fixup

Author: bealdav

label_wizard/views/product.xml

@@ -1,11 +1,10 @@
 <odoo>
-
     <record id="action_label_from_record_wizard" model="ir.actions.act_window">
         <field name="name">🏷 Imprimer étiquettes produits</field>
         <field name="type">ir.actions.act_window</field>
         <field name="res_model">label.from.record</field>
         <field name="view_mode">form</field>
-        <field name="view_id" ref="label_from_record_wizard_view"/>
+        <field name="view_id" ref="label_from_record_wizard_view" />
         <field name="target">new</field>
     </record>
 
@@ -14,9 +13,12 @@
         <field name="inherit_id" ref="product.product_normal_form_view" />
         <field name="arch" type="xml">
             <xpath expr="//header/button" position="before">
-                <button string="🖨" name="%(action_label_from_record_wizard)d" type="action"/>
+                <button
+                    string="🖨"
+                    name="%(action_label_from_record_wizard)d"
+                    type="action"
+                />
             </xpath>
         </field>
     </record>
-
 </odoo>

label_wizard/wizard/label2print.py

@@ -89,7 +89,18 @@ def generate_label(self):
                 if data4print:
                     model = data4print[0][0].browse(False)
                     content_params = {"with_price": rec.with_price}
-                    return model._get_zebra_labels(data4print, content_params)
+                    method = model._get_zebra_labels
+                    if method:
+                        return method(data4print, content_params)
+                    else:
+                        raise UserError(
+                            _(
+                                f"Model {model._name} has no attribute"
+                                "_get_zebra_labels.\nConsider to install "
+                                "'label_helper' module or implements your own "
+                                "behavior in your custom module"
+                            )
+                        )
         return {"type": "ir.actions.act_window_close"}
 
     @api.model