set layer's crs added by the plugin to the selected crs

plugin.py

@@ -162,7 +162,7 @@ def remove_plugin_toolbar(self):
             self.iface.mainWindow().removeToolBar(self.plugin_toolbar)
             self.plugin_toolbar.hide()
 
-    def set_database_connection(self, connection=None):
+    def set_database_connection(self, connection=None, crs=None):
         """ Create a database connection
         """
         # fetch settings
@@ -171,20 +171,23 @@ def set_database_connection(self, connection=None):
         settings_plugin.beginGroup(metadata.name().replace(" ", "_"))
         settings_postgis.beginGroup('PostgreSQL/connections')
         self.connection = connection
+        self.crs = crs
         if not bool(self.connection):
             # fetch pre-chosen database connection
             self.connection = settings_plugin.value("DatabaseConnection", None)
         # check if still exists
         if bool(self.connection):
             if self.connection not in settings_postgis.childGroups():
                 settings_plugin.setValue("DatabaseConnection", "")
-                connection = None
+                self.connection = None
         # fetch from user if necessary
         if not bool(self.connection):
             dialog = DatabaseConnectionDialog()
             dialog.show()
             if bool(dialog.exec_()):
                 self.connection = dialog.get_database_connection()
+                self.crs = QgsCoordinateReferenceSystem(
+                    dialog.get_crs().get('auth_id'))
                 settings_plugin.setValue("DatabaseConnection", self.connection)
         # validate database connection
         if bool(self.connection):
@@ -299,6 +302,8 @@ def refresh_layers(self):
                             required_layer.layer = layer
                             self.iface.legendInterface().setLayerVisible(
                                 layer, True)
+                            if self.crs:
+                                layer.setCrs(self.crs)
                     self.iface.zoomToActiveLayer()
 
     def manage_beacons(self):
@@ -345,9 +350,10 @@ def manage_database_connection(self):
         """ Action to select the db connection to work with.
         """
         database_manager = DatabaseManager()
-        connection = database_manager.current_connection
+        connection = database_manager.get_current_connection()
+        crs = database_manager.get_current_crs()
         if connection:
-            self.set_database_connection(connection=connection)
+            self.set_database_connection(connection=connection, crs=crs)
 
 
 class DatabaseManager():
@@ -356,13 +362,23 @@ def __init__(self):
         self.dialog = DatabaseConnectionDialog()
         self.dialog.show()
         self.current_connection = None
+        self.current_crs = None
         if bool(self.dialog.exec_()):
             self.current_connection = self.dialog.get_database_connection()
+            self.current_crs = self.dialog.get_crs()
             settings_plugin = QSettings()
             settings_plugin.beginGroup(metadata.name().replace(" ", "_"))
             settings_plugin.setValue(
                 "DatabaseConnection", self.current_connection)
 
+    def get_current_connection(self):
+
+        return self.current_connection
+
+    def get_current_crs(self):
+
+        return self.current_crs
+
 
 class BeaconManager():