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背景：djiango项目，models.py中add_at的类型定义为DateTimeField格式；

class userinfo(models.Model):    add_at = models.DateTimeField(  )    .......

view.py中，代码关键是设置好每月的起止时间，再按区间过滤和计数。

def get_reguser():    regtotal = 0    chart_data = []    start_day = datetime.datetime(2013, 3, 1, 0, 0, 0, 0)    now = datetime.datetime.now()    cur_day = start_day    while cur_day < now:        month = cur_day.month + 1        year = cur_day.year        if month > 12:            month = 1            year = year + 1        end_day = datetime.datetime(year, month, 1)        #        regcount = userinfo.objects.filter(add_at__gt=cur_day, add_at__lt=end_day).count() #过滤并计数        citem = {}        citem['name'] = cur_day.strftime('%Y-%m')        citem['val'] = regcount        regtotal = regtotal + regcount        chart_data.append(citem)        #        cur_day = end_day    return regtotal,chart_data

贴心小棉袄最后再附上前端显示代码：

# 套用echart柱状图模板的数据格式var data_x =  [{% for item in chart_data %}'{
   {item.name|safe}}',{%endfor%}];var data_y =  [{% for item in chart_data %}'{
   {item.val|safe}}',{%endfor%}];option = {            title : {                text: '**注册用户统计',                subtext: '注册总人数{
   {reg_total}}',                left: 'center'            },        ...        }

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