Merge pull request #128 from pgRouting/cayetanobv/fixed_pgr_version

Fixed version check for pgRouting v3 support

Author: cayetanobv

README.md

@@ -43,6 +43,6 @@ This plugin can be installed using the QGIS Plugin Manager.
 
 ### Dependencies
 
-pgRouting v2.x up and running to use this plugin.
+pgRouting v3.x up and running to use this plugin.
 
 Additionally, QGIS needs python-psycopg2 installed to be able to connect to the database.

docs/index.md

@@ -37,7 +37,7 @@ This plugin can be installed using the QGIS Plugin Manager.
 ### Dependencies
 
 - This plugin runs only with QGIS 3.x and Python 3.
-- pgRouting v2.x up and running to use this plugin.
+- pgRouting v3.x up and running to use this plugin.
 - Additionally, QGIS needs python-psycopg2 installed to be able to connect to the database.
 
 ## Links

pgRoutingLayer_utils.py

@@ -129,7 +129,7 @@ def getPgrVersion(con):
     ''' returns version of PostgreSQL database. '''
     try:
         cur = con.cursor()
-        cur.execute('SELECT version FROM pgr_version()')
+        cur.execute('SELECT pgr_version FROM pgr_version()')
         row = cur.fetchone()[0]
         versions = ''.join([i for i in row if i.isdigit()])
         version = versions[0]