- change self.image by record.image

in inverse _save_image_medium method

- add class css and size 100px image in product category form view

pos_remove_pos_category/product.py

@@ -45,7 +45,8 @@ class ProductCategory(models.Model):
     _inherit = 'product.category'
 
     image = fields.Binary(help='Show Image Category in Form View')
-    image_medium = fields.Binary(help='Show image category button in POS', inverse='_save_image_medium')
+    image_medium = fields.Binary(help='Show image category button in POS',
+                                 inverse='_save_image_medium')
     available_in_pos = fields.Boolean(
         string="Available in the Point of Sale",
         default=True,
@@ -57,7 +58,7 @@ class ProductCategory(models.Model):
     def _save_image_medium(self):
         for record in self:
             if record.image:
-                temp = tools.image_get_resized_images(self.image)
+                temp = tools.image_get_resized_images(record.image)
                 record.image_medium = temp['image_medium']
             else:
                 record.image_medium = None

pos_remove_pos_category/views/pos_category.xml

@@ -15,7 +15,7 @@
             <field name="priority">20</field>
             <field name="arch" type="xml">
                 <xpath expr="//group[@name='parent']" position="inside">
-                    <field name="image" widget="image"/>
+                    <field name="image" widget="image" class="oe_left oe_avatar" options='{"size": [100, 100]}' />
                     <field name="available_in_pos"/>
                 </xpath>
             </field>