ajax结合sweetalert实现删除按钮动态效果
一、ajax结合sweetalert实现删除按钮动态效果
可以将sweetalert动态效果绑定在按钮的js事件上。可以使alert触发框好看一点。
当ajax需要对数据进行修改时,可以通过alert框进行确认。
// 可以在我的github上复制
$('.del').click(function () {
let $btn = $(this);
swal({
title: "确定要删除这条数据吗?",
text: "删了就真没了!就得跑路了!!",
type: "warning",
showCancelButton: true,
confirmButtonClass: "btn-danger",
confirmButtonText: "确认删除!",
cancelButtonText: "取消!",
closeOnConfirm: false,
closeOnCancel: false,
showLoaderOnConfirm: true // 等待后端处理时间 。。。动画
},
function (isConfirm) {
if (isConfirm) {
$.ajax({
url:'',
type:'post',
data:{'delete_id':$btn.attr('userId')},
success:function (data) {
if (data.code == 1000){
swal("数据已经删除!",data.msg,"warning");
$btn.parent().parent().remove()
}else {
swal("有Bug!","发生了未知的错误!","error");
}
}
});
} else {
swal("数据安全了 :)","别让别人发现你在干嘛 :)", "success");
}
});
})
二、bulk_create批量插入数据
1. 一条一条插入
很慢
def test(request):
for i in range(1000):
models.Test.objects.create(title=f'第{i}本书')
book_queryset = models.Test.objects.all()
return render(request,'test.html',locals())
2. 批量插入
很快
def test(request):
book_list = []
for i in range(10000):
book_list.append(models.Test(title=f'第二次第{i}本书'))
models.Test.objects.bulk_create(book_list) # 将整个列表插入数据库
book_queryset = models.Test.objects.all()
return render(request,'test.html',locals())
两者速度差距很大!!
三、自定义分页器
代码不需要掌握,只需要掌握推导思路。
需要掌握自定义分页器的使用方法!
后端:
# 测试批量插入数据
def test(request):
# 推导思路
# for i in range(1000):
# models.Test.objects.create(title=f'第{i}本书')
# book_list = []
# for i in range(10000):
# book_list.append(models.Test(title=f'第二次第{i}本书'))
# models.Test.objects.bulk_create(book_list) # 将整个列表插入数据库
# book_queryset = models.Test.objects.all()
# all_count = book_queryset.count()
# # 一页展示的数目
# per_page_num = 10
# all_page_num,more = divmod(all_count,per_page_num)
# if more:
# all_page_num += 1 # 确定到底需要多少页来展示
#
# # 用户想查看的当前页
# current_page = request.GET.get('page', 1)
# current_page = int(current_page)
#
# # 首尾页面
# start_page = (current_page - 1) * per_page_num
# end_page = current_page * per_page_num
#
# html = ''
# page_num = current_page
# if current_page<6:
# page_num = 6
# for i in range(current_page-3,current_page+4):
# if current_page == i:
# html += f'<li class="active"><a href="?page={i}">{i}</a></li>'
# else:
# html += f'<li><a href="?page={i}">{i}</a></li>'
# book_queryset = book_queryset[start_page:end_page]
# return render(request,'test.html',locals())
#-------------------------------------------------------------------
# 使用方法
book_queryset = models.Test.objects.all() # 你想要的分页展示的数据
current_page = request.GET.get('page',1) # 获取当前页
all_count = book_queryset.count() # 统计数据的总条数
page_obj = Pagination(current_page=current_page,all_count=all_count,per_page_num=15,pager_count=7) # 生成分页器对象
page_queryset = book_queryset[page_obj.start:page_obj.end] # 对数据进行切片
return render(request,'test.html',locals())
前端:
{% for book in page_queryset %}
<p>{{ book.title }}</p>
{% endfor %}
{{ page_obj.page_html|safe }} # 自动渲染页面及样式