注册页面的头像上传 register.html
<!DOCTYPE html>
1 <html lang="en"> 2 <head> 3 <meta charset="UTF-8"> 4 <title>Title</title> 5 </head> 6 <body> 7 <div style="margin-left: 30px; margin-top: 30px"> 8 <form action=""> 9 {% csrf_token %} 10 <h3>用户注册</h3> 11 <p>用户名：<input type="text" name="user"></p> 12 <p>密 码 ：<input type="password" name="pwd"></p> 13 <p>再输入：<input type="password" name="pwd"></p> 14 <p>昵 称 ：<input type="text" name="nickname"></p> 15 <p>邮 箱 ：<input type="text" name="email"></p> 16 <input id="avatar" type="file" value="上传头像"> {# 实际应用中要将该input标签隐藏，display:none; #} 17 <p><input type="submit" value="注册" style="margin-left:50px;width:100px;"></p> 18 </form> 19 <div style="position: absolute; top: 85px; left: 300px;"> 20 <input id="avatarSelect" type="file" style="position: absolute;float: left; z-index: 10; opacity: 0;width: 100px; height: 100px;"> 21 <img id="avatarPreview" src="/static/img/default.png" title="点击更换图片" style="position: absolute; z-index: 9; float: left; width: 100px; height: 100px"> 22 </div> 23 </div> 24 </body> 25 26 <script src="\static\jquery-3.3.1.min.js"></script> 27 <script> 28 $(function () { 29 bindAvatar(); 30 }); 31 32 function bindAvatar() { 33 if(window.URL.createObjectURL){ 34 bindAvatar3(); 35 }else if(window.FileReader){ 36 bindAvatar2(); 37 }else { 38 bindAvatar1(); 39 } 40 } 41 42 /*Ajax上传至后台并返回图片的url*/ 43 function bindAvatar1() { 44 $("#avatarSelect").change(function () { 45 var csrf = $("input[name=‘csrfmiddlewaretoken‘]").val(); 46 var formData=new FormData(); 47 formData.append("csrfmiddlewaretoken",csrf); 48 formData.append(‘avatar‘, $("#avatarSelect")[0].files[0]); 49 console.log(formData); 50 /*获取上传的图片对象*/ 51 $.ajax({ 52 url: ‘/avatar_load/‘, 53 type: ‘POST‘, 54 data: formData, 55 contentType: false, 56 processData: false, 57 success: function (args) { 58 console.log(‘年后哦‘) 59 console.log(args); /*服务器端的图片地址*/ 60 $("#avatarPreview").attr(‘src‘,‘/‘+args); /*预览图片*/ 61 $("#avatar").val(‘/‘+args); /*将服务端的图片url赋值给form表单的隐藏input标签*/ 62 } 63 }) 64 }) 65 } 66 /*window.FileReader本地预览*/ 67 function bindAvatar2() { 68 console.log(2); 69 $("#avatarSelect").change(function () { 70 var obj=$("#avatarSelect")[0].files[0]; 71 var fr=new FileReader(); 72 fr.readAsDataURL(obj); 73 fr.onload=function () { 74 $("#avatarPreview").attr(‘src‘,this.result); 75 console.log(this.result); 76 $("#avatar").val(this.result); 77 }; 78 fr.readAsDataURL(obj); 79 }) 80 } 81 /*window.URL.createObjectURL本地预览*/ 82 function bindAvatar3() { 83 console.log(3); 84 $("#avatarSelect").change(function () { 85 var obj=$("#avatarSelect")[0].files[0]; 86 var wuc=window.URL.createObjectURL(obj); 87 $("#avatarPreview").attr(‘src‘,wuc); 88 $("#avatar").val(wuc); 89 {# $("#avatarPreview").load(function () {#} /*当图片加载后释放内存空间，但在jQuery3.2.1中会报错。浏览器关闭后也会自动释放*/ 90 {# window.URL.revokeObjectURL(wuc);#} 91 {# })#} 92 }) 93 } 94 95 </script> 96 </html>
视图函数
1 def register(request): 2 """注册 3 :param request 4 :return""" 5 if request.method == ‘GET‘: 6 return render(request,‘register.html‘) 7 8 def avatar_reg(request): 9 """ 10 :param request: (avatar头像对象) 11 :return: 12 """ 13 file_obj = request.FILES.get(‘avatar‘) 14 file_path = os.path.join(‘static/img‘,file_obj.name) 15 with open(file_path,‘wb‘) as f: 16 for chunk in file_obj.chunks(): 17 f.write(chunk) 18 print file_path 19 return HttpResponse(file_path)
路由系统 url.py
1 from django.conf.urls import url 2 from django.contrib import admin 3 from app_boke import views 4 urlpatterns = [ 5 url(r‘^admin/‘, admin.site.urls), 6 url(r‘^all/(?P<url_id>\d+)/‘, views.test),#正则p是大写，页面的参数和type_id组成键值对穿个函数中的变量kwargs 7 url(r‘^$‘, views.test), #默认输入域名或ip到达首页,上下兼容,必须加斜杠或者终止符不然可能跟其他的url有路径冲突(这种匹配追号写到地下，匹配是从上往下) 8 url(r‘^login/‘, views.login), 9 url(r‘^ajax_login/‘, views.ajax_login), 10 url(r‘^login1/‘, views.login1), 11 url(r‘^index/‘, views.index), 12 url(r‘^check_code/‘, views.check_code), 13 url(r‘^register/‘, views.register), 14 url(r‘^avatar_load/‘, views.avatar_reg), 15 ]
Form表单组件出现的错误信息
{ __all__:[错误1,错误2]， 整体共有的错误 user:[错误1，错误2]， password:[错误1,错误2], } #获取整体。共有错误信息 -后台 对象的errors属性 print(obj.errors[‘__all__‘])或者 #参考源码 print(obj.errors[‘NON_FIELD_ERRORS‘]) -模板（前端） {{obj,non_filed_errors}} 特殊
