[ADD] website_sale: new module

This module adds a website form to allows to create an RMA from scratch

website_rma/models/ir_model.py

@@ -0,0 +1,23 @@
+# Copyright 2020 Tecnativa - Ernesto Tejeda
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, models
+
+
+class IrModel(models.Model):
+    _inherit = 'ir.model'
+
+    @api.model
+    def get_authorized_fields(self, model_name):
+        """Hack this method to force some rma fields to be authorized in
+        creating an object from a web form using the website_form module.
+
+        Those fields are readonly in all states except 'draft' state,
+        but the main method get_authorized_fields interprets them as
+        readonly always.
+        """
+        res = super().get_authorized_fields(model_name)
+        if model_name == 'rma':
+            auth_fields = ['product_uom_qty', 'product_uom', 'partner_id']
+            res.update(self.env[model_name].fields_get(auth_fields))
+        return res