基于Ajax和forms组件实现注册功能

2018-02-28 07:46:28来源:cnblogs.com作者:AndRew-A人点击

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前端HTML

<!DOCTYPE html>{% load static %}{% get_static_prefix as getstatic %}<html lang="zh-CN"><head>    <meta charset="UTF-8">    <meta http-equiv="x-ua-compatible" content="IE=edge">    <meta name="viewport" content="width=device-width, initial-scale=1">    <link rel="icon" href="https://www.jd.com/favicon.ico">    <link href="{{ getstatic }}plugins/bootstrap-3.3.7/css/bootstrap.min.css" rel="stylesheet">    <title>注册页面</title>    <style>        .title-top {            padding: 0;            font-size: 21px;            margin-top: 40px;        }        .form-padding {            padding-right: 65px;        }        .has-feedback .country-code {            width: 53px;            text-align: right;            padding-right: 5px;        }        .mobile-control-wrap {            display: flex;        }        .mobile-num {            margin-left: 10px;        }        .form-horizontal .form-group {            margin-right: -15px;            margin-left: -15px;        }        .body-box {            margin-top: 70px;            height: 567px;            width: 68%;        }        .cnblogs-btn-blue {            color: white;            padding: 6px 14px;            letter-spacing: 1em;            padding-left: 2em;            background-color: RGB(70, 136, 214);            text-align: center;        }        .cnblogs-btn-blue :hover {            color: white;        }        .navbar {            background-color: RGB(40, 62, 92);        }        .side-img-box {            height: 300px;            position: relative;            padding-left: 0;            margin-top: 168px;        }        .side-img-box img {            position: relative;            width: 100%;            top: 50%;            transform: translateY(-50%);            border-radius: 8px;        }        .text-danger {            float: right;        }        .img-thumbnail {            width: 100px;            height: 100px;            margin-bottom: 20px;            margin-top: -10px;        }        #avatr_img {            margin-left: 237px;        }    </style></head><body><nav class="navbar navbar-inverse navbar-fixed-top">    <div class="container">        <!-- Brand and toggle get grouped for better mobile display -->        <div class="navbar-header">            <img src="{{ getstatic }}img/TIM截图20180205110238.png">        </div>        <!-- Collect the nav links, forms, and other content for toggling -->        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">            <ul class="nav navbar-nav navbar-right">                <li><a href="#">首页</a></li>                <li><a href="#">登录</a></li>                <li><a href="#">注册</a></li>                <li><a href="#">帮助</a></li>            </ul>        </div><!-- /.navbar-collapse -->    </div><!-- /.container-fluid --></nav><div class="container body-box" style="height: 567px;">    <div class="center-block body-content">        <!--头部提示-->        <div class="hidden-xs title-top col-sm-12">            注册新用户            <hr class="head-hr">        </div>        <div class="form-wrap">            <form class="form-horizontal col-sm-8 form-padding" role="form" id="registerForm" method="post"                  novalidate="novalidate">                <!--每一行-->                <div id="avatr_img" class="form-group">                    <label for="avatar">                        <img id="avatar_img" class="img-thumbnail" src="{{ getstatic }}img/registersideimg.png" alt="用户头像">                        头像                    </label>&nbsp;&nbsp;                    <input type="file" style="display: none;" id="avatar">                </div>                <div class="form-group">                    <div class="col-sm-2 control-label">                        <label class="w4-2" for="Email">邮&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;箱</label>                    </div>                    <div class="col-sm-10 has-feedback">                        {{ register_form.email }}                        <span class="text-danger"></span>                    </div>                </div>                <div class="form-group">                    <div class="col-sm-2 control-label">                        <label class="w4-4" for="DisplayName">昵称</label>                    </div>                    <div class="col-sm-10 has-feedback">                        {{ register_form.nik_name }}                        <span class="text-danger field-validation-error"><span id="DisplayName-error"></span></span>                    </div>                </div>                <div class="form-group">                    <div class="col-sm-2 control-label">                        <label class="w4-2" for="Password">密&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;码</label>                    </div>                    <div class="col-sm-10 has-feedback">                        {{ register_form.password }}                        <span class="text-danger field-validation-error"></span>                    </div>                </div>                <div class="form-group">                    <div class="col-sm-2 control-label">                        <label class="w4-4" for="ConfirmPassword">确认密码</label>                    </div>                    <div class="col-sm-10 has-feedback">                        {{ register_form.repeta_pwd }}                        <span class="text-danger field-validation-error"><span id="mobile-error"></span></span>                    </div>                </div>                <!--注册按钮-->                <div class="form-group">                    <div class="col-sm-offset-2 col-sm-10">                        <span class="col-sm-12 ajax-error"></span>                        <input id="submitBtn" onclick="regesite()" type="button"                               class="btn ladda-button center-block cnblogs-btn-blue" value="登录">                    </div>                </div>                <!--协议提示-->                <div class="col-sm-offset-2 register-sign">                    <span class="asterisk">*</span> “注册” 按钮,即表示您同意并愿意遵守 <a class="look-agreeon" target="_blank"                                                                           href="//passport.cnblogs.com/agreement.html">用户协议</a>。                </div>                <!--hidden-->                {% csrf_token %}            </form>            <div class="hidden-xs col-sm-4 side-img-box">                <div class="side-line">                    <div></div>                </div>                <img src="{{ getstatic }}img/registersideimg.png">            </div>        </div>    </div></div><script src="{{ getstatic }}js/jquery-3.2.1.min.js"></script><script src="{{ getstatic }}plugins/bootstrap-3.3.7/js/bootstrap.min.js"></script></body></html>

上面的代码只是HTML ,而JavaScript在下面实例中

<script>        $("#avatar").change(function () {        var chooice_file = $(this)[0].files[0];        var reader = new FileReader();// 注意这里,预览本地文件        reader.readAsDataURL(chooice_file);        reader.onload=function () {            $("#avatar_img").attr("src",this.result)        }    })    function regesite() {        var formdata = new FormData(); //z注意这里  涉及文件上传        formdata.append("email",$("#id_email").val());        formdata.append("nik_name",$("#id_nik_name").val());        formdata.append("password",$("#id_password").val());        formdata.append("repeta_pwd",$("#id_repeta_pwd").val());        formdata.append("valid_img",$("#avatar")[0].files[0]);        formdata.append("csrfmiddlewaretoken",$("[name='csrfmiddlewaretoken']").val());        $.ajax({            url: "{% url "regeste" %}",            type: "POST",            data:formdata,            contentType:false,            processData:false,            success: function (data) {                response_data = JSON.parse(data)                if(response_data.user){                    location.href="{% url "login" %}"                }else {                    // 清空上次错误信息                    $("form span").html("")                    $(".has-feedback").removeClass("has-error")                    $.each(response_data.error_msg,function (fiel, error_info) {                        // 显示错误信息                        $("#id_"+fiel).parent().addClass("has-error");                        $("#id_"+fiel).next().html(error_info[0]);//显示全局错误  // 注意这里                        if(fiel=="__all__"){                            $("#id_repeta_pwd").next().html(error_info[0]).css("color","red")                        }                    })                }            }        })    }</script>

FileReader

FileReader主要用于将文件内容读入内存,通过一系列异步接口,可以在主线程中访问本地文件。

使用FileReader对象,web应用程序可以异步的读取存储在用户计算机上的文件(或者原始数据缓冲)内容,可以使用File对象或者Blob对象来指定所要处理的文件或数据。

更多关于FileReader()

设计RegisterForm组件

from django import formsfrom . import modelsfrom django.forms import widgetsfrom django.core.exceptions import NON_FIELD_ERRORS, ValidationErrorclass RegisterForm(forms.Form):    nik_name = forms.CharField(max_length=32,                               widget=widgets.TextInput(attrs={"class":"form-control"}),                               error_messages={"required":"用户不能为空"})    email = forms.EmailField(widget=widgets.EmailInput(attrs={"class":"form-control"}),                             error_messages={"required":"邮箱不能为空", "invalid":"邮箱格式错误"})    password = forms.CharField(min_length=5, widget=widgets.PasswordInput(attrs={"class":"form-control"}),                               error_messages={"required": "密码不能为空",                                               "min_length":"最小长度5位",                                               }                               )    repeta_pwd =  forms.CharField(widget=widgets.PasswordInput(attrs={"class":"form-control"}),                                  error_messages={"required": "密码不能为空"})    def clean_nik_name(self):        name = self.cleaned_data.get("nik_name")        users = models.UserInfo.objects.filter(nik_name=name)        if  not users:            return name        else:            raise ValidationError("用户已存在")    def clean(self): //全局钩子        pwd = self.cleaned_data.get("password")        repeta_pwd = self.cleaned_data.get("repeta_pwd")        if pwd and repeta_pwd:            if pwd == repeta_pwd:                return self.cleaned_data            else:                raise ValidationError("两次密码不一致")        else:            return self.cleaned_data

服务器

    def post(self,request):        reg_response = {"user": None,"error_msg":""}        register_form = RegisterForm(request.POST)        if register_form.is_valid():            email = request.POST.get("email")            nik_name = request.POST.get("nik_name")            password = request.POST.get("password")            repeta_pwd = request.POST.get("repeta_pwd")            valid = request.FILES.get("valid_img")  #注意这里使用的request.FILES.get("")            if not valid:                valid = "avatardir/TIM图片20171209211626.gif"            check_user = models.UserInfo.objects.create_user(username=nik_name,nik_name=nik_name, email=email,                                                                password=password,                                                                avatar=valid                                                            )  # 注意这里保存导数据库中的是图片路径,并不是图片            reg_response = {"user": "user", "error_msg": ""}            return HttpResponse(json.dumps(reg_response))        else:            reg_response["error_msg"]=register_form.errors            return HttpResponse(json.dumps(reg_response))

Model中 Userifor 的img

avatar = models.FileField(upload_to='avatar/', default="/avatar/default.gif", verbose_name="主键")

注意:

  upload_to :默认把文件夹创建至根目录下,如创建至指定位置,需要在setting中配置media。

     如:希望用户上传的文件单独存储,在setting中配置,

MEDIA_ROOT= os.path.jion(BASE_DIR,"blog","media")//此时,用户上传文件时,先创建并将文件保存至“putImg”文件夹中,“putImg”,然后将“putImg”放至对应的路径中。# media 配置url(r"^media/(?P<path>.*)",sever,{"document_root":setting.MEDIA_ROOT})配置好上面的url 后,用户可以访media 文件夹下面的所有文件   注意:        server ,是从django.views.static import server导入
    from . import settings //url中的使用
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