我有一个控制器。有两个功能。现在我想从一个函数到另一个函数获取变量（它是随机字符串）值，并将此值打印到Route（url）中。
控制器：
class PrizeCalculateController extends Controller
{
public function calculatePrize($id, $randomStr=0)
{
$randomStr = str_random(5);
return view('pages.pageWaiting', ['res' => $res, 'randomStr' => $randomStr]);
}
public function showPrizePage($id, $randomStr=0)
{
//get random string from calculatePrize function
$getStr = PrizeCalculateController::calculatePrize($randomStr);
return view('pages.prizesDetails', ['res' => $id, 'getStr' => $getStr]);
}
}
我试图以这种方式从calculatePrize函数到showPrizePage函数获取随机字符串：
$getStr = PrizeCalculateController::calculatePrize($randomStr);
如果我dd($getStr)，那么我得到null。现在我如何从calculatePrize函数到showPrizePage函数获取此变量。
想要路线：
Route::get('/prize/{getStr}','PrizeCalculateController@showPrizePage');
答案 0 :(得分：1)
你应该试试这个：
use Illuminate\Http\Request;
use Session;
public function calculatePrize($id, $randomStr=0)
{
$randomStr = str_random(5);
Session::set('randomString', $randomStr);
return view('pages.pageWaiting', ['res' => $res, 'randomStr' => $randomStr]);
}
public function showPrizePage($id,$randomStr=0)
{
if(Session::has('randomString')) {
$randomStr = Session::get('randomString');
} else {
$randomStr = 0;
}
$getStr = PrizeCalculateController::calculatePrize($randomStr);
return view('pages.prizesDetails', ['res' => $id, 'getStr' => $getStr]);
}
答案 1 :(得分：0)
public class ShowSingleRecordActivity extends AppCompatActivity {
HttpParse httpParse = new HttpParse();
ProgressDialog pDialog;
// Http Url For Filter Student Data from Id Sent from previous activity.
String HttpURL = "http://192.168.137.1/namayeshgah/FilterStudentData.php";
// Http URL for delete Already Open Student Record.
String HttpUrlDeleteRecord = "http://192.168.137.1/namayeshgah/DeleteStudent.php";
String finalResult ;
HashMap<String,String> hashMap = new HashMap<>();
String ParseResult ;
HashMap<String,String> ResultHash = new HashMap<>();
String FinalJSonObject ;
TextView COMPANY,NAME,FAMILY,GENDER,EMAIL1,EMAIL2,PHONE,FAX,TELLFAX,MOBILE;
String CompanyHolder ,NameHolder,FamilyHolder,GenderHolder,Email1Holder,Email2Holder,PhoneHolder,FaxHolder,TellfaxHolder,MobileHolder;
Button UpdateButton, DeleteButton;
String TempItem;
ProgressDialog progressDialog2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_show_single_record);
COMPANY = (TextView)findViewById(R.id.ncompany);
NAME = (TextView)findViewById(R.id.nname);
FAMILY=(TextView)findViewById(R.id.nfamily);
GENDER =(TextView)findViewById(R.id.ngender);
EMAIL1= (TextView)findViewById(R.id.nemail1);
EMAIL2= (TextView)findViewById(R.id.nemail2);
PHONE= (TextView)findViewById(R.id.nphone);
FAX = (TextView)findViewById(R.id.nfax);
TELLFAX = (TextView)findViewById(R.id.ntellfax);
MOBILE = (TextView)findViewById(R.id.nmobile);
UpdateButton = (Button)findViewById(R.id.buttonUpdate);
DeleteButton = (Button)findViewById(R.id.buttonDelete);
//Receiving the ListView Clicked item value send by previous activity.
TempItem = getIntent().getExtra("ID");
System.out.println("TempItem=============>"+TempItem )
//Calling method to filter Student Record and open selected record.
if(null != TempItem){
HttpWebCall(TempItem);
}else{
Toast.makeText(context, "Item ID is not get from list", Toast.LENGTH_SHORT).show();
}
UpdateButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(ShowSingleRecordActivity.this,UpdateActivity.class);
// Sending Student Id, Name, Number and Class to next UpdateActivity.
intent.putExtra("Id", TempItem);
intent.putExtra("company",CompanyHolder );
intent.putExtra("name", NameHolder);
intent.putExtra("family",FamilyHolder );
intent.putExtra("gender",GenderHolder );
intent.putExtra("email1",Email1Holder );
intent.putExtra("email2",Email2Holder );
intent.putExtra("phone",PhoneHolder );
intent.putExtra("fax",FaxHolder );
intent.putExtra("tellfax",TellfaxHolder );
intent.putExtra("mobile",MobileHolder );
startActivity(intent);
// Finishing current activity after opening next activity.
finish();
}
});
// Add Click listener on Delete button.
DeleteButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// Calling Student delete method to delete current record using Student ID.
StudentDelete(TempItem);
}
});
}
// Method to Delete Student Record
public void StudentDelete(final String StudentID) {
class StudentDeleteClass extends AsyncTask<String, Void, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog2 = ProgressDialog.show(ShowSingleRecordActivity.this, "Loading Data", null, true, true);
}
@Override
protected void onPostExecute(String httpResponseMsg) {
super.onPostExecute(httpResponseMsg);
progressDialog2.dismiss();
Toast.makeText(ShowSingleRecordActivity.this, httpResponseMsg.toString(), Toast.LENGTH_LONG).show();
finish();
}
@Override
protected String doInBackground(String... params) {
// Sending STUDENT id.
hashMap.put("StudentID", params[0]);
finalResult = httpParse.postRequest(hashMap, HttpUrlDeleteRecord);
return finalResult;
}
}
StudentDeleteClass studentDeleteClass = new StudentDeleteClass();
studentDeleteClass.execute(StudentID);
}
//Method to show current record Current Selected Record
public void HttpWebCall(final String PreviousListViewClickedItem){
class HttpWebCallFunction extends AsyncTask<String,Void,String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = ProgressDialog.show(ShowSingleRecordActivity.this,"Loading Data",null,true,true);
}
@Override
protected void onPostExecute(String httpResponseMsg) {
super.onPostExecute(httpResponseMsg);
pDialog.dismiss();
//Storing Complete JSon Object into String Variable.
FinalJSonObject = httpResponseMsg ;
//Parsing the Stored JSOn String to GetHttpResponse Method.
new GetHttpResponse(ShowSingleRecordActivity.this).execute();
}
@Override
protected String doInBackground(String... params) {
ResultHash.put("StudentID",params[0]);
ParseResult = httpParse.postRequest(ResultHash, HttpURL);
return ParseResult;
}
}
HttpWebCallFunction httpWebCallFunction = new HttpWebCallFunction();
httpWebCallFunction.execute(PreviousListViewClickedItem);
}
// Parsing Complete JSON Object.
private class GetHttpResponse extends AsyncTask<Void, Void, Void>
{
public Context context;
public GetHttpResponse(Context context)
{
this.context = context;
}
@Override
protected void onPreExecute()
{
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... arg0)
{
try
{
if(FinalJSonObject != null)
{
JSONArray jsonArray = null;
try {
jsonArray = new JSONArray(FinalJSonObject);
JSONObject jsonObject;
for(int i=0; i<jsonArray.length(); i++)
{
jsonObject = jsonArray.getJSONObject(i);
// Storing Student Name, Phone Number, Class into Variables.
CompanyHolder = jsonObject.getString("company");
NameHolder = jsonObject.getString("name");
FamilyHolder= jsonObject.getString("family");
GenderHolder= jsonObject.getString("gender");
Email1Holder = jsonObject.getString("email1");
Email2Holder = jsonObject.getString("email2");
PhoneHolder = jsonObject.getString("phone");
FaxHolder = jsonObject.getString("fax");
TellfaxHolder = jsonObject.getString("tellfax");
MobileHolder = jsonObject.getString("mobile");
}
}
catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result)
{
// Setting Student Name, Phone Number, Class into TextView after done all process .
COMPANY.setText(CompanyHolder);
NAME.setText(NameHolder);
FAMILY.setText(FamilyHolder);
GENDER.setText(GenderHolder);
EMAIL1.setText(Email1Holder);
EMAIL2.setText(Email2Holder);
PHONE.setText(PhoneHolder);
FAX.setText(FaxHolder);
TELLFAX.setText(TellfaxHolder);
MOBILE.setText(MobileHolder);
}
}
试试这个希望它可以帮到你。如果有任何问题，请告诉我。