基于Ajax和forms组件实现注册功能的实例代码-侯体宗的博客

基于Ajax和forms组件实现注册功能的实例代码
前端 / 管理员发布于 4年前 244

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="//article/{{ 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="//article/{{ 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="//article/{{ getstatic }}img/registersideimg.png" alt="用户头像">            头像          </label>            <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       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       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="https://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="//article/{{ getstatic }}img/registersideimg.png">      </div>    </div>  </div></div><script src="//article/{{ getstatic }}js/jquery-3.2.1.min.js"></script><script src="//article/{{ 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="//article/{% url " rel="external nofollow" 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。

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

总结

以上所述是小编给大家介绍的基于Ajax和forms组件实现注册功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对站的支持！

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