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Separate data generation from plot production

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Gabriel Augendre 2022-04-27 20:53:09 +02:00
parent 883fc8e8f9
commit 212b0d9713
1 changed files with 33 additions and 25 deletions
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58
src/purchase/views/reports.py
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@ -49,13 +49,7 @@ class ReportsView(ProtectedViewsMixin, TemplateView):
return context return context
def get_products_plot(self, products: ProductQuerySet): def get_products_plot(self, products: ProductQuerySet):
labels = [] labels, sold, turnover = self.get_products_data_for_plot(products)
sold = []
turnover = []
for product in products:
labels.append(product.name)
sold.append(product.sold)
turnover.append(product.turnover / 100)
fig, ax1 = plt.subplots() fig, ax1 = plt.subplots()
color = "tab:orange" color = "tab:orange"
@ -75,7 +69,38 @@ class ReportsView(ProtectedViewsMixin, TemplateView):
image_data.seek(0) image_data.seek(0)
return image_data.getvalue() return image_data.getvalue()
def get_products_data_for_plot(self, products):
labels = []
sold = []
turnover = []
for product in products:
labels.append(product.name)
sold.append(product.sold)
turnover.append(product.turnover / 100)
return labels, sold, turnover
def by_hour_plot(self, baskets): def by_hour_plot(self, baskets):
counts, labels, turnovers = self.get_by_hour_data_for_plot(baskets)
fig, ax1 = plt.subplots()
hours_in_day = 24
color = "tab:orange"
ax1.bar(labels, counts, width=1 / hours_in_day, color=color)
ax1.tick_params(axis="x", rotation=15)
ax1.set_ylabel(_("Basket count by hour"), color=color)
color = "tab:blue"
ax2 = ax1.twinx()
ax2.bar(labels, turnovers, width=1 / (hours_in_day * 2), color=color)
ax2.set_ylabel(_("Turnover by hour"), color=color)
plt.gca().yaxis.set_major_formatter(ticker.FormatStrFormatter("%.2f€"))
fig.tight_layout()
image_data = StringIO()
fig.savefig(image_data, format="svg")
image_data.seek(0)
return image_data.getvalue()
def get_by_hour_data_for_plot(self, baskets):
current: datetime.datetime = baskets[0].created_at current: datetime.datetime = baskets[0].created_at
current = current.replace(minute=0, second=0, microsecond=0) current = current.replace(minute=0, second=0, microsecond=0)
end: datetime.datetime = baskets[-1].created_at end: datetime.datetime = baskets[-1].created_at
@ -99,21 +124,4 @@ class ReportsView(ProtectedViewsMixin, TemplateView):
counts.append(count) counts.append(count)
turnovers.append(turnover) turnovers.append(turnover)
current = end_slot current = end_slot
fig, ax1 = plt.subplots() return counts, labels, turnovers
hours_in_day = 24
color = "tab:orange"
ax1.bar(labels, counts, width=1 / hours_in_day, color=color)
ax1.tick_params(axis="x", rotation=15)
ax1.set_ylabel(_("Basket count by hour"), color=color)
color = "tab:blue"
ax2 = ax1.twinx()
ax2.bar(labels, turnovers, width=1 / (hours_in_day * 2), color=color)
ax2.set_ylabel(_("Turnover by hour"), color=color)
plt.gca().yaxis.set_major_formatter(ticker.FormatStrFormatter("%.2f€"))
fig.tight_layout()
image_data = StringIO()
fig.savefig(image_data, format="svg")
image_data.seek(0)
return image_data.getvalue()