base: add constraint uniq module name

bzr revid: ced-142ae303eb9bebeafc029e9b511c04355ea449ba

bin/addons/base/base.sql

@@ -320,6 +320,7 @@ CREATE TABLE ir_module_module (
     demo boolean default False,
     primary key(id)
 );
+ALTER TABLE ir_module_module add constraint name_uniq unique (name);
 
 CREATE TABLE ir_module_module_dependency (
     id serial NOT NULL,

bin/addons/base/module/module.py

@@ -115,6 +115,10 @@ class module(osv.osv):
 	}
 	_order = 'name'
 
+	_sql_constraints = [
+		('name_uniq', 'unique (name)', 'The name of the module must be unique !')
+	]
+
 	def state_change(self, cr, uid, ids, newstate, context={}, level=50):
 		if level<1:
 			raise 'Recursion error in modules dependencies !'