如何使用post方法在ROR的def create函数中从客户端获取数据

我正在努力解决这些问题，如何从客户端获取数据，如何在def create function中使用post方法，从客户端获取数据。 客户端编码是android，服务器端代码是ROR。

服务器端编码在ror

def create respond_to do |format| @post = Post.new(params[:post]) if @post.save flash[:notice] = "Prayer Successfully created." @posts = Post.paginate(page: params[:page],:per_page => 5) format.json{ render :json => @post, :status => :created } else flash[:notice] = "Error" @posts = Post.paginate(page: params[:page],:per_page => 5) format.json{ render :json => @post, :status => :created } end end end def create_a_post content = JSON.parse request.body.read @post = Post.new[:content] @post.save end 

在这里我创建一个新的动作作为抓取的create_a_post，但我觉得我们必须从def create函数本身获取，是什么代码需要获取数据。

如何使用def crate函数，从客户端获取数据

在这里，我还将提到我的客户端代码

 public class HomeLayoutActivity extends Activity implements OnClickListener{ private EditText value; private Button btn; private ProgressBar pb; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.home_layout); value=(EditText)findViewById(R.id.editText1); btn=(Button)findViewById(R.id.button1); pb=(ProgressBar)findViewById(R.id.progressBar1); pb.setVisibility(View.GONE); btn.setOnClickListener(this); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.home_layout, menu); return true; } public void onClick(View v) { // TODO Auto-generated method stub if(value.getText().toString().length()<1){ // out of range Toast.makeText(this, "please enter something", Toast.LENGTH_LONG).show(); }else{ pb.setVisibility(View.VISIBLE); new MyAsyncTask().execute(value.getText().toString()); } } private class MyAsyncTask extends AsyncTask{ @Override protected Double doInBackground(String... params) { // TODO Auto-generated method stub postData(params[0]); return null; } protected void onPostExecute(Double result){ pb.setVisibility(View.GONE); Toast.makeText(getApplicationContext(), "command sent", Toast.LENGTH_LONG).show(); } protected void onProgressUpdate(Integer... progress){ pb.setProgress(progress[0]); } public void postData(String valueIWantToSend) { // Create a new HttpClient and Post Header HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://floating-wildwood-1154.herokuapp.com/posts/create_a_post"); try { // Add your data List nameValuePairs = new ArrayList(); nameValuePairs.add(new BasicNameValuePair("content", valueIWantToSend)); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); httppost.setHeader("Content-Type", "application/json"); httppost.setHeader("Accept", "application/json"); // Execute HTTP Post Request HttpResponse response = httpclient.execute(httppost); } catch (ClientProtocolException e) { // TODO Auto-generated catch block } catch (IOException e) { // TODO Auto-generated catch block } } } }