good night and first my excuses for my English!!
after several research days I still do not succeed in solving a
probleme of billing of a graph generated with matplotlib and pil in
another view
to be more definite I have a view plot(request) which generates a
graph
canvas.draw ()
pil_image = PIL.Image.fromstring (' RGB ', canvas.get_width_height
(),
canvas.tostring_rgb ())
pil_image.save (buffer, ' PNG ')
plt.close ()
* Django' s HttpResponse reads the buffer and extracts the picture
response = HttpResponse (buffer.getvalue (), content_type ='image /
png ')
return response
if I call this view for an url: (r $' ^plot / image.png ', 'contact ')
which comes from a form where I put
<form action = "contact / image.png " name = " SForm " method =
"Post"> {% csrf_token %}
the graph is correctly displayed as picture in a page html
http: // 127.0.0.1:8000 / graphs / contact / image.png
If I pass by another view to show picture in a template Django,
I have an Internal Server Error 500 systematically by putting in the
template a simple tag <img src = "Image.png"> in the template
I tried everything in the second view: a simple to render
def show_graph (Request):
return render_to_response (' Graphs / affichage.html ',
context_instance=RequestContext (request))
I tried to remind of the function of view plo by returning the data
of the form
def show_graph (Request):
request.session = request. POST
session = SessionStore ()
session.save ()
response = contact (request)
return render_to_response (' Graphs / affichage.html ',
context_instance=RequestContext (request))
I always have the same error.
Is what anybody can see that I hurt and that causes this error?
Thank you in advance
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