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Hi,

I'm using odoo 12 and I have a model called "shift", this shift is related to user (user_id), and has a selection field called status with options: (open, closed)

i want to ensure that user can't open 2 shifts at the same time

he can have a lot of closed shifts but if he has one open shift he can't open another one

anyone can help me with creating the constraint and i'll be thankful 

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Найкраща відповідь

You can apply constrains on two fields-

@api.constrains('user_id', 'status')

def check_user_open_shift(self):

    // here you can search already existing shift in open state for selected user and raise error if already exist.


 


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Thank You

Hello sir i want to use constrain on many2one field, the constrain should be different for each data of that many2one field.

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Try to add to the shift model like this:

from odoo.exceptions import UserError # in the import list
@api.multi
@api.constrains('state', 'user_id')
def _check_open_shifts(self):
user_ids = self.mapped("user_id") # assume that shift user field is called 'user_id'
for user in user_ids:
open_shifts = self.search([("state", "=", "open"), ("user_id", "=", user.id)], limit=2)
if len(open_shifts) > 1:
raise UserError("Only a single open shift is allowed per user")
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sorry but in this way we will prevent open 2 shifts whoever the user was, what i want is to prevent opening 2 shifts for the same user, i mean user a can have one open shift and user b can have one open shift etc but user a can't have 2 open shift at the same time

look at the updated answer

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Thank you very much, i appreciate your help

Найкраща відповідь

Hi,

You can check how the warning is shown in the attendance module. In it if the employee is checkd in once, on next checkin(without checkout)  and system will throw a warning message .


Thanks

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Thank you

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