ajax结合sweetalert实现删除按钮动态效果
如果ajax进行前后端交互，通常后端返回给ajax一个字典
<body>
<div class="container">
<div class="row">
<div class="col-md-8 col-md-offset-2">
<h1 class="text-center">数据展示</h1>
<br>
<table class="table table-hover table-bordered table-striped">
<thead>
<tr>
<th>序号</th>
<th>用户名</th>
<th>年龄</th>
<th>性别</th>
<th class="text-center">操作</th>
</tr>
</thead>
<tbody>
{% for user_obj in user_queryset %}
<tr>
<td>{{ forloop.counter }}</td>
<td>{{ user_obj.username }}</td>
<td>{{ user_obj.age }}</td>
<td>{{ user_obj.get_gender_display }}</td>
<td class="text-center">
<a href="#" class="btn btn-primary btn-sm">编辑</a>
<a href="#" class="btn btn-primary btn-sm cancle" userid="{{ user_obj.pk }}">删除</a>
</td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
</div>
</div>
<script>
$('.cancle').click(function () {
var $btn=$(this)
swal({
title: "确定删除吗?",
text: "如果删除了，就无法恢复数据了!",
type: "warning",
showCancelButton: true,
confirmButtonClass: "btn-danger",
confirmButtonText: "确定删除!",
cancelButtonText: "算了，取消删除!",
closeOnConfirm: false,
closeOnCancel: false,
showLoaderOnConfirm: true
},
function(isConfirm) {
if (isConfirm) {
$.ajax({
url:'',
type:'post',
data:{'delete_id':$btn.attr('userid')},
success:function (data) {
if(data.code==1000){
swal("已经删除了!",data.msg, "success");
$btn.parent().parent().remove()
}else {
swal("有bug!",'发生未知的错误', "warning");
}
}
})
} else {
swal("谨言慎行", "牛逼啊", "error");
}
});
})
</script>
</body>
from django.http import JsonResponse
def home(request):
if request.is_ajax():
back_dic={'code':1000,'msg':''}
delete_id=request.POST.get('delete_id')
time.sleep(3)
models.User.objects.filter(pk=delete_id).delete()
back_dic['msg']='数据已经删除了'
return JsonResponse(back_dic)
user_queryset=models.User.objects.all()
return render(request,'home.html',locals())
bulk_create批量插入数据
<body>
{% for book_obj in book_queryset %}
<p>{{ book_obj.title }}</p>
{% endfor %}
</body>
def index(request):
book_list=[]
for i in range(1000):
book_list.append(models.Book(title=f'第{i}本书'))
#批量插入数据，建议使用bulk_cteate方法
models.Book.objects.bulk_create(book_list)
book_queryset=models.Book.objects.all()
return render(request,'index.html',locals())
自定义分页器
推导
book_queryset = models.Book.objects.all()
# 一页展示的条数
per_page_num = 10
all_count=book_queryset.count()
all_page_num,more=divmod(all_count,per_page_num)
if more:
all_page_num+=1#需要多少也面展示
#用户想要查看的页码
current_page=request.GET.get('page',1)
current_page=int(current_page)
start_page=(current_page-1)*per_page_num
end_page=current_page*per_page_num
html=''
xxx=current_page
if current_page<6:
xxx=6
for i in range(xxx-5,xxx+6):
if current_page==i:
html+='<li class="active"><a href="?page=%s">%s</a></li>'%(i,i)
else:
html+='<li><a href="?page=%s">%s</a></li>'%(i,i)
book_queryset=book_queryset[start_page:end_page]
return render(request,'index.html',locals())
<div class="container">
<div class="col-md-offset-2 col-md-8">
{% for book_obj in book_queryset %}
<p>{{ book_obj }}</p>
{% endfor %}
<nav aria-label="Page navigation">
<ul class="pagination">
<li>
<a href="#" aria-label="Previous">
<span aria-hidden="true">«</span>
</a>
</li>
{{ html|safe }}
<li>
<a href="#" aria-label="Next">
<span aria-hidden="true">»</span>
</a>
</li>
</ul>
</nav>
</div>
</div>
自定义
1.在应用下创建一个目录（utils），在目录下创建一个py文件。
class Pagination(object):
def __init__(self, current_page, all_count, per_page_num=2, pager_count=11):
"""
封装分页相关数据
:param current_page: 当前页
:param all_count: 数据库中的数据总条数
:param per_page_num: 每页显示的数据条数
:param pager_count: 最多显示的页码个数
用法:
queryset = model.objects.all()
page_obj = Pagination(current_page,all_count)
page_data = queryset[page_obj.start:page_obj.end]
获取数据用page_data而不再使用原始的queryset
获取前端分页样式用page_obj.page_html
"""
try:
current_page = int(current_page)
except Exception as e:
current_page = 1
if current_page < 1:
current_page = 1
self.current_page = current_page
self.all_count = all_count
self.per_page_num = per_page_num
# 总页码
all_pager, tmp = divmod(all_count, per_page_num)
if tmp:
all_pager += 1
self.all_pager = all_pager
self.pager_count = pager_count
self.pager_count_half = int((pager_count - 1) / 2)
@property
def start(self):
return (self.current_page - 1) * self.per_page_num
@property
def end(self):
return self.current_page * self.per_page_num
def page_html(self):
# 如果总页码 < 11个：
if self.all_pager <= self.pager_count:
pager_start = 1
pager_end = self.all_pager + 1
# 总页码 > 11
else:
# 当前页如果<=页面上最多显示11/2个页码
if self.current_page <= self.pager_count_half:
pager_start = 1
pager_end = self.pager_count + 1
# 当前页大于5
else:
# 页码翻到最后
if (self.current_page + self.pager_count_half) > self.all_pager:
pager_end = self.all_pager + 1
pager_start = self.all_pager - self.pager_count + 1
else:
pager_start = self.current_page - self.pager_count_half
pager_end = self.current_page + self.pager_count_half + 1
page_html_list = []
# 添加前面的nav和ul标签
page_html_list.append('''
<nav aria-label='Page navigation>'
<ul class='pagination'>
''')
first_page = '<li><a href="?page=%s">首页</a></li>' % (1)
page_html_list.append(first_page)
if self.current_page <= 1:
prev_page = '<li class="disabled"><a href="#">上一页</a></li>'
else:
prev_page = '<li><a href="?page=%s">上一页</a></li>' % (self.current_page - 1,)
page_html_list.append(prev_page)
for i in range(pager_start, pager_end):
if i == self.current_page:
temp = '<li class="active"><a href="?page=%s">%s</a></li>' % (i, i,)
else:
temp = '<li><a href="?page=%s">%s</a></li>' % (i, i,)
page_html_list.append(temp)
if self.current_page >= self.all_pager:
next_page = '<li class="disabled"><a href="#">下一页</a></li>'
else:
next_page = '<li><a href="?page=%s">下一页</a></li>' % (self.current_page + 1,)
page_html_list.append(next_page)
last_page = '<li><a href="?page=%s">尾页</a></li>' % (self.all_pager,)
page_html_list.append(last_page)
# 尾部添加标签
page_html_list.append('''
</nav>
</ul>
''')
return ''.join(page_html_list)
导入上面写的py文件
from app01.utils.mypage import Pagination
def index(request):
#自定义分页器的使用
book_queryset = models.Book.objects.all()
# 用户想要查看的页码
current_page = request.GET.get('page', 1)
all_count=book_queryset.count()
page_obj=Pagination(current_page=current_page,all_count=all_count,per_page_num=10,pager_count=5)
page_queryset=book_queryset[page_obj.start:page_obj.end]# book_queryset = book_queryset[start_page:end_page]
return render(request,'index.html',locals())
<div class="container-fluid">
<div class="row">
<div class="col-md-8 col-md-offset-2">
{% for book in page_queryset %} <!--将页面上原本的queryset数据全部换成切片之后的queryset即可-->
<p>{{ book }}</p>
{% endfor %}
{{ page_obj.page_html|safe }}
</div>
</div>
</div>
多对多三种创建方式
forms组件
cookie与session操作
django中间件
跨站请求伪造csrf
auth模块
bbs小作业