我想保存一個至少有一個字段的odoo表格應該是不同的，並且不會重複保存表格

Question

我已經創建了一個表格，我想要通過填寫所有信息，但條件是應該沒有任何重複條目在所有領域相同的條目，ATLEAST一個不同條目將工作..

這裏是我的代碼 -

class HRLeaveRules(models.Model): 
    _name = 'hr_leave_rules.leave_rules' 
    half_day_allowed = fields.Selection([ 
     ('yes',"Yes"), 
     ('no',"No")], 
     string="Half Day Allowed", required=True) 
    gender_specific = fields.Selection([ 
     ('all' ,"All"), 
     ('male',"Male"), 
     ('female',"Female")], 
     string="Gender Specific", required=True)  
    leaves_allowed_on_prorata_basis = fields.Selection([ 
     ('yes',"Yes"), 
     ('no',"No")], 
     string="Leaves allowed on pro rata basis", required=True) 
    leave_encashment = fields.Boolean(string="Leave Encashment", 
     required=True) 
    leave_encashment_for_maximum = fields.Integer(
     string = "Leave Encashment for maximum", required=True)  
    can_emp_club_leave = fields.Selection([ 
     ('yes',"Yes"), 
     ('no',"No")], 
     string="Can Employees Club this leave with any other leave", 
     required=True) 
    past_dated_leave_allowed = fields.Selection([ 
     ('yes',"Yes"), 
     ('no',"No")], 
     string="Past dated leave application allowed", required=True) 
    override_paid_leave_to_unpaid = fields.Selection([ 
     ('yes',"Yes"), 
     ('no',"No")], 
     string="Can managers override paid leaves to unpaid", required=True)  
    carry_frwrdng_leaves = fields.Boolean(string="Carry forwarding of leaves", 
     required=True) 
    maximum_accumulation_in_year = fields.Integer(string = "Maximum Accumulation in year", 
     required=True) 
    leave_encash_rest_leaves = fields.Selection([ 
     ('yes',"Yes"), 
     ('no',"No")], 
     string="Leave Encashment for Rest Leaves", required=True) 
    employee_id = fields.Many2one('hr.employee', string="Employee") 
    holiday_status_id = fields.Many2one("hr.holidays.status", 
     string="Leave Type", required=True) 
    department_id = fields.Many2one('hr.department', 
     related='employee_id.department_id', string='Department') 
    count_intervening_leaves = fields.Boolean(
     string="Count intervening holidays/weekly offs as leaves", 
     required=True) 
    count_intervening_leaves_back_date = fields.Boolean(
     string="Count intervening holidays/weekly offs as leaves if applying for back date", 
     required=True) 
    leaves_probation_period = fields.Boolean(string="Leaves allowed in probation period", 
     required=True) 
    max_con_leaves_month = fields.Boolean(string="Maximum consecutive leaves per month", 
     required=True) 
    leave_encashment_cycle = fields.Selection([ 
     ('annually',"Annually"), 
     ('super_annuation',"Super Annuation/Relieving")], 
     string="Leave Encashment Cycle", required=True) 
    description = fields.Text(string="Description") 

    @api.model 
    def create(self,value): 
     current = self.env['hr_leave_rules.leave_rules'].search([]) 
     for rec in current: 
      if value.has_key("holiday_status_id"): 
       if rec.holiday_status_id.id == value["holiday_status_id"] and rec.holiday_status_id: 
        if value.has_key("gender_specific"): 
         if rec.gender_specific == value["gender_specific"] and rec.gender_specific:     
          if value.has_key("half_day_allowed"): 
           if rec.half_day_allowed == value["half_day_allowed"] and rec.half_day_allowed:     
            if value.has_key("leaves_allowed_on_prorata_basis"): 
             if rec.leaves_allowed_on_prorata_basis == value["leaves_allowed_on_prorata_basis"] and rec.leaves_allowed_on_prorata_basis:     
              if value.has_key("leave_encashment_cycle"): 
               if rec.leave_encashment_cycle == value["leave_encashment_cycle"] and rec.leave_encashment_cycle: 
                if value.has_key("leave_encash_rest_leaves"): 
                 if rec.leave_encash_rest_leaves == value["leave_encash_rest_leaves"] and rec.leave_encash_rest_leaves:             
                  if value.has_key("can_emp_club_leave"): 
                   if rec.can_emp_club_leave == value["can_emp_club_leave"] and rec.can_emp_club_leave: 
                    if value.has_key("past_dated_leave_allowed"): 
                     if rec.past_dated_leave_allowed == value["past_dated_leave_allowed"] and rec.past_dated_leave_allowed: 
                      if value.has_key("override_paid_leave_to_unpaid"): 
                       if rec.override_paid_leave_to_unpaid == value["override_paid_leave_to_unpaid"] and rec.override_paid_leave_to_unpaid: 
                        raise UserError(_('This type of leave already exist in the leave rules !')) 

ç ondition因爲沒有重複的條目工作正常，但獨特的形式不保存信息

的錯誤是 - 如何使用SQL約束

AttributeError: 'NoneType' object has no attribute 'id'

Answer 1

什麼：

class MyModel(models.Model): 
    _name = "my.model" 

    field1 = fields.Char() 
    field2 = fields.Char() 
    field3 = fields.Char() 

    _sql_constraints = [ 
     ('unique_my_model', 'unique(field1, field2, field3)', 
     'Combination of all fields have to be unique!') 
    ]