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主頁(yè) > 知識(shí)庫(kù) > 基于Ajax和forms組件實(shí)現(xiàn)注冊(cè)功能的實(shí)例代碼

基于Ajax和forms組件實(shí)現(xiàn)注冊(cè)功能的實(shí)例代碼

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" >
  link href="{{ getstatic }}plugins/bootstrap-3.3.7/css/bootstrap.min.css" rel="stylesheet">
  title>注冊(cè)頁(yè)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截圖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="#">首頁(yè)/a>/li>
        li>a href="#">登錄/a>/li>
        li>a href="#">注冊(cè)/a>/li>
        li>a href="#">幫助/a>/li>
      /ul>
    /div>!-- /.navbar-collapse -->
  /div>!-- /.container-fluid -->
/nav>
div class="container body-box" style="height: 567px;">
  div class="center-block body-content">
    !--頭部提示-->
    div class="hidden-xs title-top col-sm-12">
      注冊(cè)新用戶
      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="用戶頭像">
            頭像
          /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">郵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">昵稱/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;碼/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">確認(rèn)密碼/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>
        !--注冊(cè)按鈕-->
        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="登錄">
          /div>
        /div>
        !--協(xié)議提示-->
        div class="col-sm-offset-2 register-sign">
          span class="asterisk">*/span> “注冊(cè)” 按鈕，即表示您同意并愿意遵守 a class="look-agreeon" target="_blank"
                                      >用戶協(xié)議/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>

上面的代碼只是HTML ，而JavaScript在下面實(shí)例中

script>
   $("#avatar").change(function () {
    var chooice_file = $(this)[0].files[0];
    var reader = new FileReader();// 注意這里，預(yù)覽本地文件
    reader.readAsDataURL(chooice_file);
    reader.onload=function () {
      $("#avatar_img").attr("src",this.result)
    }
  })
  function regesite() {
    var formdata = new FormData(); //z注意這里 涉及文件上傳
    formdata.append("email",$("#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 " rel="external nofollow" login" %}"
        }else {
          // 清空上次錯(cuò)誤信息
          $("form span").html("")
          $(".has-feedback").removeClass("has-error")
          $.each(response_data.error_msg,function (fiel, error_info) {
            // 顯示錯(cuò)誤信息
            $("#id_"+fiel).parent().addClass("has-error");
            $("#id_"+fiel).next().html(error_info[0]);//顯示全局錯(cuò)誤 // 注意這里
            if(fiel=="__all__"){
              $("#id_repeta_pwd").next().html(error_info[0]).css("color","red")
            }
          })
        }
      }
    })
  }
/script>

FileReader

FileReader主要用于將文件內(nèi)容讀入內(nèi)存，通過(guò)一系列異步接口，可以在主線程中訪問(wèn)本地文件。

使用FileReader對(duì)象，web應(yīng)用程序可以異步的讀取存儲(chǔ)在用戶計(jì)算機(jī)上的文件(或者原始數(shù)據(jù)緩沖)內(nèi)容，可以使用File對(duì)象或者Blob對(duì)象來(lái)指定所要處理的文件或數(shù)據(jù)。

設(shè)計(jì)RegisterForm組件

from django import forms
from . import models
from django.forms import widgets
from django.core.exceptions import NON_FIELD_ERRORS, ValidationError
class RegisterForm(forms.Form):
  nik_name = forms.CharField(max_length=32,
                widget=widgets.TextInput(attrs={"class":"form-control"}),
                error_messages={"required":"用戶不能為空"})
  email = forms.EmailField(widget=widgets.EmailInput(attrs={"class":"form-control"}),
               error_messages={"required":"郵箱不能為空", "invalid":"郵箱格式錯(cuò)誤"})
  password = forms.CharField(min_length=5, widget=widgets.PasswordInput(attrs={"class":"form-control"}),
                error_messages={"required": "密碼不能為空",
                        "min_length":"最小長(zhǎng)度5位",
                        }
                )
  repeta_pwd = forms.CharField(widget=widgets.PasswordInput(attrs={"class":"form-control"}),
                 error_messages={"required": "密碼不能為空"})
  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("用戶已存在")
  def clean(self): //全局鉤子
    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("兩次密碼不一致")
    else:
      return self.cleaned_data

服務(wù)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") #注意這里使用的request.FILES.get("")
      if not valid:
        valid = "avatardir/TIM圖片20171209211626.gif"
      check_user = models.UserInfo.objects.create_user(username=nik_name,nik_name=nik_name, email=email,
                                password=password,
                                avatar=valid
                              ) # 注意這里保存導(dǎo)數(shù)據(jù)庫(kù)中的是圖片路徑，并不是圖片
      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="主鍵")

注意：

　　upload_to ：默認(rèn)把文件夾創(chuàng)建至根目錄下，如創(chuàng)建至指定位置，需要在setting中配置media。

如：希望用戶上傳的文件單獨(dú)存儲(chǔ)，在setting中配置，

MEDIA_ROOT= os.path.jion(BASE_DIR,"blog","media")
//此時(shí)，用戶上傳文件時(shí)，先創(chuàng)建并將文件保存至“putImg”文件夾中，“putImg”，然后將“putImg”放至對(duì)應(yīng)的路徑中。
# media 配置
url(r"^media/(?Ppath>.*)",sever,{"document_root":setting.MEDIA_ROOT})

配置好上面的url 后，用戶可以訪media 文件夾下面的所有文件

注意：

 server ，是從django.views.static import server導(dǎo)入
　　　  from . import settings //url中的使用

總結(jié)

以上所述是小編給大家介紹的基于Ajax和forms組件實(shí)現(xiàn)注冊(cè)功能，希望對(duì)大家有所幫助，如果大家有任何疑問(wèn)請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持！

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