Hello,

I created a module that add on stock.location, product.product, stock.picking and res.users a many2one field : warehouse_id.

from osv import osv, fields

class res_users(osv.osv):
    _name       = 'res.users'
    _inherit    = 'res.users'

    _columns = {
        'warehouse_id': fields.many2one('stock.warehouse', 'Entrepot'),
    }
res_users()

class stock_picking(osv.osv):
    _name       = 'stock.picking'
    _inherit    = 'stock.picking'

    _columns = {
        'warehouse_id': fields.many2one('stock.warehouse', 'Entrepot', required=True),
    }
stock_picking()

class stock_location(osv.osv):
    _name       = 'stock.location'
    _inherit    = 'stock.location'

    _columns = {
        'warehouse_id': fields.many2one('stock.warehouse', 'Entrepot', required=True),
    }
stock_location()

class product_product(osv.osv):
    _name = 'product.product'
    _inherit = 'product.product'

    _columns = {
        'warehouse_id': fields.many2one('stock.warehouse', 'Entrepot', required=True),
    }
product_product()

Then, I added record rule on stock.location, product.product and stock.picking like that :

[('warehouse_id', '=', user.warehouse_id.id)]

And the problem is when I try to load the tree view of product.product, it shows me :

AccessError Operation prohibited by access rules, or performed on an already deleted document (Operation: read, Document type: Stock Location).

Does anyone have an idea to solve this problem or what am I doing wrong ?

Thank you a lot !