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Monthly distribution of depreciation amount (#19493)

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* feat: allow monthly distribution of depreciation amount

* chore: added comments

* fix: monthly depr was not starting from use date's month
This commit is contained in:
Saqib 2019-11-13 19:00:24 +05:30 committed by Nabin Hait
parent 94565d69d1
commit 3e515e704d
2 changed files with 71 additions and 14 deletions
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13
erpnext/assets/doctype/asset/asset.json
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@ -33,6 +33,7 @@
"available_for_use_date",
"column_break_18",
"calculate_depreciation",
"allow_monthly_depreciation",
"is_existing_asset",
"opening_accumulated_depreciation",
"number_of_depreciations_booked",
@ -216,8 +217,7 @@
{
"fieldname": "available_for_use_date",
"fieldtype": "Date",
"label": "Available-for-use Date",
"reqd": 1
"label": "Available-for-use Date"
},
{
"fieldname": "column_break_18",
@ -450,12 +450,19 @@
{
"fieldname": "dimension_col_break",
"fieldtype": "Column Break"
},
{
"default": "0",
"depends_on": "calculate_depreciation",
"fieldname": "allow_monthly_depreciation",
"fieldtype": "Check",
"label": "Allow Monthly Depreciation"
}
],
"idx": 72,
"image_field": "image",
"is_submittable": 1,
"modified": "2019-10-07 15:34:30.976208",
"modified": "2019-10-22 15:47:36.050828",
"modified_by": "Administrator",
"module": "Assets",
"name": "Asset",

58
erpnext/assets/doctype/asset/asset.py
View File

@ -6,7 +6,7 @@ from __future__ import unicode_literals
import frappe, erpnext, math, json
from frappe import _
from six import string_types
from frappe.utils import flt, add_months, cint, nowdate, getdate, today, date_diff, add_days
from frappe.utils import flt, add_months, cint, nowdate, getdate, today, date_diff, month_diff, add_days
from frappe.model.document import Document
from erpnext.assets.doctype.asset_category.asset_category import get_asset_category_account
from erpnext.assets.doctype.asset.depreciation \
@ -149,19 +149,31 @@ class Asset(AccountsController):
schedule_date = add_months(d.depreciation_start_date,
n * cint(d.frequency_of_depreciation))
# schedule date will be a year later from start date
# so monthly schedule date is calculated by removing 11 months from it
monthly_schedule_date = add_months(schedule_date, - d.frequency_of_depreciation + 1)
# For first row
if has_pro_rata and n==0:
depreciation_amount, days = get_pro_rata_amt(d, depreciation_amount,
depreciation_amount, days, months = get_pro_rata_amt(d, depreciation_amount,
self.available_for_use_date, d.depreciation_start_date)
# For first depr schedule date will be the start date
# so monthly schedule date is calculated by removing month difference between use date and start date
monthly_schedule_date = add_months(d.depreciation_start_date, - months + 1)
# For last row
elif has_pro_rata and n == cint(number_of_pending_depreciations) - 1:
to_date = add_months(self.available_for_use_date,
n * cint(d.frequency_of_depreciation))
depreciation_amount, days = get_pro_rata_amt(d,
depreciation_amount, days, months = get_pro_rata_amt(d,
depreciation_amount, schedule_date, to_date)
monthly_schedule_date = add_months(schedule_date, 1)
schedule_date = add_days(schedule_date, days)
last_schedule_date = schedule_date
if not depreciation_amount: continue
value_after_depreciation -= flt(depreciation_amount,
@ -175,6 +187,43 @@ class Asset(AccountsController):
skip_row = True
if depreciation_amount > 0:
# With monthly depreciation, each depreciation is divided by months remaining until next date
if self.allow_monthly_depreciation:
# month range is 1 to 12
# In pro rata case, for first and last depreciation, month range would be different
month_range = months \
if (has_pro_rata and n==0) or (has_pro_rata and n == cint(number_of_pending_depreciations) - 1) \
else d.frequency_of_depreciation
for r in range(month_range):
if (has_pro_rata and n == 0):
# For first entry of monthly depr
if r == 0:
days_until_first_depr = date_diff(monthly_schedule_date, self.available_for_use_date)
per_day_amt = depreciation_amount / days
depreciation_amount_for_current_month = per_day_amt * days_until_first_depr
depreciation_amount -= depreciation_amount_for_current_month
date = monthly_schedule_date
amount = depreciation_amount_for_current_month
else:
date = add_months(monthly_schedule_date, r)
amount = depreciation_amount / (month_range - 1)
elif (has_pro_rata and n == cint(number_of_pending_depreciations) - 1) and r == cint(month_range) - 1:
# For last entry of monthly depr
date = last_schedule_date
amount = depreciation_amount / month_range
else:
date = add_months(monthly_schedule_date, r)
amount = depreciation_amount / month_range
self.append("schedules", {
"schedule_date": date,
"depreciation_amount": amount,
"depreciation_method": d.depreciation_method,
"finance_book": d.finance_book,
"finance_book_id": d.idx
})
else:
self.append("schedules", {
"schedule_date": schedule_date,
"depreciation_amount": depreciation_amount,
@ -588,9 +637,10 @@ def is_cwip_accounting_enabled(company, asset_category=None):
def get_pro_rata_amt(row, depreciation_amount, from_date, to_date):
days = date_diff(to_date, from_date)
months = month_diff(to_date, from_date)
total_days = get_total_days(to_date, row.frequency_of_depreciation)
return (depreciation_amount * flt(days)) / flt(total_days), days
return (depreciation_amount * flt(days)) / flt(total_days), days, months
def get_total_days(date, frequency):
period_start_date = add_months(date,