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from ..flask_extend import Blueprint
from flask import request
import datetime, decimal
from sqlalchemy import sql, func
from ..model import db, Category, SingleExpense, CatExpense, MonthExpense
from ..forms import ExpenseForm
from ..utils import templated, redirect
mod = Blueprint('expenses', __name__)
def expense_form(obj=None):
form = ExpenseForm(obj=obj)
form.category.query = Category.query.order_by(Category.name)
return form
def calc_month_exp(year, month):
ssum = func.sum(SingleExpense.expense)
query = SingleExpense.of_month(month, year)
result = query.group_by(SingleExpense.category_id).\
values(SingleExpense.category_id, ssum)
exps = [CatExpense(Category.query.get(c), s, query.filter(SingleExpense.category_id == c)) for c,s in result]
return MonthExpense(datetime.date(year, month, 1), exps)
def pie_stuff(exp):
expenses = {}
for c in exp.catexps:
expenses[c.cat.name] = float(c.expense)
for c in Category.query.order_by(Category.name).all():
yield (c.name, expenses.get(c.name, 0.0))
def calc_month_and_pie(year, month):
exp = calc_month_exp(year,month)
pie = pie_stuff(exp)
return (exp, dict(pie))
@mod.app_template_filter()
def prev_date(exp):
if exp.date.month == 1:
return exp.date.replace(year = exp.date.year - 1, month = 12)
else:
return exp.date.replace(month = exp.date.month - 1)
@mod.app_template_filter()
def next_date(exp):
if exp.date.month == 12:
return exp.date.replace(year = exp.date.year + 1, month = 1)
else:
return exp.date.replace(month = exp.date.month + 1)
@mod.app_template_test("last_date")
def is_last(exp):
return exp.date >= datetime.date.today().replace(day = 1)
@mod.route("/<int(fixed_digits=4):year>/<int(fixed_digits=2):month>")
@templated(".show")
def show_date(year, month):
c = calc_month_exp(year, month)
return { 'exps' : [c] }
mod.add_url_rule("/<path:p>", endpoint = "show_date_str", build_only = True)
@mod.route("/")
@templated()
def show():
d = datetime.date.today()
first, pfirst = calc_month_and_pie(d.year, d.month)
if d.month == 1:
second, psecond = calc_month_and_pie(d.year - 1, 12)
else:
second, psecond = calc_month_and_pie(d.year, d.month - 1)
return { 'exps' : [first, second], 'pies': [pfirst, psecond] }
@mod.route("/edit/<int:id>", methods=("GET", "POST"))
@templated()
def edit(id):
exp = SingleExpense.get(id)
form = expense_form(exp)
if request.method == "POST":
if "deleteB" in request.form:
db.session.delete(exp)
elif form.validate(): # change
form.populate_obj(exp)
else:
return { 'form': form }
db.session.commit()
return redirect("index")
return { 'form': form }
@mod.route("/add/", methods=("GET", "POST"))
@templated()
def add():
form = expense_form()
if form.validate_on_submit():
exp = SingleExpense()
form.populate_obj(exp)
db.session.add(exp)
db.session.commit()
return redirect(".add")
return { 'form': form }
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