mirror of https://github.com/snachodog/mybuddy.git
73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
# -*- coding: utf-8 -*-
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from django.utils import timezone
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from django.utils.translation import gettext as _
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import plotly.offline as plotly
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import plotly.graph_objs as go
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from reports import utils
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def pumping_amounts(objects):
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"""
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Create a graph showing pumping amounts over time.
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:param instances: a QuerySet of Pumping instances.
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:returns: a tuple of the the graph's html and javascript.
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"""
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objects = objects.order_by("start")
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# We need to find date totals for annotations at the end
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curr_date = ""
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date_totals = {}
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for object in objects:
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date_s = timezone.localtime(object.start)
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date_s = str(date_s.date())
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if curr_date != date_s:
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date_totals[date_s] = 0.0
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curr_date = date_s
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date_totals[date_s] += object.amount
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dates = [] # Single array for each bar
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amounts = [] # Array of arrays containing amounts
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index_x, index_y = 0, -1
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for object in objects:
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date_s = timezone.localtime(object.start)
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date_s = str(date_s.date())
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if date_s not in dates:
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dates.append(date_s)
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index_y += 1
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index_x = 0
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if len(amounts) == 0 or len(amounts) <= index_x:
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amounts.append([0] * len(date_totals.keys()))
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amounts[index_x][index_y] = object.amount
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index_x += 1
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traces = []
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for i in range(0, len(amounts)):
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traces.append(
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go.Bar(
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name="Amount",
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x=dates,
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y=amounts[i],
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text=amounts[i],
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hovertemplate=amounts[i],
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showlegend=False,
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)
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)
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layout_args = utils.default_graph_layout_options()
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layout_args["title"] = _("<b>Total Pumping Amount</b>")
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layout_args["xaxis"]["title"] = _("Date")
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layout_args["xaxis"]["rangeselector"] = utils.rangeselector_date()
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layout_args["yaxis"]["title"] = _("Pumping Amount")
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total_labels = [
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{"x": x, "y": total * 1.1, "text": str(total), "showarrow": False}
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for x, total in zip(list(dates), date_totals.values())
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]
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fig = go.Figure({"data": traces, "layout": go.Layout(**layout_args)})
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fig.update_layout(barmode="stack", annotations=total_labels)
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output = plotly.plot(fig, output_type="div", include_plotlyjs=False)
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return utils.split_graph_output(output)
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