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Django框架详细介绍---视图系统

只愿长相守 提交于 2020-01-02 21:33:41
Django视图系统 1.什么是视图   在Django中,一个视图函数/类,称为视图。实质就是一个用户自定义的简单函数,用来接收WEB请求并xing响应请求,响应的内容可以是一个HTML文件、重定向、一个文件、照片等。无论视图本身包含什么逻辑,都要返回响应。   一般的,视图函数一般存放于用户创建的APP目录下的views.py中。 2.视图种类   1)FBV   FBV(function base views),全称基于函数的视图,也就是在视图中使用函数处理请求, 函数内部再定义如何处理GET、POST等请求 urlpatterns = [# 班级列表 path('class_list/', views.class_list), # 创建班级 path('create_class/', views.create_class), ] def class_list(request): cla_list = models.Class.objects.all() return render(request, 'class_list.html', {'class_list': cla_list}) def create_class(request): if request.method == 'POST': # 获取班级名称 class_name = request.POST.get(

How to post image with fetch?

此生再无相见时 提交于 2020-01-02 16:18:12
问题 I just learning react and I create an gallery App, but I have problem with posting picture to API. The problem is that when I click on button ADD there's nothing happend just in console.log I get an error 500 . Here is my component with post request: class AddPhoto extends Component { constructor(props) { super(props); this.state = { modal: false, images: [], isLoading: false, error: null, }; this.toggle = this.toggle.bind(this); this.handleClick = this.handleClick.bind(this); this

sails.js Getting a POST payload with text/plain content type

♀尐吖头ヾ 提交于 2020-01-02 16:06:07
问题 I'm developing a sails.js (node.js framework based on express) aplication, which is going great but ]I can't solve this detail... I need to send POST requests cross domain from internet explorer 8 and 9. For that I'm forced to use xDomainRequest object, wich doesn't allow to set a Content type header. So, when the request gets to the server the content type is "text/plain", which doesn't fire the bodyParser express middleware, so my req.body is an empty object and I can't see the payload I'm

AngularJS POSTs empty requests?

假装没事ソ 提交于 2020-01-02 15:41:06
问题 I'm a newbie in AngularJS and I've faced an issue when I try to make a POST request with AngularJS and it POSTs no parameters with it. I use Sinatra as a RESTful interface. That's how my Sinatra backend looks: post '/layer/:layer_id' do @layer = PageLayer.where(id: params[:layer_id]).first @layer.content = params[:content] @layer.save end If try to POST with Postman chrome extension - it works! Sinatra saves the content properly. So I'm sure that the backend works as it should. That's how my

AngularJS POSTs empty requests?

天大地大妈咪最大 提交于 2020-01-02 15:39:32
问题 I'm a newbie in AngularJS and I've faced an issue when I try to make a POST request with AngularJS and it POSTs no parameters with it. I use Sinatra as a RESTful interface. That's how my Sinatra backend looks: post '/layer/:layer_id' do @layer = PageLayer.where(id: params[:layer_id]).first @layer.content = params[:content] @layer.save end If try to POST with Postman chrome extension - it works! Sinatra saves the content properly. So I'm sure that the backend works as it should. That's how my

AngularJS POSTs empty requests?

十年热恋 提交于 2020-01-02 15:39:17
问题 I'm a newbie in AngularJS and I've faced an issue when I try to make a POST request with AngularJS and it POSTs no parameters with it. I use Sinatra as a RESTful interface. That's how my Sinatra backend looks: post '/layer/:layer_id' do @layer = PageLayer.where(id: params[:layer_id]).first @layer.content = params[:content] @layer.save end If try to POST with Postman chrome extension - it works! Sinatra saves the content properly. So I'm sure that the backend works as it should. That's how my

Why is $_POST array empty in PHP after an a request with post data

不想你离开。 提交于 2020-01-02 15:29:43
问题 I make a post request to the the page getremote.php with post data but the $_POST array seems to be empty. Would be grateful if anyone can tell me what I've done wrong. The javascript code to make the request is var postdata = "Content-Type: application/x-www-form-urlencoded\n\nedits=" + this.createEditXMLtext(this.editXMLstruct); var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new

Calculating an oauth signature

。_饼干妹妹 提交于 2020-01-02 15:26:50
问题 I am trying something a little specific, namely trying to call a REST API. I have been following these instructions. I have been very careful to ensure that I am creating the "Signature base string" correctly. They define it to be created like this: (HTTP Method)&(Request URL)&(Normalized Parameters) You can double check if need be in my code, but I am very sure that it is fine. The problem that I am having is creating what they call the "oauth signature" and mine isn't matching theirs. They

GET与POST的区别

偶尔善良 提交于 2020-01-02 12:31:37
http的报文格式: 请求报文格式: 响应报文格式: GET与POST的区别: https://baijiahao.baidu.com/s?id=1626599028653203490&wfr=spider&for=pc https://blog.csdn.net/wx1528159409/article/details/83419666 https://www.cnblogs.com/williamjie/p/9099940.html https://www.cnblogs.com/ldq2016/p/9055933.html https://blog.csdn.net/a_fool_program_ape/article/details/81748544 来源: CSDN 作者: 七月听雪 链接: https://blog.csdn.net/qq_23262411/article/details/103800297

401 response when do a POST using scribe oauth java

风格不统一 提交于 2020-01-02 11:19:14
问题 This does NOT happen when I use it with a GET. i.e. this DOES NOT WORK: ProxyAuthenticator pa = new ProxyAuthenticator(); Authenticator.setDefault( pa ); OAuthService service = new ServiceBuilder().provider( TwitterApi.class ).apiKey( strAPIKey ).apiSecret( strAPISecret ).build(); Token requestToken = service.getRequestToken(); Scanner in = new Scanner( System.in ); Verifier verifier = new Verifier(in.nextLine()); String url = "http://api.twitter.com/1/statuses/update.json?status=helllllooooo