Fix name collision between PopdownMixin and Reference widget

get_model is already used in Reference widget inherited from the Many2One
widget. So it is renamed into get_popdown_model.

tryton/common/selection.py

@@ -112,7 +112,7 @@ class PopdownMixin(object):
     def set_popdown(self, selection, entry):
         if not entry.child:  # entry is destroyed
             return
-        model, lengths = self.get_model(selection)
+        model, lengths = self.get_popdown_model(selection)
         entry.set_model(model)
         # GTK 2.24 and above use a ComboBox instead of a ComboBoxEntry
         if hasattr(entry, 'set_text_column'):
@@ -137,7 +137,7 @@ class PopdownMixin(object):
         completion.set_text_column(0)
         completion.connect('match-selected', self.match_selected, entry)
 
-    def get_model(self, selection):
+    def get_popdown_model(self, selection):
         model = gtk.ListStore(gobject.TYPE_STRING, gobject.TYPE_PYOBJECT)
         lengths = []
         for (value, name) in selection:

tryton/gui/window/view_form/view/list_gtk/parser.py

@@ -929,7 +929,7 @@ class Selection(Char, SelectionMixin, PopdownMixin):
         self.renderer = CellRendererCombo()
         self.renderer.connect('editing-started', self.editing_started)
         self.init_selection()
-        self.renderer.set_property('model', self.get_model(self.selection)[0])
+        self.renderer.set_property('model', self.get_popdown_model(self.selection)[0])
         self.renderer.set_property('text-column', 0)
 
     def get_textual_value(self, record):