django 統計過去5年每個月採購設備的數量並且用條形圖顯示

 

1.  視圖函數

 

def totalchart(request):

    template = loader.get_template('deviceman/pyecharts.html')

    
    monthpc=monthpcbar(request)
   st)


    context = dict(


        monthechart=monthpc.render_embed(),
       ),

        host=REMOTE_HOST,

        script_list=b.get_js_dependencies()

    )

    return HttpResponse(template.render(context, request))

def monthpcbar(request):
    site_id = request.session.get('current_site')
    
    x = []
    y = []
    for i in range(datetime.now().year - 4, datetime.now().year + 1):
         #print(i)
         select_data = {"receive_month": 'extract(month from receive_date )'}
         res = pc_list.objects.filter(receive_date__year=i, site_id=site_id, hosttype_id__in=[1,2,3]).extra(select=select_data).values(
            'receive_month').annotate(count=Count('id')).order_by('receive_month')


         #print(res)
         for re in res:

             )
             x.append(str(i)+'-'+str(re['receive_month']))
             
             y.append(re['count'])
         #x=[i[0] for i in res]
         #print(x)
    #x = ['sz','bj','gz']
   #
         #y=[i[1] for i in res]
         #print(y)
    #y = [10,20,30]
   #  #_data.append()

    bar=Bar("computers each month",width='100%',height=500)
    #
    bar.add("數量",x, y, type="effectScatter", border_color="#ffffff", symbol_size=2,
    #
            is_label_show=True, label_text_color="#0000FF", label_pos="inside", symbol_color="yellow",
    #
             bar_normal_color="#0000ff", bar_emphasis_color="#0000ff",xaxis_rotate=40)
    #


    return bar

 

urls.py

path('totalchart', totalechart.totalchart),

 

2. 模板html

 

{% for jsfile_name in script_list %}

    <script src="{{ host }}/{{ jsfile_name }}.js"></script>

{% endfor %}

      <p>


{{ monthechart|safe }}

        </p>

 

3. 在本人另外一篇博文中將會演示如何統計過去5年中每年採購電腦數量，並且用圖表顯示，其中的關鍵生成XXXX年及更早的數量。如下圖