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iOS设备可以向Rails应用程序发送PUT请求吗?

[英]Can iOS devices send PUT requests to Rails apps?

我们已经多次尝试向我们的Rails服务器发送更新PUT请求,并且我们继续收到404“您正在寻找的页面不存在”

我们的更新方法非常简单(实际上是通用的rails)。

def update
@user = User.find(params[:id])

respond_to do |format|
  if @user.update_attributes(params[:user])
    format.html { redirect_to @user, notice: 'User was successfully updated.' }
    format.json { head :no_content }
  else
    format.html { render action: "edit" }
    format.json { render json: @user.errors, status: :unprocessable_entity }
  end
end

结束

当我从命令行运行CURL来测试更新方法时,它工作正常。 但是,当我在objective-c中尝试相同的方法时,它总是会导致404错误。

所以我的问题是:iOS设备可以使用NSURLConnection向服务器发送PUT请求还是未实现?

更新::

这不会更新数据库

NSString *dataString = @"user[first_name]=bob";
NSData *postBodyData = [NSData dataWithBytes: [dataString UTF8String] length:[dataString length]];
NSString *urlString = [NSString stringWithFormat:@"example.com/users/1.json"];
NSURL *fullURL = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:fullURL cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:20];
[request setHTTPMethod: @"PUT"];
[request setHTTPBody:postBodyData];
self.todoConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
receivedData = [NSMutableData data];

这会更新数据库

NSString *urlString = [NSString stringWithFormat:@"example.com/users/1.json?user[first_name]=bob"];
NSURL *fullURL = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:fullURL cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:20];
[request setHTTPMethod: @"PUT"];
self.todoConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
receivedData = [NSMutableData data];

实际上@ akshay1188有一个可行的解决方案,但我认为更优雅的方法是在请求中添加“application / x-www-form-urlencoded”内容类型:

[request setHTTPMethod:@"PUT"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];

您可以创建NSMutableURLRequest并设置HTTP方法:

- (void)setHTTPMethod:(NSString *)method

给它字符串@"PUT"

以下是如何从这样的请求创建NSURLConnection。

NSMutableURLRequest *myMutableRequest[[NSMutableURLRequest alloc] initWithURL:myURL];
[myMutableRequest setHTTPMethod:@"PUT"];
[NSURLConnection connectionWithRequest:myMutableRequest delegate:myDelegate];

将HTTP方法类型设置为@“POST”

并在请求体中添加一个参数:@“PUT”表示键@“_方法”

它应该工作。

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