所以我有2个视图:第一个视图根据请求生成html,第二个视图生成要显示第一个视图的图表。
HTML查看
def activation_signupcount(request):
if 'datestart' not in request.GET:
return render_to_response('activation/activation_signupcount.html', {'datestart':''})
else:
datestart = request.GET['datestart']
dateend = request.GET['dateend']
return render_to_response('activation/activation_signupcount.html', {'datestart':datestart, 'dateend':dateend})#
CHART VIEW
def activation_signupcount_graph(request):
datestart = request.GET['datestart'] #this doesnt work
dateend = request.GET['dateend'] #this doesnt work
print datestart,dateend
# open sql connection
cursor = connection.cursor()
# execute query
cursor.execute("SELECT COUNT(1), JoinDate FROM users WHERE JoinDate BETWEEN '"+ datestart +"' AND '"+ dateend +"' GROUP BY JoinDate;")
# close connection
data = cursor.fetchall()
cursor.close()
connection.close()
fig = Figure()
ax = fig.add_subplot(111)
x = []
y = []
x = [k[1] for k in data]
y = [k[0] for k in data]
ax.plot_date(x, y, '-')
ax.xaxis.set_major_formatter(DateFormatter('%Y-%m-%d'))
fig.autofmt_xdate()
canvas = FigureCanvas(fig)
response = HttpResponse(content_type='image/png')
canvas.print_png(response)
return response
所以在页面activation/activation_signupcount.html
上,我有2个日期字段,start和end,它们提交GET请求。所以我的问题是,如何将这两个日期变量解析为我的函数activation_signupcount_graph
以获取生成图表的开始/结束日期?
我希望这很清楚!
答案 0 :(得分:3)
您可以使用带有适当参数的url-templatetag访问模板中的图表视图。
所以看起来应该是这样的:
<img src="{% url yourapp.chart_view start_date end_date %}" />
或者,正如您使用的是get-parameters:
<img src="{% url yourapp.chart_view %}?datestart={{ datestart }}" />
答案 1 :(得分:0)
我使用系统范围的matplotlib库(从ubuntu存储库)添加到virtualenvs而不是通常的pip install .... anthem