minor bug fixining

view/weighing_form.xml

@@ -17,7 +17,7 @@
   <field name="table"/>
   <label name="ecological"/>
   <field name="ecological"/>
-  <group col="6" colspan="4">
+  <group col="6" colspan="4" id="weight">
     <label name="weight"/>
     <field name="weight"/>
     <label name="tara"/>

weighing.py

@@ -211,7 +211,7 @@ class Weighing(Workflow, ModelSQL, ModelView):
         return parcel.product and parcel.product.id
 
     @fields.depends('plantations')
-    def on_change_with_contract(self):
+    def on_change_with_purchase_contract(self):
         parcel = self.get_parcel()
         if not parcel:
             return