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from ..flask_extend import Blueprint
from .expenses import calc_month_exp
from . import static_url
from ..model import Category
from pygal.style import DefaultStyle as Style
from pygal import Pie as _Pie
mod = Blueprint('svg', __name__)
Style.background = Style.plot_background = "rgba(255,0,0,0)"
def Pie(*args, **kwargs):
# does not work as functools.partial, because static_url would be called without request
return _Pie(*args,
style=Style,
js = [static_url('pygal/pygal.js', _external = True)],
legend_font_size = 24,
tooltip_font_size = 24,
value_font_size = 24,
margin = 0,
legend_at_bottom = True,
pretty_print = True,
**kwargs)
@mod.route("/month/<int(fixed_digits=4):year>/<int(fixed_digits=2):month>.svg")
def month(year, month):
exp = calc_month_exp(year, month)
pie = Pie()
expenses = {}
for c in exp.catexps:
expenses[c.cat.name] = float(c.expense)
for c in Category.query.order_by(Category.name).all():
pie.add(c.name, expenses.get(c.name, 0.0))
if not expenses:
pie.raw_series = []
pie.add("Empty", 0.1)
return pie.render_response()
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