añadido addon desde la tienda de apps de Odoo. Imal-Tech

default_product_image/models/__init__.py

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+# -*- coding: utf-8 -*-
+
+from . import res_config
+from . import product_template

default_product_image/models/product_template.py

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+# -*- coding: utf-8 -*-
+
+from odoo import models, fields, api, tools
+
+
+class ProductTemplate(models.Model):
+    """ Inherit Product Template Settings to add default image product from setting """
+    _inherit = "product.template"
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        for val_list in vals_list:
+            if not val_list['image_1920']:
+                product_default_image = self.env['ir.config_parameter'].sudo().get_param(
+                    'res.config.settings.product_default_image')
+                if product_default_image:
+                    val_list['image_1920'] = product_default_image
+
+        return super(ProductTemplate, self).create(vals_list)

default_product_image/models/res_config.py

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+# -*- coding: utf-8 -*-
+
+from odoo import models, fields, _, api
+
+
+class ResConfig(models.TransientModel):
+    """ Inherit Res Config Settings to add default image product field """
+    _inherit = 'res.config.settings'
+
+    product_default_image = fields.Binary(string="Default Image")
+
+    @api.model
+    def get_values(self):
+        res = super(ResConfig, self).get_values()
+        res.update(
+            product_default_image=self.env['ir.config_parameter'].sudo().get_param(
+                'res.config.settings.product_default_image'),
+        )
+        return res
+
+    def set_values(self):
+        super(ResConfig, self).set_values()
+        param = self.env['ir.config_parameter'].sudo()
+        param.set_param('res.config.settings.product_default_image', self.product_default_image)