[ADD] product : Override create method in order to check 'Min margin' and 'Max margin'.

bzr revid: mdi@tinyerp.com-20120924121542-0031rv1ozrxlvc9a

addons/product/pricelist.py

@@ -434,13 +434,22 @@ class product_pricelist_item(osv.osv):
         if prod[0]['code']:
             return {'value': {'name': prod[0]['code']}}
         return {}
-
-    def write(self, cr, uid, ids, vals, context=None):
-        name = self.browse(cr, uid, ids, context=context)[0].name
+    
+    def create(self, cr, uid, vals, context=None):
+        name = vals.get('name', '')
         price_min_margin = vals.get('price_min_margin', 0.0)
         price_max_margin = vals.get('price_max_margin', 0.0)
         if price_min_margin > price_max_margin:
             raise osv.except_osv(_('Warning!'), _('Minimum margin must be lower than maximum margin in \'%s\' pricelist rule !.') % (name))
+        return super(product_pricelist_item, self).create(cr, uid, vals, context=context)
+
+    def write(self, cr, uid, ids, vals, context=None):
+        price_min_margin = vals.get('price_min_margin', 0.0)
+        price_max_margin = vals.get('price_max_margin', 0.0)
+        for rule in self.browse(cr, uid, ids, context=context):
+            name = rule.name
+            if price_min_margin > price_max_margin:
+                raise osv.except_osv(_('Warning!'), _('Minimum margin must be lower than maximum margin in \'%s\' pricelist rule !.') % (name))
         return super(product_pricelist_item, self).write(cr, uid, ids, vals, context=context)