connect(self.doRevert)
self.actionLogView.triggered.connect(self.doLogView)
self.actionDrop.triggered.connect(self.doDrop)
self.actionHelp.triggered.connect(self.doHelp)
self.actionAbout.triggered.connect(self.doAbout)
self.actionDelete.triggered.connect(self.doDelete)
self.LogViewDialog.diffLayer.connect(self.doDiff)
self.LogViewDialog.rollbackLayer.connect(self.doRollback)
self.LogViewDialog.checkoutLayer.connect(self.doCheckout)
self.LogViewDialog.checkoutTag.connect(self.doCheckout)
for a in self.iface.digitizeToolBar().actions():
if a.objectName() == 'mActionToggleEditing':
a.triggered.connect(self.onSelectionChanged)
self.iface.mapCanvas().selectionChanged.connect(self.onSelectionChanged)
QgsMapLayerRegistry.instance().layerWasAdded.connect(self.add_layer)
QgsMapLayerRegistry.instance().layerWillBeRemoved.connect(self.remove_layer)
def onSelectionChanged(self):
current_layer = self.iface.mapCanvas().currentLayer()
if current_layer is not None:
if (current_layer.type() == QgsMapLayer.VectorLayer) and current_layer.selectedFeatureCount() == 0:
self.actionDelete.setEnabled(False)
else:
if self.tools.hasVersion(current_layer):
if current_layer.isEditable():
self.actionDelete.setEnabled(True) # true
else:
self.actionDelete.setEnabled(False)
else:
self.actionDelete.setEnabled(False) # true
def add_layer(self, l):
if self.tools.hasVersion(l):
if l.id not in self.layer_list:
l.editingStopped.connect(lambda my_list = self.layer_list: self.tools.setModified(my_list))
self.layer_list.append(l.id())
self.tools.setModified(self.layer_list)
def remove_layer(self, id):
self.layer_list = list(set(self.layer_list))
if id in set(self.layer_list):
self.layer_list.remove(id)
def unload(self):
# remove menubar
try:
for a in self.actionList:
self.iface.removePluginDatabaseMenu("PG Version", a)
except:
del self.menuBar
del self.toolBar
def doDelete(self):
res = QMessageBox.question(
None,
self.tr("Question"),
self.tr("Are you sure to delete all selected features. You cannot undo this action!"),
QMessageBox.StandardButtons(
QMessageBox.No |
QMessageBox.Yes))
if res == QMessageBox.Yes:
QApplication.restoreOverrideCursor()
canvas = self.iface.mapCanvas()
currentLayer = canvas.currentLayer()
mySchema = self.tools.layerSchema(currentLayer)
myTable = self.tools.layerTable(currentLayer)
myPkey = QgsDataSourceURI(currentLayer.dataProvider().dataSourceUri()).keyColumn()
myDb = self.tools.layerDB('doInit',currentLayer)
selectedFeatures = currentLayer.selectedFeatures()
delete_list = "("
if currentLayer.selectedFeatureCount() > 0:
for feature in selectedFeatures:
delete_list += str(feature.attributes()[0])+", "
delete_list = delete_list[:-2]
delete_list += ")"
sql = "delete from \"%s\".\"%s\" where \"%s\" in %s" % (mySchema, myTable, myPkey, delete_list)
QApplication.setOverrideCursor(Qt.WaitCursor)
myDb.run(sql)
QApplication.restoreOverrideCursor()
currentLayer.removeSelection()
currentLayer.triggerRepaint()
self.tools.setModified(self.layer_list)
# self.actionDelete.setEnabled(false)
def doInit(self):
canvas = self.iface.mapCanvas()
currentLayer = canvas.currentLayer()
if currentLayer == None:
QMessageBox.information(None, '', self.tr('Please select a layer for versioning'))
return
elif self.tools.hasVersion(currentLayer):
QMessageBox.warning(None, self.tr('Warning'), self.tr('The selected layer is already under versioning!'))
return
else:
mySchema = self.tools.layerSchema(currentLayer)
myTable = self.tools.layerTable(currentLayer)
myDb = self.tools.layerDB('doInit',currentLayer)
if not self.tools.check_PGVS_revision(myDb):
return
if not self.tools.versionExists(currentLayer):
answer = QMessageBox.question(None, '', self.tr('Do you want to create the version environment for the table {0}').format(mySchema+'.'+myTable), self.tr('Yes'), self.tr('No'))
QApplication.setOverrideCursor(Qt.WaitCursor)
sql = "select * from versions.pgvsinit('%s.%s')" % (mySchema, myTable)
result = myDb.runError(sql)
if result == ' ':
sql = "GRANT ALL ON TABLE %s.%s TO versions" % (mySchema, myTable);
grant_result = myDb.runError(sql)
QMessageBox. information(None, 'Init', self.tr( 'Init was successful!\n\n\
Please set the user permissions for table {0} and reload it via Database -> PG Version!').format(myTable))
QgsMapLayerRegistry.instance().removeMapLayer(currentLayer.id())
QApplication.restoreOverrideCursor()
else:
self.iface.messageBar().pushMessage(self.tr('Init Error'), self.tr('Versioning envoronment for table {0} already exsists!').format(mySchema+"."+myTable), level=QgsMessageBar.CRITICAL, duration=3)
def doLoad(self):
self.dlg = PgVersionLoadDialog(self)
self.dlg.show()
def doRollback(self, item):
if item == None:
QMessageBox.information(None, self.tr('Error'), self.tr('Please select a valid revision'))
return
revision = item.text(0)
canvas = self.iface.mapCanvas()
currentLayer = canvas.currentLayer()
if currentLayer == None:
QMessageBox.information(None, '', self.tr('Please select a versioned layer'))
return
else:
answer = QMessageBox.question(None, '', self.tr('Are you sure to rollback to revision {0}?').format(revision), self.tr('Yes'), self.tr('No'))
if answer == 0:
if self.tools.isModified(currentLayer):
answer = QMessageBox.question(None, '', \
self.tr('Layer {0} has modifications which will be lost after rollback! \
If you want to keep this modifications please commit them. \
Are you sure to rollback to revision {1}?').format(currentLayer.name(), revision), self.tr('Yes'), self.tr('No'))
if answer == 1:
return
QApplication.setOverrideCursor(Qt.WaitCursor)
provider = currentLayer.dataProvider()
uri = provider.dataSourceUri()
myDb = self.tools.layerDB('doRollback',currentLayer)
if not self.tools.check_PGVS_revision(myDb):
return
mySchema = QgsDataSourceURI(uri).schema()
if len(mySchema) == 0:
mySchema = 'public'
myTable = QgsDataSourceURI(uri).table()
sql = "select * from versions.pgvsrollback('"+mySchema+"."+myTable.replace('_version', '')+"',"+revision+")"
myDb.run(sql)
myDb.close()
self.LogViewDialog.close()
currentLayer.triggerRepaint()
QApplication.restoreOverrideCursor()
self.tools.setModified(self.layer_list)
self.iface.messageBar().pushMessage('INFO', self.tr('Rollback to revision {0} was successful!').format(revision), level=QgsMessageBar.INFO, duration=3)
return
def doCommit(self):
canvas = self.iface.mapCanvas()
if canvas.currentLayer() == None:
self.iface.messageBar().pushMessage('Error', self.tr('Please select a versioned layer for committing'), level=QgsMessageBar.CRITICAL, duration=3)
return
canvas = self.iface.mapCanvas()
theLayer = canvas.currentLayer()
mySchema = self.tools.layerSchema(theLayer)
myTable = self.tools.layerTable(theLayer).replace('_version', '')
if not self.tools.hasVersion(theLayer):
QMessageBox.warning(None, self.tr('Warning'), self.tr('Please select a versioned layer!'))
else:
if self.tools.isModified(theLayer):
confRecords = self.tools.confRecords(theLayer)
if confRecords == None:
# show the dialog
self.dlgCommitMessage = CommitMessageDialog()
self.dlgCommitMessage.show()
result = self.dlgCommitMessage.exec_()
if result == QDialog.Accepted:
QApplication.setOverrideCursor(Qt.WaitCursor)
sql = "select * from versions.pgvscommit('%s.%s','%s')" % (mySchema, myTable, self.dlgCommitMessage.textEdit.toPlainText())
myDB = self.tools.layerDB('commit', theLayer)
myDB.run(sql)
myDB.close()
self.tools.layerRepaint()
self.iface.messageBar().pushMessage("Info", self.tr('Commit of your changes was successful'), level=QgsMessageBar.INFO, duration=3)
self.tools.setModified(self.layer_list)
QApplication.restoreOverrideCursor()
else:
if self.w != None:
self.w = None
self.w = ConflictWindow(theLayer, 'conflict', self)
self.w.mergeCompleted.connect(self.doCommit)
self.w.show()
self.tools.setModified(self.layer_list)
else:
self.iface.messageBar().pushMessage('INFO', self.tr('No layer changes for committing, everything is OK'), level=QgsMessageBar.INFO, duration=3)
self.tools.setModified(self.layer_list)
def doCheckout(self, revision, tag=None):
if revision == None:
QMessageBox.information(None, self.tr('Error'), self.tr('Please select a valid revision'))
return
# revision = item.text(0)
canvas = self.iface.mapCanvas()
currentLayer = canvas.currentLayer()
if currentLayer == None:
QMessageBox.information(None, '', self.tr('Please select a versioned layer'))
return
else:
answer = QMessageBox.question(None, '', self.tr('Are you sure to checkout the layer to revision {0}?').format(revision), self.tr('Yes'), self.tr('No'))
if answer == 0:
QApplication.setOverrideCursor(Qt.WaitCursor)
provider = currentLayer.dataProvider()
uri = provider.dataSourceUri()
uniqueCol = QgsDataSourceURI(uri).keyColumn()
geomCol = QgsDataSourceURI(uri).geometryColumn()
geometryType = currentLayer.geometryType()
mySchema = QgsDataSourceURI(uri).schema()
myTable = QgsDataSourceURI(uri).table()
if len(mySchema) == 0:
mySchema = 'public'
sql = "select * from versions.pgvscheckout(NULL::\""+mySchema+"\".\""+myTable.replace('_version', '')+"\", "+revision+")"
myUri = QgsDataSourceURI(uri)
myUri.setDataSource("", u"(%s\n)" % (sql), geomCol, "", uniqueCol)
layer = None
if tag:
table_ext = " (Tag: %s)" % tag
else:
table_ext = " (Revision: %s)" % revision
layer = QgsVectorLayer(myUri.uri(), myTable+table_ext, "postgres")
QgsMapLayerRegistry.instance().addMapLayer(layer)
QApplication.restoreOverrideCursor()
if layer.isValid():
self.iface.messageBar().pushMessage('INFO', self.tr('Checkout to revision {0} was successful!').format(revision), level=QgsMessageBar.INFO, duration=3)
layer.triggerRepaint()
else:
self.iface.messageBar().pushMessage('INFO', self.tr('Something went wrong during checkout to revision {0}!').format(revision), level=QgsMessageBar.INFO, duration=3)
self.LogViewDialog.close()
return
def doRevert(self):
canvas = self.iface.mapCanvas()
theLayer = self.iface.activeLayer()
provider = theLayer.dataProvider()
uri = provider.dataSourceUri()
myDb = self.tools.layerDB('revert', theLayer)
mySchema = QgsDataSourceURI(uri).schema()
myTable = QgsDataSourceURI(uri).table()
if not self.tools.hasVersion(theLayer):
QMessageBox.warning(None, self.tr('Warning'), self.tr('Please select a versioned layer!'))
else:
if len(mySchema) == 1:
mySchema = 'public'
answer = QMessageBox.question(None, '', self.tr('are you sure to revert to the HEAD revision?'), self.tr('Yes'), self.tr('No'))
if answer == 0:
sql = "select * from versions.pgvsrevert('"+mySchema+"."+myTable.replace('_version', '')+"')"
result = myDb.read(sql)
if len(result)>1:
QMessageBox.information(None, '',result)
else:
self.iface.messageBar().pushMessage("Info", self.tr('All changes are set back to the HEAD revision: {0}').format(str(result["PGVSREVERT"][0])), level=QgsMessageBar.INFO, duration=3)
self.tools.setModified(self.layer_list)
theLayer.triggerRepaint()
myDb.close()
pass
def doLogView(self):
canvas = self.iface.mapCanvas()
theLayer = self.iface.activeLayer()
if theLayer <> None:
if not self.tools.hasVersion(theLayer):
QMessageBox.warning(None, self.tr('Warning'), self.tr('Please select a versioned layer!'))
else:
provider = theLayer.dataProvider()
uri = provider.dataSourceUri()
myDb = self.tools.layerDB('logview', theLayer)
mySchema = QgsDataSourceURI(uri).schema()
myTable = QgsDataSourceURI(uri).table()
if len(mySchema) == 0:
mySchema = 'public'
sql = "select * from versions.pgvslogview('"+mySchema+"."+myTable.replace('_version', '')+"') order by revision desc"
result = myDb.read(sql)
logHTML = "<html><head></head><body><Table>"
self.LogViewDialog.setLayer(theLayer)
self.LogViewDialog.createTagList()
self.LogViewDialog.treeWidget.clear()
itemList = []
for i in range(len(result["PROJECT"])):
myItem = QTreeWidgetItem()
myItem.setText(0, result["REVISION"][i])
myItem.setText(1, result["DATUM"][i])
myItem.setText(2, result["PROJECT"][i])
myItem.setText(3, result["LOGMSG"][i])
itemList.append(myItem)
self.LogViewDialog.treeWidget.addTopLevelItems(itemList)
self.LogViewDialog.show()
myDb.close()
canvas.refresh()
if not self.tools.hasVersion(theLayer):
QMessageBox.warning(None, self.tr('Warning'), self.tr('Please select a versioned layer!'))
else:
provider = theLayer.dataProvider()
uri = provider.dataSourceUri()
myDb = self.tools.layerDB('logview', theLayer)
mySchema = QgsDataSourceURI(uri).schema()
myTable = QgsDataSourceURI(uri).table()
if len(mySchema) == 0:
mySchema = 'public'
sql = "select * from versions.pgvslogview('"+mySchema+"."+myTable.replace('_version', '')+"') order by revision desc"
result = myDb.read(sql)
logHTML = "<html><head></head><body><Table>"
self.LogViewDialog.setLayer(theLayer)
self.LogViewDialog.createTagList()
self.LogViewDialog.treeWidget.clear()
itemList = []
for i in range(len(result["PROJECT"])):
myItem = QTreeWidgetItem()
myItem.setText(0, result["REVISION"][i])
myItem.setText(1, result["DATUM"][i])
myItem.setText(2, result["PROJECT"][i])
myItem.setText(3, result["LOGMSG"][i])
itemList.append(myItem)
self.LogViewDialog.treeWidget.addTopLevelItems(itemList)
self.LogViewDialog.show()
myDb.close()
canvas.refresh()
pass
def doDiff(self):
canvas = self.iface.mapCanvas()
currentLayer = canvas.currentLayer()
myDb = self.tools.layerDB('logview', currentLayer)
if currentLayer == None:
QMessageBox.information(None, '', self.tr('Please select a versioned layer'))
return
else:
# answer = QMessageBox.question(None, '', self.tr('Are you sure to checkout diffs to HEAD revision?'), self.tr('Yes'), self.tr('No'))
answer = 0
if answer == 0:
QApplication.setOverrideCursor(Qt.WaitCursor)
uniqueCol = self.tools.layerKeyCol(currentLayer)
geomCol = self.tools.layerGeomCol(currentLayer)
geometryType = self.tools.layerGeometryType(currentLayer)
mySchema = self.tools.layerSchema(currentLayer)
myTable = self.tools.layerTable(currentLayer)
if len(mySchema) == 0:
mySchema = 'public'
sql = u"select * from \"%s\".\"%s\" limit 0" % (mySchema, myTable)
cols = myDb.cols(sql)
myCols = ', '.join(cols)+', st_asewkb("'+geomCol+'")'
extent = self.iface.mapCanvas().extent().toString().replace(':',',')
authority, crs = currentLayer.crs().authid().split(':')
geo_idx = '%s && ST_MakeEnvelope(%s,%s)' % (geomCol, extent, crs)
sql = ("with \
head as (select max(revision) as head from versions.\"{schema}_{origin}_version_log\"), \
delete as (\
select 'delete'::varchar as action, * \
from (\
select * from versions.pgvscheckout(NULL::\"{schema}\".\"{origin}\",(select * from head), \'{geo_idx}\') \
except \
select * from \"{schema}\".\"{origin}_version\" where {geo_idx}\
) as foo \
), \
insert as (\
select 'insert'::varchar as action, * \
from ( \
select * from \"{schema}\".\"{origin}_version\" where {geo_idx} \
except \
select * from versions.pgvscheckout(NULL::\"{schema}\".\"{origin}\",(select * from head), \'{geo_idx}\') \
) as foo) \
\
select row_number() OVER () AS rownum, * \
from \
(\
select * from delete \
union \
select * from insert) as foo").format(schema = mySchema, table=myTable, origin=myTable.replace('_version', ''), geo_idx = geo_idx)
myUri = QgsDataSourceURI(self.tools.layerUri(currentLayer))
myUri.setDataSource("", u"(%s\n)" % sql, geomCol, "", "rownum")
layer_name = myTable+" (Diff to HEAD Revision)"
layer = QgsVectorLayer(myUri.uri(), layer_name, "postgres")
mem_layer = self.tools.create_memory_layer(layer, layer_name )
if not mem_layer.isValid():
self.iface.messageBar().pushMessage('WARNING', self.tr('No diffs to HEAD detected! Layer could not be loaded.'), level=QgsMessageBar.INFO, duration=3)
else:
userPluginPath = QFileInfo(QgsApplication.qgisUserDbFilePath()).path()+"/python/plugins/pgversion"
mem_layer.setRendererV2(None)
if geometryType == 0:
mem_layer.loadNamedStyle(userPluginPath+"/legends/diff_point.qml")
elif geometryType == 1:
mem_layer.loadNamedStyle(userPluginPath+"/legends/diff_linestring.qml")
elif geometryType == 2:
mem_layer.loadNamedStyle(userPluginPath+"/legends/diff_polygon.qml")
QgsMapLayerRegistry.instance().addMapLayer(mem_layer)
self.iface.messageBar().pushMessage('INFO', self.tr('Diff to HEAD revision was successful!'), level=QgsMessageBar.INFO, duration=3)
QApplication.restoreOverrideCursor()
self.LogViewDialog.close()
return
def doDrop(self):
# try:
theLayer = self.iface.activeLayer()
provider = theLayer.dataProvider()
uri = provider.dataSourceUri()
mySchema = QgsDataSourceURI(uri).schema()
if len(mySchema) == 0:
mySchema = 'public'
myTable = QgsDataSourceURI(uri).table()
if theLayer == None:
QMessageBox.information(None, '', self.tr('Please select a layer for versioning'))
return
else:
answer = QMessageBox.question(None, '', self.tr('are you sure to to drop pgvs from the table {0}?').format(mySchema+"."+myTable.replace('_version', '')), self.tr('Yes'), self.tr('No'))
if answer == 0:
if self.tools.isModified(theLayer):
QMessageBox.warning(None, self.tr('Warning'), \
self.tr('Layer %s has uncommited changes, please commit them or revert to HEAD revision' % (theLayer.name())))
else:
myDb = self.tools.layerDB('doDrop',theLayer)
sql = "select versions.pgvsdrop('"+mySchema+"."+myTable.replace('_version', '')+"')"
result = myDb.read(sql)
myDb.close()
layer_name = theLayer.name()
QgsMapLayerRegistry.instance().removeMapLayer(theLayer.id())
self.iface.messageBar().pushMessage('INFO', self.tr('Versioning for layer {0} dropped!').format(layer_name), level=QgsMessageBar.INFO, duration=3)
def doHelp(self):
helpUrl = QUrl()
helpUrl.setUrl('file://'+self.plugin_path+'/docs/help.html')
self.helpDialog.webView.load(helpUrl)
self.helpDialog.show()
pass
def doAbout(self):
self.about = DlgAbout(self.plugin_path)
self.about.show()