Django学习笔记（15）实现模糊查询和精确查询

Django后端实现模块查询和精确查询

views.py

from django.db.models import Q
from django.forms import model_to_dict
from django.http import JsonResponse
from django.core.paginator import Paginator
from django.views import View

class CaseView(View):
    def get(self,request):
        limit = request.GET.get('limit',20)#分页，获取每页xxx条
        page = request.GET.get('page',1)#分页，获取第xxx页
        search = request.GET.get('search')#模糊搜索关键字 , 请求： /api/case?search=xxx
        filter_field = ['id','title','method']#关键字精确查询,通过哪些字段查询 , 请求： /api/case?id=xxx&title=xxx
        filter_dict = {}  #{id:1,title:xxx,method:2}
        for field in filter_field:
            value = request.GET.get(field)
            if value:
                filter_dict[field] = value
        if filter_dict:
            case_sets = models.Case.objects.filter(**filter_dict)
        elif search:#模糊查询
            case_sets = models.Case.objects.filter(Q(title__contains=search) |
                                   Q(desc__contains=search) |
                                   Q(url__contains=search) |
                                   Q(params__contains=search))#模糊查询
        else:
            case_sets = models.Case.objects.filter(is_delete=False)#查询所有

        paginator = Paginator(case_sets,limit) #分页，获取分页对象
        page_data = paginator.page(page)  #分页，获取分页数据，返回的是model对象

        data = []
        for c in page_data:#分页字典拼接成list
            d = model_to_dict(c)
            data.append(d)
        response = {'code': 0, 'msg': '添加成功', 'data': data,'count':paginator.count}
        return JsonResponse(response, json_dumps_params={'ensure_ascii': False})  # 汉字不转义