Files
ihrm/leave/models.py

850 lines
31 KiB
Python

import calendar
from collections.abc import Iterable
from datetime import datetime, timedelta
import math
import operator
import sys
from django.db.models import Q
from django.db import models
from django.utils import timezone
from django.core.exceptions import ValidationError
from dateutil.relativedelta import relativedelta
from django.utils.translation import gettext_lazy as _
from base import thread_local_middleware
from base.models import Company, MultipleApprovalCondition, clear_messages
from base.horilla_company_manager import HorillaCompanyManager
from employee.models import Employee
from horilla.models import HorillaModel
from horilla_audit.models import HorillaAuditInfo, HorillaAuditLog
from .methods import calculate_requested_days
from django.core.files.storage import default_storage
from django.conf import settings
from horilla_audit.methods import get_diff
from django.contrib import messages
operator_mapping = {
"equal": operator.eq,
"notequal": operator.ne,
"lt": operator.lt,
"gt": operator.gt,
"le": operator.le,
"ge": operator.ge,
"icontains": operator.contains,
}
# Create your models here.
BREAKDOWN = [
("full_day", _("Full Day")),
("first_half", _("First Half")),
("second_half", _("Second Half")),
]
CHOICES = [("yes", "Yes"), ("no", "No")]
RESET_BASED = [
("yearly", _("Yearly")),
("monthly", _("Monthly")),
("weekly", _("Weekly")),
]
MONTHS = [
("1", _("Jan")),
("2", _("Feb")),
("3", _("Mar")),
("4", _("Apr")),
("5", _("May")),
("6", _("Jun")),
("7", _("Jul")),
("8", _("Aug")),
("9", _("Sep")),
("10", _("Oct")),
("11", _("Nov")),
("12", _("Dec")),
]
DAYS = [
("last day", _("Last Day")),
("1", "1st"),
("2", "2nd"),
("3", "3rd"),
("4", "4th"),
("5", "5th"),
("6", "6th"),
("7", "7th"),
("8", "8th"),
("9", "9th"),
("10", "10th"),
("11", "11th"),
("12", "12th"),
("13", "13th"),
("14", "14th"),
("15", "15th"),
("16", "16th"),
("17", "17th"),
("18", "18th"),
("19", "19th"),
("20", "20th"),
("21", "21th"),
("22", "22th"),
("23", "23th"),
("24", "24th"),
("25", "25th"),
("26", "26th"),
("27", "27th"),
("28", "28th"),
("29", "29th"),
("30", "30th"),
("31", "31th"),
]
TIME_PERIOD = [("day", _("Day")), ("month", _("Month")), ("year", _("Year"))]
PAYMENT = [("paid", _("Paid")), ("unpaid", _("Unpaid"))]
CARRYFORWARD_TYPE = [
("no carryforward", _("No Carry Forward")),
("carryforward", _("Carry Forward")),
("carryforward expire", _("Carry Forward with Expire")),
]
ACCRUAL_PLAN = [("job_position", _("Job Position")), ("job_role", _("Job Role"))]
LEAVE_STATUS = (
("requested", _("Requested")),
("approved", _("Approved")),
("cancelled", _("Cancelled")),
("rejected", _("Rejected")),
)
LEAVE_ALLOCATION_STATUS = (
("requested", _("Requested")),
("approved", _("Approved")),
("rejected", _("Rejected")),
)
WEEKS = [
("0", _("First Week")),
("1", _("Second Week")),
("2", _("Third Week")),
("3", _("Fourth Week")),
("4", _("Fifth Week")),
]
WEEK_DAYS = [
("0", _("Monday")),
("1", _("Tuesday")),
("2", _("Wednesday")),
("3", _("Thursday")),
("4", _("Friday")),
("5", _("Saturday")),
("6", _("Sunday")),
]
class LeaveType(HorillaModel):
icon = models.ImageField(null=True, blank=True, upload_to="leave/leave_icon")
name = models.CharField(max_length=30, null=False)
color = models.CharField(null=True, max_length=30)
payment = models.CharField(max_length=30, choices=PAYMENT, default="unpaid")
count = models.IntegerField(null=True, default=1)
period_in = models.CharField(max_length=30, choices=TIME_PERIOD, default="day")
total_days = models.IntegerField(null=True, default=1)
reset = models.BooleanField(default=False)
is_encashable = models.BooleanField(default=False,verbose_name=_("Is encashable"))
reset_based = models.CharField(
max_length=30,
choices=RESET_BASED,
blank=True,
null=True,
)
reset_month = models.CharField(max_length=30, choices=MONTHS, blank=True)
reset_day = models.CharField(max_length=30, choices=DAYS, null=True, blank=True)
reset_weekend = models.CharField(
max_length=10, null=True, blank=True, choices=WEEK_DAYS
)
carryforward_type = models.CharField(
max_length=30, choices=CARRYFORWARD_TYPE, default="no carryforward"
)
carryforward_max = models.FloatField(null=True, blank=True)
carryforward_expire_in = models.IntegerField(null=True, blank=True)
carryforward_expire_period = models.CharField(
max_length=30, choices=TIME_PERIOD, null=True, blank=True
)
require_approval = models.CharField(
max_length=30, choices=CHOICES, null=True, blank=True, default="yes"
)
require_attachment = models.CharField(
max_length=30,
choices=CHOICES,
default="no",
null=True,
blank=True,
verbose_name=_("Require Attachment"),
)
exclude_company_leave = models.CharField(
max_length=30, choices=CHOICES, default="no"
)
exclude_holiday = models.CharField(max_length=30, choices=CHOICES, default="no")
company_id = models.ForeignKey(
Company, null=True, editable=False, on_delete=models.PROTECT
)
objects = HorillaCompanyManager(related_company_field="company_id")
class Meta:
ordering = ["-id"]
def get_avatar(self):
"""
Method will retun the api to the avatar or path to the profile image
"""
url = f"https://ui-avatars.com/api/?name={self.name}&background=random"
if self.icon:
full_filename = settings.MEDIA_ROOT + self.icon.name
if default_storage.exists(full_filename):
url = self.icon.url
return url
def save(self, *args, **kwargs):
if (
self.carryforward_type != "no carryforward"
and self.carryforward_max is None
):
self.carryforward_max = math.inf
super().save(*args, **kwargs)
def __str__(self):
return self.name
class Holiday(HorillaModel):
name = models.CharField(max_length=30, null=False, verbose_name=_("Name"))
start_date = models.DateField(verbose_name=_("Start Date"))
end_date = models.DateField(null=True, blank=True, verbose_name=_("End Date"))
recurring = models.BooleanField(default=False, verbose_name=_("Recurring"))
company_id = models.ForeignKey(
Company, null=True, editable=False, on_delete=models.PROTECT
)
objects = HorillaCompanyManager(related_company_field="company_id")
def __str__(self):
return self.name
class CompanyLeave(HorillaModel):
based_on_week = models.CharField(
max_length=100, choices=WEEKS, blank=True, null=True
)
based_on_week_day = models.CharField(max_length=100, choices=WEEK_DAYS)
company_id = models.ForeignKey(
Company, null=True, editable=False, on_delete=models.PROTECT
)
objects = HorillaCompanyManager(related_company_field="company_id")
class Meta:
unique_together = ("based_on_week", "based_on_week_day")
def __str__(self):
return f"{dict(WEEK_DAYS).get(self.based_on_week_day)} | {dict(WEEKS).get(self.based_on_week)}"
class AvailableLeave(HorillaModel):
employee_id = models.ForeignKey(
Employee,
on_delete=models.CASCADE,
related_name="available_leave",
verbose_name=_("Employee"),
)
leave_type_id = models.ForeignKey(
LeaveType,
on_delete=models.PROTECT,
related_name="employee_available_leave",
blank=True,
null=True,
verbose_name=_("Leave type"),
)
available_days = models.FloatField(default=0, verbose_name=_("Available Days"))
carryforward_days = models.FloatField(
default=0, verbose_name=_("Carryforward Days")
)
total_leave_days = models.FloatField(default=0, verbose_name=_("Total Leave Days"))
assigned_date = models.DateField(
default=timezone.now, verbose_name=_("Assigned Date")
)
reset_date = models.DateField(
blank=True, null=True, verbose_name=_("Leave Reset Date")
)
expired_date = models.DateField(
blank=True, null=True, verbose_name=_("CarryForward Expired Date")
)
objects = HorillaCompanyManager(
related_company_field="employee_id__employee_work_info__company_id"
)
history = HorillaAuditLog(
related_name="history_set",
bases=[
HorillaAuditInfo,
],
)
class Meta:
unique_together = ("leave_type_id", "employee_id")
def __str__(self):
return f"{self.employee_id} | {self.leave_type_id}"
def forcasted_leaves(self):
forecasted_leave = {}
if self.leave_type_id.reset_based == "monthly":
today = datetime.now()
for i in range(1, 7): # Calculate for the next 6 months
next_month = today + relativedelta(months=i)
if self.leave_type_id.carryforward_max:
forecasted_leave[next_month.strftime("%Y-%m")] = (
self.available_days
+ min(
self.leave_type_id.carryforward_max,
(self.leave_type_id.total_days * i),
)
)
else:
forecasted_leave[next_month.strftime("%Y-%m")] = (
self.available_days + (self.leave_type_id.total_days * i)
)
return forecasted_leave
# Resetting carryforward days
def update_carryforward(self):
if self.leave_type_id.carryforward_type != "no carryforward":
if self.leave_type_id.carryforward_max >= self.total_leave_days:
self.carryforward_days = self.total_leave_days
else:
self.carryforward_days = self.leave_type_id.carryforward_max
self.available_days = self.leave_type_id.total_days
# Setting the reset date for carryforward leaves
def set_reset_date(self, assigned_date, available_leave):
if available_leave.leave_type_id.reset_based == "monthly":
reset_day = available_leave.leave_type_id.reset_day
if reset_day == "last day":
temp_date = assigned_date + relativedelta(months=0, day=31)
if assigned_date < temp_date:
reset_date = temp_date
else:
reset_date = assigned_date + relativedelta(months=1, day=31)
else:
temp_date = assigned_date + relativedelta(months=0, day=int(reset_day))
if assigned_date < temp_date:
reset_date = temp_date
else:
reset_date = assigned_date + relativedelta(
months=1, day=int(reset_day)
)
elif available_leave.leave_type_id.reset_based == "weekly":
temp = 7 - (
assigned_date.isoweekday()
- int(available_leave.leave_type_id.reset_weekend)
- 1
)
if temp != 7:
reset_date = assigned_date + relativedelta(days=(temp % 7))
else:
reset_date = assigned_date + relativedelta(days=7)
else:
reset_month = int(available_leave.leave_type_id.reset_month)
reset_day = available_leave.leave_type_id.reset_day
if reset_day == "last day":
temp_date = assigned_date + relativedelta(
years=0, month=reset_month, day=31
)
if assigned_date < temp_date:
reset_date = temp_date
else:
reset_date = assigned_date + relativedelta(
years=1, month=reset_month, day=31
)
else:
temp_date = assigned_date + relativedelta(
years=0, month=reset_month, day=int(reset_day)
)
if assigned_date < temp_date:
reset_date = temp_date
else:
# nth_day = int(reset_day)
reset_date = assigned_date + relativedelta(
years=1, month=reset_month, day=int(reset_day)
)
return reset_date
# Setting the expiration date for carryforward leaves
def set_expired_date(self, available_leave, assigned_date):
period = available_leave.leave_type_id.carryforward_expire_in
if available_leave.leave_type_id.carryforward_expire_period == "day":
expired_date = assigned_date + relativedelta(days=period)
elif available_leave.leave_type_id.carryforward_expire_period == "month":
expired_date = assigned_date + relativedelta(months=period)
else:
expired_date = assigned_date + relativedelta(years=period)
available_leave.carryforward_days = 0
available_leave.available_days = available_leave.leave_type_id.total_days
return expired_date
def save(self, *args, **kwargs):
# if self.assigned_date == datetime.now().date() or self.assigned_date.date() == datetime.now().date():
if self.reset_date is None:
# Check whether the reset is enabled
if self.leave_type_id.reset:
reset_date = self.set_reset_date(
assigned_date=self.assigned_date, available_leave=self
)
self.reset_date = reset_date
# assigning expire date
if self.leave_type_id.carryforward_type == "carryforward expire":
expired_date = self.set_expired_date(
assigned_date=self.assigned_date, available_leave=self
)
self.expired_date = expired_date
self.total_leave_days = max(self.available_days + self.carryforward_days, 0)
self.carryforward_days = max(self.carryforward_days, 0)
super().save(*args, **kwargs)
class LeaveRequest(HorillaModel):
employee_id = models.ForeignKey(
Employee, on_delete=models.CASCADE, verbose_name=_("Employee")
)
leave_type_id = models.ForeignKey(
LeaveType, on_delete=models.PROTECT, verbose_name=_("Leave Type")
)
start_date = models.DateField(null=False, verbose_name=_("Start Date"))
start_date_breakdown = models.CharField(
max_length=30,
choices=BREAKDOWN,
default="full_day",
verbose_name=_("Start Date Breakdown"),
)
end_date = models.DateField(null=True, blank=True, verbose_name=_("End Date"))
end_date_breakdown = models.CharField(
max_length=30,
choices=BREAKDOWN,
default="full_day",
verbose_name=_("End Date Breakdown"),
)
requested_days = models.FloatField(
blank=True, null=True, verbose_name=_("Requested Days")
)
leave_clashes_count = models.IntegerField(default=0, verbose_name=_("Leave Clashes Count"))
description = models.TextField(verbose_name=_("Description"), max_length=255)
attachment = models.FileField(
null=True,
blank=True,
upload_to="leave/leave_attachment",
verbose_name=_("Attachment"),
)
status = models.CharField(
max_length=30,
choices=LEAVE_STATUS,
default="requested",
verbose_name=_("Status"),
)
requested_date = models.DateField(
default=timezone.now, verbose_name=_("Created Date")
)
approved_available_days = models.FloatField(default=0)
approved_carryforward_days = models.FloatField(default=0)
reject_reason = models.TextField(
blank=True, verbose_name=_("Reject Reason"), max_length=255
)
history = HorillaAuditLog(
related_name="history_set",
bases=[
HorillaAuditInfo,
],
)
created_by = models.ForeignKey(
Employee,
on_delete=models.PROTECT,
blank=True,
null=True,
related_name="leave_request_created",
verbose_name=_("Created By"),
)
objects = HorillaCompanyManager(
related_company_field="employee_id__employee_work_info__company_id"
)
def tracking(self):
return get_diff(self)
def __str__(self):
return f"{self.employee_id} | {self.leave_type_id} | {self.status}"
def get_penalties_count(self):
"""
This method is used to return the total penalties in the late early instance
"""
return self.penaltyaccount_set.count()
def requested_dates(self):
"""
:return: this functions returns a list of dates from start date to end date.
"""
request_start_date = self.start_date
request_end_date = self.end_date
if request_end_date is None:
request_end_date = self.start_date
requested_days = request_end_date - request_start_date
requested_dates = []
for i in range(requested_days.days + 1):
date = request_start_date + timedelta(i)
requested_dates.append(date)
return requested_dates
def holiday_dates(self):
"""
:return: this functions returns a list of all holiday dates.
"""
holiday_dates = []
holidays = Holiday.objects.all()
for holiday in holidays:
holiday_start_date = holiday.start_date
holiday_end_date = holiday.end_date
if holiday_end_date is None:
holiday_end_date = holiday_start_date
holiday_days = holiday_end_date - holiday_start_date
for i in range(holiday_days.days + 1):
date = holiday_start_date + timedelta(i)
holiday_dates.append(date)
return holiday_dates
def company_leave_dates(self):
"""
:return: This function returns a list of all company leave dates"""
company_leaves = CompanyLeave.objects.all()
company_leave_dates = []
for company_leave in company_leaves:
year = self.start_date.year
based_on_week = company_leave.based_on_week
based_on_week_day = company_leave.based_on_week_day
for month in range(1, 13):
if based_on_week != None:
# Set Sunday as the first day of the week
calendar.setfirstweekday(6)
month_calendar = calendar.monthcalendar(year, month)
weeks = month_calendar[int(based_on_week)]
weekdays_in_weeks = [day for day in weeks if day != 0]
for day in weekdays_in_weeks:
date = datetime.strptime(
f"{year}-{month:02}-{day:02}", "%Y-%m-%d"
).date()
if (
date.weekday() == int(based_on_week_day)
and date not in company_leave_dates
):
company_leave_dates.append(date)
else:
# Set Monday as the first day of the week
calendar.setfirstweekday(0)
month_calendar = calendar.monthcalendar(year, month)
for week in month_calendar:
if week[int(based_on_week_day)] != 0:
date = datetime.strptime(
f"{year}-{month:02}-{week[int(based_on_week_day)]:02}",
"%Y-%m-%d",
).date()
if date not in company_leave_dates:
company_leave_dates.append(date)
return company_leave_dates
def save(self, *args, **kwargs):
self.requested_days = calculate_requested_days(
self.start_date,
self.end_date,
self.start_date_breakdown,
self.end_date_breakdown,
)
if (
self.leave_type_id.exclude_company_leave == "yes"
and self.leave_type_id.exclude_holiday == "yes"
):
self.exclude_all_leaves()
else:
self.exclude_leaves()
self.leave_clashes_count = self.count_leave_clashes()
self.update_leave_clashes_count()
super().save(*args, **kwargs)
department_id = self.employee_id.employee_work_info.department_id
requested_days = self.requested_days
applicable_condition = False
conditions = MultipleApprovalCondition.objects.filter(
department=department_id
).order_by("condition_value")
if conditions:
for condition in conditions:
operator = condition.condition_operator
if operator == "range":
start_value = float(condition.condition_start_value)
end_value = float(condition.condition_end_value)
if start_value <= requested_days <= end_value:
applicable_condition = condition
break
else:
operator_func = operator_mapping.get(condition.condition_operator)
condition_value = type(requested_days)(condition.condition_value)
if operator_func(requested_days, condition_value):
applicable_condition = condition
break
if applicable_condition and self.status == "requested":
LeaveRequestConditionApproval.objects.filter(leave_request_id=self).delete()
sequence = 0
managers = applicable_condition.approval_managers()
for manager in managers:
sequence += 1
LeaveRequestConditionApproval.objects.create(
sequence=sequence,
leave_request_id=self,
manager_id=manager,
)
def exclude_all_leaves(self):
requested_dates = self.requested_dates()
holiday_dates = self.holiday_dates()
company_leave_dates = self.company_leave_dates()
total_leaves = list(set(holiday_dates + company_leave_dates))
total_leave_count = sum(
requested_date in total_leaves for requested_date in requested_dates
)
self.requested_days = self.requested_days - total_leave_count
def exclude_leaves(self):
holiday_count = 0
if self.leave_type_id.exclude_holiday == "yes":
requested_dates = self.requested_dates()
holiday_dates = self.holiday_dates()
for requested_date in requested_dates:
if requested_date in holiday_dates:
holiday_count += 1
self.requested_days = self.requested_days - holiday_count
if self.leave_type_id.exclude_company_leave == "yes":
requested_dates = self.requested_dates()
company_leave_dates = self.company_leave_dates()
company_leave_count = sum(
requested_date in company_leave_dates
for requested_date in requested_dates
)
self.requested_days = self.requested_days - company_leave_count
def no_approval(self):
employee_id = self.employee_id
leave_type_id = self.leave_type_id
available_leave = AvailableLeave.objects.get(
leave_type_id=leave_type_id, employee_id=employee_id
)
if self.requested_days > available_leave.available_days:
leave = self.requested_days - available_leave.available_days
self.approved_available_days = available_leave.available_days
available_leave.available_days = 0
available_leave.carryforward_days = (
available_leave.carryforward_days - leave
)
self.approved_carryforward_days = leave
else:
available_leave.available_days = (
available_leave.available_days - self.requested_days
)
self.approved_available_days = self.requested_days
self.status = "approved"
available_leave.save()
def multiple_approvals(self, *args, **kwargs):
approvals = LeaveRequestConditionApproval.objects.filter(leave_request_id=self)
requested_query = approvals.filter(is_approved=False).order_by("sequence")
approved_query = approvals.filter(is_approved=True).order_by("sequence")
managers = []
for manager in approvals:
managers.append(manager.manager_id)
if approvals.exists():
result = {
"managers": managers,
"approved": approved_query,
"requested": requested_query,
"approvals": approvals,
}
else:
result = False
return result
def is_approved(self):
request = getattr(thread_local_middleware._thread_locals, "request", None)
if request:
employee = Employee.objects.filter(employee_user_id=request.user).first()
condition_approval = LeaveRequestConditionApproval.objects.filter(
leave_request_id=self, manager_id=employee.id
).first()
if condition_approval:
return not condition_approval.is_approved
else:
return True
def delete(self, *args, **kwargs):
request = getattr(thread_local_middleware._thread_locals, "request", None)
leave_requests_to_update = LeaveRequest.objects.all().exclude(id=self.id)
if self.status == "requested":
"""
Override the delete method to update the leave clashes count of related leave requests.
"""
super().delete(*args, **kwargs)
for leave_request in leave_requests_to_update:
leave_request.leave_clashes_count = leave_request.count_leave_clashes()
leave_request.save()
else:
if request:
clear_messages(request)
messages.warning(request, "The leave request cannot be deleted.")
def update_leave_clashes_count(self):
"""
Update the leave clashes count for all leave requests.
"""
leave_requests_to_update = LeaveRequest.objects.all().exclude(id=self.id)
for leave_request in leave_requests_to_update:
leave_request.leave_clashes_count = leave_request.count_leave_clashes()
# Bulk update leave clashes count for all leave requests
LeaveRequest.objects.bulk_update(leave_requests_to_update, ['leave_clashes_count'])
def count_leave_clashes(self):
"""
Method to count leave clashes where this employee's leave request overlaps
with other employees' requested dates.
"""
overlapping_requests = LeaveRequest.objects.exclude(id=self.id).filter(
Q(employee_id__employee_work_info__department_id=self.employee_id.employee_work_info.department_id) |
Q(employee_id__employee_work_info__job_position_id=self.employee_id.employee_work_info.job_position_id),
start_date__lte=self.end_date,
end_date__gte=self.start_date,
)
return overlapping_requests.count()
class LeaverequestFile(models.Model):
file = models.FileField(upload_to="leave/request_files")
class LeaverequestComment(HorillaModel):
"""
LeaverequestComment Model
"""
request_id = models.ForeignKey(LeaveRequest, on_delete=models.CASCADE)
employee_id = models.ForeignKey(Employee, on_delete=models.CASCADE)
files = models.ManyToManyField(LeaverequestFile, blank=True)
comment = models.TextField(null=True, verbose_name=_("Comment"), max_length=255)
def __str__(self) -> str:
return f"{self.comment}"
class LeaveAllocationRequest(models.Model):
leave_type_id = models.ForeignKey(
LeaveType, on_delete=models.PROTECT, verbose_name="Leave type"
)
employee_id = models.ForeignKey(
Employee, on_delete=models.CASCADE, verbose_name="Employee"
)
requested_days = models.FloatField(blank=True, null=True)
requested_date = models.DateField(default=timezone.now)
created_by = models.ForeignKey(
Employee,
on_delete=models.PROTECT,
blank=True,
null=True,
related_name="leave_allocation_request_created",
)
description = models.TextField(max_length=255)
attachment = models.FileField(
null=True, blank=True, upload_to="leave/leave_attachment"
)
status = models.CharField(
max_length=30, choices=LEAVE_ALLOCATION_STATUS, default="requested"
)
created_at = models.DateTimeField(auto_now="True")
reject_reason = models.TextField(blank=True, max_length=255)
history = HorillaAuditLog(
related_name="history_set",
bases=[
HorillaAuditInfo,
],
)
objects = HorillaCompanyManager(
related_company_field="employee_id__employee_work_info__company_id"
)
def __str__(self):
return f"{self.employee_id}| {self.leave_type_id}| {self.id}"
def save(self, *args, **kwargs):
super().save(*args, **kwargs)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.skip_history = False
def tracking(self):
return get_diff(self)
def allocate_tracking(self):
"""
This method is used to return the tracked history of the instance
"""
try:
histories = get_diff(self)[:2]
for history in histories:
if history["type"] == "Changes":
for update in history["changes"]:
if update["field_name"] == "requested_days":
return update
except:
return None
class LeaveallocationrequestComment(HorillaModel):
"""
LeaveallocationrequestComment Model
"""
request_id = models.ForeignKey(LeaveAllocationRequest, on_delete=models.CASCADE)
employee_id = models.ForeignKey(Employee, on_delete=models.CASCADE)
files = models.ManyToManyField(LeaverequestFile, blank=True)
comment = models.TextField(null=True, verbose_name=_("Comment"), max_length=255)
def __str__(self) -> str:
return f"{self.comment}"
class LeaveRequestConditionApproval(models.Model):
sequence = models.IntegerField()
is_approved = models.BooleanField(default=False)
is_rejected = models.BooleanField(default=False)
leave_request_id = models.ForeignKey(LeaveRequest, on_delete=models.CASCADE)
manager_id = models.ForeignKey(Employee, on_delete=models.CASCADE)