django查询今天，昨天，一周，分组统计月，年

from django.db import models

# Create your models here.
class User(models.Model):   #用户名表
    username = models.CharField(max_length=16,verbose_name="用户名")
    password = models.CharField(max_length=32,verbose_name="密码")
    create_time = models.DateTimeField(auto_now_add=True,verbose_name="创建时间")
    last_time = models.DateTimeField(verbose_name="登录时间")

    class Meta:
        # 多列唯一索引
        unique_together = ('username','create_time')

INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (1, 'xiao1', 1234, '2020-01-01 13:14:52', '2020-01-01 13:14:52', 1);
INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (2, 'xiao2', 1234, '2020-02-02 13:14:52', '2020-02-02 13:14:52', 2);
INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (3, 'xiao3', 1234, '2020-03-03 13:14:52', '2020-03-03 13:14:52', 3);
INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (4, 'xiao4', 1234, '2020-04-04 13:14:52', '2020-04-04 13:14:52', 4);
INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (5, 'xiao5', 1234, '2020-05-05 13:14:52', '2020-05-05 13:14:52', 5);
INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (6, 'xiao6', 1234, '2020-06-06 13:14:52', '2020-06-06 13:14:52', 6);
INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (7, 'xiao7', 1234, '2020-07-07 13:14:52', '2020-07-07 13:14:52', 7);
INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (8, 'xiao8', 1234, '2020-07-23 13:14:52', '2020-07-22 13:14:52', 8);
INSERT INTO "main"."application_user" ("id", "username", "password", "create_time", "last_time", "ROWID") VALUES (9, 'xiao9', 1234, '2020-07-24 13:14:52', '2020-07-22 13:14:52', 9);

TIME_ZONE = 'Asia/Shanghai'

USE_I18N = True

USE_L10N = True

USE_TZ = False

from django.contrib import admin
from django.urls import path
from application import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('index/', views.index),
    path('month/', views.month),
    path('year/', views.year),
]

from django.shortcuts import render
import datetime
from application import models
from django.http import JsonResponse
import time
from dateutil.relativedelta import relativedelta
from django.db.models.functions import TruncMonth,TruncYear,ExtractYear,ExtractMonth
from django.db.models import Count
from django.db import connection

# Create your views here.
def index(request):
    # 今日###############
    today = datetime.datetime.now().date()
    ret = models.User.objects.filter(create_time__gte=str(today) + ' 00:00:00')
    today_len = len(ret)

    # 昨天###############
    yesterday = (datetime.datetime.now() + datetime.timedelta(days=-1)).date()
    ret = models.User.objects.filter(create_time__gte=str(yesterday) + ' 00:00:00',
                                         create_time__lte=str(today) + ' 23:59:59')
    yesterday_len = len(ret)

    # 一周前
    today = datetime.datetime.now().date()
    weekdelta = datetime.datetime.now().date() - datetime.timedelta(weeks=1)
    ret = models.User.objects.filter(create_time__gte=str(weekdelta) + ' 00:00:00',
                                         create_time__lte=str(today) + ' 23:59:59')
    week_len = len(ret)

    # 总数量
    ret = models.User.objects.all()
    total_len = len(ret)

    data = {
        "today": today_len,
        "yesterday": yesterday_len,
        "week": week_len,
        "total": total_len
    }

    return JsonResponse(data)


def month(request):
    # 当前年，月
    this_year = time.strftime("%Y", time.localtime(time.time()))
    this_month = time.strftime("%m", time.localtime(time.time()))

    # 按天分组
    select = {'day': connection.ops.date_trunc_sql('day', 'create_time')}
    count_data = models.User.objects.filter(create_time__year=this_year, create_time__month=this_month).extra(
        select=select).values('day').annotate(number=Count('id'))

    x_list = []
    y_list = []
    for i in count_data:
        x_list.append(i['day'])
        y_list.append(i['number'])

    data = {"x": x_list, "y": y_list}
    return JsonResponse(data)


def year(request):
    # 计算时间
    time_ago = datetime.datetime.now() - relativedelta(years=1)
    # print("time_ago",time_ago)
    # 获取近一年数据
    one_year_data = models.User.objects.filter(create_time__gte=time_ago)
    # 分组统计每个月的数据
    count_res = one_year_data \
        .annotate(year=ExtractYear('create_time'), month=ExtractMonth('create_time')) \
        .values('year', 'month').order_by('year', 'month').annotate(count=Count('id'))

    # 封装数据格式
    month_list = []
    count_list = []
    for i in count_res:
        month_list.append("%s-%s" % (i['year'], i['month']))
        count_list.append(i["count"])

    data = {"month": month_list, "count": count_list}
    return JsonResponse(data)

http://127.0.0.1:8001/index/

http://127.0.0.1:8001/month/

http://127.0.0.1:8001/year/