本文实例讲述了Django开发中复选框用法。分享给大家供大家参考,具体如下:
一、查询数据库遍历所有的复选框
1、python查询数据库所有的tag
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# 新增文章
def add(request):
if request.method = = 'GET' :
tags = TagModel.objects. all ()
return render(request, 'books_add.html' , { 'tags' : tags})
elif request.method = = 'POST' :
title = request.POST.get( 'title' , None )
content = request.POST.get( 'content' , None )
blogModel = BlogModel(title = title, content = content, author = AuthorModel.objects.get( id = 1 ))
blogModel.save()
# 获取复选框的值,是一个选中的数组
tags = request.POST.getlist( 'tags' )
# 循环遍历所有选中的复选框,利用多对多的关系追加到数据库
for tag in tags:
blogModel.tag.add(tag)
return HttpResponseRedirect( 'book_add' )
else :
return HttpResponse(u '是不被处理的请求方式' )
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2、前端页面
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< div class = "form-group" >
< label class = "col-sm-2 control-label" >标签</ label >
< div class = "col-sm-9" >
{% for tag in tags %}
< label class = "checkbox-inline" >
< input value = "{{ tag.id }}" type = "checkbox" name = "tags" />{{ tag.name }}
</ label >
{% endfor %}
</ div >
</ div >
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3、进入编辑页面,先获取全部的复选框及选中的id
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# 编辑博客
def edit(request, blog_id):
tags = TagModel.objects. all ()
# 利用正向查找关于本博客选择的tag
blogModel = BlogModel.objects. filter ( id = blog_id).first()
# 获取全部的tag
check_tag = blogModel.tag. all ()
# 获取选中的id
check_id = [ int (x. id ) for x in check_tag]
print check_id
return render(request, 'books_edit.html' , { 'tags' : tags, 'check_id' : check_id})
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4、判断如果选中的就勾选
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< div class = "form-group" >
< label class = "col-sm-2 control-label" >标签</ label >
< div class = "col-sm-9" >
{% for tag in tags %}
{% if tag.id in check_id %}
< label class = "checkbox-inline" >
< input value = "{{ tag.id }}" type = "checkbox" name = "tags" checked = "checked" />{{ tag.name }}
</ label >
{% else %}
< label class = "checkbox-inline" >
< input value = "{{ tag.id }}" type = "checkbox" name = "tags" />{{ tag.name }}
</ label >
{% endif %}
{% endfor %}
</ div >
</ div >
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二、ajax提交的时候注意要把复选框转换字符串提交
1、前端代码
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$( '#btn' ).on( 'click' , function (e) {
// 设置空数组
var hobby = [];
$( '#hobby-group' ).find( 'input[type=checkbox]' ).each( function () {
if ($( this ).prop( "checked" )) {
var hobbyId = $( this ).val();
hobby.push(hobbyId);
}
})
console.log(hobby);
$.ajax({
'url' : '/ajaxpost/' ,
'method' : 'post' ,
'data' : {
'username' : $( '.username' ).val(),
'hobby' : hobby
},
'traditional' : true ,
'beforeSend' : function (xhr, settings) {
var csrftoken = ajaxpost.getCookie( 'csrftoken' );
//2.在header当中设置csrf_token的值
xhr.setRequestHeader( 'X-CSRFToken' , csrftoken);
},
'success' : function (data) {
console.log(data);
}
})
})
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2、后端代码
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@require_http_methods ([ 'POST' ])
def ajaxpost(request):
form = LoginForm(request.POST)
if form.is_valid():
username = form.cleaned_data.get( 'username' , None )
# 获取复选框的值
hobby = request.POST.getlist( 'hobby' )
print '*' * 100
print hobby
print '*' * 100
return HttpResponse(u '成功' )
else :
return HttpResponse(u '验证错误' )
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希望本文所述对大家Django框架的Python程序设计有所帮助。
原文链接:http://blog.csdn.net/kuangshp128/article/details/75948310