| 16 |
16 |
|
| 17 |
17 |
from django.core.exceptions import PermissionDenied
|
| 18 |
18 |
from django.http import Http404, HttpResponse
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|
19 |
from django.shortcuts import render
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| 19 |
20 |
from django.utils.translation import ugettext_lazy as _
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|
21 |
from django.views.generic import DetailView
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| 20 |
22 |
from requests.exceptions import HTTPError
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| 21 |
23 |
|
| 22 |
24 |
from combo.utils import get_templated_url, requests
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| ... | ... | |
| 30 |
32 |
return HttpResponse(response.content, content_type='text/json')
|
| 31 |
33 |
|
| 32 |
34 |
|
| 33 |
|
def dataviz_graph(request, *args, **kwargs):
|
| 34 |
|
cell = ChartNgCell.objects.get(id=kwargs.get('cell'))
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| 35 |
|
if not cell.page.is_visible(request.user):
|
| 36 |
|
raise PermissionDenied()
|
| 37 |
|
if not cell.is_visible(user=request.user):
|
| 38 |
|
raise PermissionDenied()
|
| 39 |
|
if not cell.statistic or not cell.statistic.url:
|
| 40 |
|
raise Http404('misconfigured cell')
|
| 41 |
|
error_text = None
|
| 42 |
|
try:
|
| 43 |
|
chart = cell.get_chart(
|
| 44 |
|
width=int(request.GET['width']) if request.GET.get('width') else None,
|
| 45 |
|
height=int(request.GET['height']) if request.GET.get('height') else int(cell.height),
|
| 46 |
|
)
|
| 47 |
|
except UnsupportedDataSet:
|
| 48 |
|
error_text = _('Unsupported dataset.')
|
| 49 |
|
except HTTPError as e:
|
| 50 |
|
if e.response.status_code == 404:
|
| 51 |
|
error_text = _('Visualization not found.')
|
| 52 |
|
else:
|
| 53 |
|
error_text = _('Unknown HTTP error: %s' % e)
|
|
35 |
class DatavizGraphView(DetailView):
|
|
36 |
model = ChartNgCell
|
|
37 |
pk_url_kwarg = 'cell'
|
| 54 |
38 |
|
| 55 |
|
if error_text:
|
| 56 |
|
svg = """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
| 57 |
|
<svg xmlns="http://www.w3.org/2000/svg" version="1.1"
|
| 58 |
|
viewBox="0 0 %(width)s 30" width="%(width)s" height="30">
|
| 59 |
|
<text
|
| 60 |
|
y="20"
|
| 61 |
|
x="10"
|
| 62 |
|
style="font-family: sans-serif; font-size: 16px; fill:#000000;">%(text)s</text>
|
| 63 |
|
</svg>""" % {
|
| 64 |
|
'width': request.GET.get('width', 200),
|
|
39 |
def dispatch(self, request, *args, **kwargs):
|
|
40 |
self.cell = self.get_object()
|
|
41 |
|
|
42 |
if not self.cell.page.is_visible(request.user):
|
|
43 |
raise PermissionDenied()
|
|
44 |
if not self.cell.is_visible(user=request.user):
|
|
45 |
raise PermissionDenied()
|
|
46 |
if not self.cell.statistic or not self.cell.statistic.url:
|
|
47 |
raise Http404('misconfigured cell')
|
|
48 |
|
|
49 |
return super().dispatch(request, *args, **kwargs)
|
|
50 |
|
|
51 |
def get(self, request, *args, **kwargs):
|
|
52 |
try:
|
|
53 |
chart = self.cell.get_chart(
|
|
54 |
width=int(request.GET['width']) if request.GET.get('width') else None,
|
|
55 |
height=int(request.GET['height']) if request.GET.get('height') else int(self.cell.height),
|
|
56 |
)
|
|
57 |
except UnsupportedDataSet:
|
|
58 |
return self.svg_error(_('Unsupported dataset.'))
|
|
59 |
except HTTPError as e:
|
|
60 |
if e.response.status_code == 404:
|
|
61 |
return self.svg_error(_('Visualization not found.'))
|
|
62 |
else:
|
|
63 |
return self.svg_error(_('Unknown HTTP error: %s' % e))
|
|
64 |
|
|
65 |
return HttpResponse(chart.render(), content_type='image/svg+xml')
|
|
66 |
|
|
67 |
def svg_error(self, error_text):
|
|
68 |
context = {
|
|
69 |
'width': self.request.GET.get('width', 200),
|
| 65 |
70 |
'text': error_text,
|
| 66 |
71 |
}
|
| 67 |
|
else:
|
| 68 |
|
svg = chart.render()
|
| 69 |
|
return HttpResponse(svg, content_type='image/svg+xml')
|
|
72 |
return render(self.request, 'combo/dataviz-error.svg', context=context, content_type='image/svg+xml')
|
|
73 |
|
|
74 |
|
|
75 |
dataviz_graph = DatavizGraphView.as_view()
|
| 70 |
|
-
|