mybuddy/reports/graphs/diaperchange_amounts.py

44 lines
1.4 KiB
Python

# -*- coding: utf-8 -*-
from django.utils import timezone
from django.utils.translation import gettext as _
import plotly.offline as plotly
import plotly.graph_objs as go
from reports import utils
def diaperchange_amounts(instances):
"""
Create a graph showing daily diaper change amounts over time.
:param instances: a QuerySet of DiaperChange instances.
:returns: a tuple of the graph's html and javascript.
"""
totals = {}
for instance in instances:
time_local = timezone.localtime(instance.time)
date = time_local.date()
if date not in totals.keys():
totals[date] = 0
totals[date] += instance.amount or 0
amounts = [round(amount, 2) for amount in totals.values()]
trace = go.Bar(
name=_("Diaper change amount"),
x=list(totals.keys()),
y=amounts,
hoverinfo="text",
textposition="outside",
text=amounts,
)
layout_args = utils.default_graph_layout_options()
layout_args["title"] = _("<b>Diaper Change Amounts</b>")
layout_args["xaxis"]["title"] = _("Date")
layout_args["xaxis"]["rangeselector"] = utils.rangeselector_date()
layout_args["yaxis"]["title"] = _("Change amount")
fig = go.Figure({"data": [trace], "layout": go.Layout(**layout_args)})
output = plotly.plot(fig, output_type="div", include_plotlyjs=False)
return utils.split_graph_output(output)