[9.0][IMP] rma: add button to rma's from customers

rma/models/res_partner.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+# Copyright 2017 Eficent Business and IT Consulting Services S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+from openerp import api, fields, models
+
+
+class ResPartner(models.Model):
+    _inherit = "res.partner"
+
+    @api.multi
+    def _compute_rma_line_count(self):
+        for rec in self:
+            rec.rma_line_count = len(rec.rma_line_ids)
+
+    rma_line_ids = fields.One2many(
+        comodel_name="rma.order.line", string="RMAs",
+        inverse_name="partner_id",
+    )
+    rma_line_count = fields.Integer(compute="_compute_rma_line_count")
+
+    @api.multi
+    def action_open_partner_rma(self):
+        action = self.env.ref('rma.action_rma_customer_lines')
+        result = action.read()[0]
+        result['context'] = {'search_default_partner_id': self.id}
+        return result