See also questions close to this topic

• Php add contents in the page

  i've one question about my page. I want that any user logged in, can add his content in the page (like on ebay you can add your product that you want to sell) but i don't know how i can do it. Could someone help me? Thanks.
• Parse JsonArray with request to php

  I'm trying to parse a JsonArray that i'm getting form my php, the php should send a Json with data from user logged in the app, but i'm getting this exception D/ContentValues: ERROR RESPUESTA en JSON: org.json.JSONException: Value [] of type org.json.JSONArray cannot be converted to JSONObject.

  I don't have any idea how make it works, I already searched many ways but nothing works

  This is my activity that show the list:

      public class MainLista extends AppCompatActivity {
  
      TextView txt1;
      ListView listaPerfil;
      ArrayAdapter adapter;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main_lista);
  
          listaPerfil = findViewById(R.id.listaPerfil);
          txt1 = findViewById(R.id.txt1);
  
          adapter = new AdaptadorDatos(this);
          listaPerfil.setAdapter(adapter);
  
      }
  }
  

  Adapter class :

  public class AdaptadorDatos extends ArrayAdapter {
  
      private RequestQueue requestQueue;
      JsonObjectRequest jsArrayRequest;
      private static final String LINK = "https://viavel.com.mx/pruebas/PHPRicardo/ejemplomostrar.php";
      List<Datos> items;
  
      TextView txtNombre;
  
      public AdaptadorDatos(Context context) {
          super(context, 0);
  
          requestQueue = Volley.newRequestQueue(context);
  
          jsArrayRequest = new JsonObjectRequest(Request.Method.GET, LINK, null, new Response.Listener<JSONObject>() {
              @Override
              public void onResponse(JSONObject response) {
                  items = parseJson(response);
                  notifyDataSetChanged();
              }
          }, new Response.ErrorListener() {
              @Override
              public void onErrorResponse(VolleyError error) {
                  Log.d(TAG,"ERROR RESPUESTA en JSON: " + error.getMessage());
              }
          }) {
              @Override
              protected Map<String, String> getParams() {
  
                  Map<String, String> params = new Hashtable<>();
                  params.put("email", Globales.USER_EMAIL);
                  params.put("contrasena", Globales.USER_PASS);
                  return params;
  
              }
          };
          requestQueue.add(jsArrayRequest);
      }
  
      @Override
      public int getCount() {
          return items != null ? items.size() : 0;
      }
  
      @Override
      public View getView(int position, View convertView, ViewGroup parent) {
  
          //OBTENER INSTANCIA DEL INFLATER
          LayoutInflater inflater = LayoutInflater.from(parent.getContext());
  
          //GUARDAR REFERENCIA DEL VIEW
          View view;
  
          //COMPROBAR SI EXISTE Y SI NO CREARLO
          view = null == convertView ? inflater.inflate(R.layout.item_lista, parent, false) : convertView;
  
          Datos item = items.get(position);
  
          //OBTENER INSTANCIA DE ELEMENTOS
          txtNombre         = view.findViewById(R.id.txtNombre);
  
          txtNombre.setText(item.getNombre());
  
          return view;
      }
  
      public List<Datos> parseJson(JSONObject jsonObject) {
          List<Datos> dato = new ArrayList<>();
          JSONArray jsonArray;
  
          try {
              jsonArray = jsonObject.getJSONArray("items");
  
              for (int i = 0; i <jsonArray.length(); i++) {
                  try{
                      JSONObject objeto = jsonArray.getJSONObject(i);
  
                      Datos datos = new Datos(
                              objeto.getString("nombre"));
                      dato.add(datos);
                  } catch (JSONException e) {
                      Log.e(TAG, "ERROR DE PARSING " + e.getMessage());
                  }
              }
          } catch (JSONException e) {
              e.printStackTrace();
          }
          return dato;
      }
  }
  

  Datos class:

  public class Datos {
      private String nombre;
      private String apellido;
      private String telefono;
      private String email;
      private String nacimiento;
      private String imagen;
      private String contrasena;
  
      public Datos() {
  
      }
  
      public Datos(String nombre/* String apellido, String telefono, String email, String nacimiento, String imagen, String contrasena*/) {
          this.nombre     = nombre;
        /*  this.apellido   = apellido;
          this.telefono   = telefono;
          this.email      = email;
          this.nacimiento = nacimiento;
          this.imagen     = imagen;
          this.contrasena = contrasena;*/
      }
  
      public String getNombre() {
          return nombre;
      }
      public void setNombre(String nombre) {
          this.nombre = nombre;
      }
  
   /*   public String getApellido() {
          return apellido;
      }
      public void setApellido(String apellido) {
          this.apellido = apellido;
      }
  
      public String getTelefono() {
          return telefono;
      }
      public void setTelefono(String telefono) {
          this.telefono = telefono;
      }
  
      public String getEmail() {
          return email;
      }
      public void setEmail(String email) {
          this.email = email;
      }
  
      public String getNacimiento() {
          return nacimiento;
      }
      public void setNacimiento(String nacimiento) {
          this.nacimiento = nacimiento;
      }
  
      public String getImagen() {
          return imagen;
      }
      public void setImagen(String imagen) {
          this.imagen = imagen;
      }
  
      public  String getContrasena() {
          return  contrasena;
      }
      public void setContrasena(String contrasena) {
          this.contrasena = contrasena;
      }*/
  }
  

  the Json obtained from the php:

  [{"nombre":"Fernando","apellido":"Villarreal","telefono1":"8672554040","email":"ricardito@gmail.com","fechanacimiento":"2021-02-11","contrasena":"12345678","imagen":"https:**********/FP-aYRsz-891.png"}]
  

  hope can you explain
• Plotting grain size distribution plot in excel

  I have one question about plotting 4 axis grain size distribution chart. would you please let me know how can I plot one chart in excel? Thank you in advance for your help.

  Kind regards, Nastaran
• Trouble importing hdf5 file using VScode with python 3.7 from anaconda3 distribution (Windows)

  I am trying to import two hdf5 files. dataFolder contains the file path. I am using a conda venvvirtual environment in VScode. I have installed the same software via the exact same way on another computer and it works fine. The code I am trying to use is:

  trainData = pd.read_hdf(dataFolder+"dftrain.h5").values
  trainData = np.array(trainData)
  
  validData = pd.read_hdf(dataFolder+"dfvalid.h5").values
  validData = np.array(validData)
  
  nTrain = trainData.shape[0]
  nValid = validData.shape[0]
  

  I have tried to conda install pytables and it shows it is already installed. (Checked also with conda list and its there: pytables 3.6.1 py38ha5be198_0

  PS D:\###\####\MLPM> conda install pytables
  Collecting package metadata (current_repodata.json): done
  Solving environment: done
  
  # All requested packages already installed.
  

  I get the following traceback, stating that I have to install tables at the end:

  ---------------------------------------------------------------------------
  ImportError                               Traceback (most recent call last)
  <ipython-input-5-421c5198a2e1> in <module>
        1 dataFolder = "D:/Master/ETH Spring2021/MLPM/"
        2 #C:/Users/gfrusque/Spyder_DataExploration/
  ----> 3 trainData = pd.read_hdf(dataFolder+"dftrain.h5").values
        4 trainData = np.array(trainData)
        5 
  
  ~\anaconda3\envs\myenv\lib\site-packages\pandas\io\pytables.py in read_hdf(path_or_buf, key, mode, errors, where, start, stop, columns, iterator, chunksize, **kwargs)
      397             raise FileNotFoundError(f"File {path_or_buf} does not exist")
      398 
  --> 399         store = HDFStore(path_or_buf, mode=mode, errors=errors, **kwargs)
      400         # can't auto open/close if we are using an iterator
      401         # so delegate to the iterator
  
  ~\anaconda3\envs\myenv\lib\site-packages\pandas\io\pytables.py in __init__(self, path, mode, complevel, complib, fletcher32, **kwargs)
      540             raise ValueError("format is not a defined argument for HDFStore")
      541 
  --> 542         tables = import_optional_dependency("tables")
      543 
      544         if complib is not None and complib not in tables.filters.all_complibs:
  
  ~\anaconda3\envs\myenv\lib\site-packages\pandas\compat\_optional.py in import_optional_dependency(name, extra, raise_on_missing, on_version)
      107     except ImportError:
      108         if raise_on_missing:
  --> 109             raise ImportError(msg) from None
      110         else:
      111             return None
  
  ImportError: Missing optional dependency 'tables'.  Use pip or conda to install tables.
  

  I have tried these: https://anaconda.org/ska/tables Missing optional dependency 'tables'. In pandas to_hdf ImportError HDFStore requires PyTables No module named tables

  conda 4.9.2 Another weird thing is this:

  PS D:\Master\ETH Spring2021\MLPM> python --version
  Python 3.8.5
  

  while the version indicated on the bottom right is Python 3.7.10 64-bit ('myenv':conda)
• How to import javascript resource into thymeleaf template without Spring?

  I use thymeleaf WITHOUT Spring. Configuration looks

  @WebListener
  public class ThymeleafConfig implements ServletContextListener {
  
  public void contextInitialized(ServletContextEvent sce) {
      TemplateEngine engine = templateEngine(sce.getServletContext());
      TemplateEngineUtil.storeTemplateEngine(sce.getServletContext(), engine);
  }
  
  private TemplateEngine templateEngine(ServletContext servletContext) {
      TemplateEngine engine = new TemplateEngine();
      engine.setTemplateResolver(templateResolver(servletContext));
      return engine;
  }
  
  private ITemplateResolver templateResolver(ServletContext servletContext) {
      ServletContextTemplateResolver resolver = new ServletContextTemplateResolver(servletContext);
      resolver.setPrefix("/WEB-INF/templates/");
      resolver.setTemplateMode(TemplateMode.HTML);
      return resolver;
  }
  

  where I specify path /src/main/webapp/WEB-INF/templates as prefix /WEB-INF/templates/ for my index.html template. It works. Now I am trying to add javascrpt static resource that is located at /src/main/webapp/WEB-INF/js, so that I can import it in template, like

  <script src="example.js" type="text/javascript"></script>
  

  OR

  <script th:src="@{/example.js}" type="text/javascript"></script>
  

  How can I add javascript resource? All documentation and examples I have found are for the combination Spring+thymeleaf.
• How to import library modules to my namespace from another module?

  I have written this function inside my utils module

  def megaimport(library_name, skip_modules = []):
      skip_modules.extend(["sys", "os", "dir_path"])
      exec(f"import {library_name}")
      for module in dir(eval(library_name)):
          if module.startswith("__") == False and module not in skip_modules:
              exec(f"from {library_name}.{module} import *", globals(), locals())
  

  What I am trying to achieve is to import all functions to my namespace from any library with the following structure:

  library:
  - module1
     - function_1_2
     - function_2_2
  
  - module2
     - function_2_1
     - function_2_2
  
  

  just by running in my notebook.ipynb:

  from utils import megaimport
  megaimport("library")
  
  function_1_2()
  function_2_1()
  ... etc
  

  The idea is to dynamically call from library.module1 import *for every module in a library. When I do this the function runs without errors but I when I call the functions they have not been imported properly. However, if I define the function in my code and run it it works as expected.

  How can I import all the functions into my current namespace?

  I am aware that importing everything like this is bad practice but for me it is convenient when working with jupyter notebooks.

  My notebook.ipynb and utils.py live in the same directory.
• python get module name that declared a variable

  so classes in python can tell you where they were defined:

  # module a.py
  class Something:
    pass
  

  from a import SomeClass
  
  print(f"name: {SomeClass.__name__}, module: {SomeClass.__module__}")
  # name: SomeClass, module: a
  

  I want to know if it is possible to get the module that declared a variable, rather than a class.

  # module a.py
  SOME_LIST = [1,2,3]
  

  from a import SOME_LIST
  
  # something like this:
  print(SOME_LIST.__module__)
  # Traceback (most recent call last):
  #   File "b.py", line 3, in <module>
  #     print(SOME_LIST.__module__)
  # AttributeError: 'list' object has no attribute '__module__'
  

  The use case is that I need to crawl a complicated structure of nested classes and lists across many files and I need to generate namespaces for classes and variables found in this structure.
• Error: ENOENT: no such file or directory, scandir './data' but directory exists

  I am trying to test a node module before I publish it. However, when I npm install <path to module> and try requiring the module + running the main function, it throws this error:

  Error: ENOENT: no such file or directory, scandir './data'
  [90m    at Object.readdirSync (node:fs:1044:3)[39m
      at Object.<anonymous> (C:\Users\divinelemon\Downloads\Programming\Node.js\test-main\index.js:11:22)
  [90m    at Module._compile (node:internal/modules/cjs/loader:1108:14)[39m
  [90m    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1137:10)[39m
  [90m    at Module.load (node:internal/modules/cjs/loader:973:32)[39m
  [90m    at Function.Module._load (node:internal/modules/cjs/loader:813:14)[39m
  [90m    at Module.require (node:internal/modules/cjs/loader:997:19)[39m
  [90m    at require (node:internal/modules/cjs/helpers:92:18)[39m
      at Object.<anonymous> (C:\Users\divinelemon\Downloads\Programming\Node.js\test\index.js:1:25)
  [90m    at Module._compile (node:internal/modules/cjs/loader:1108:14)[39m {
    errno: [33m-4058[39m,
    syscall: [32m'scandir'[39m,
    code: [32m'ENOENT'[39m,
    path: [32m'./data'[39m
  }
  

  However, this data folder exists, and I verified that the module worked when I ran a test in test-main (the module I'm trying to export).

  I fixed this error by using this path instead of ./data:

  ./node_modules/random-usernames/data
  

  But it seems pretty hacky, and I am unsure whether or not this is the correct way to fix this.

  Help appreciated, Thanks
• Looking for a replacement to link-module-alias npm package

  As per the title, I'm looking to deprecate the usage of link-module-alias in my project due to some issues with this package. I was wondering if you guys know any other good alternative to it. I tried better-module-alias, but I couldn't make it work. Plus I don't like the idea of having to import require('better-module-alias')(__dirname) everywhere where I wish to use it with Node files.

  I'm not sure if I should use Webpack Alias instead?

  Thanks in advance!
• Namespace vs global in PHP Functions?

  I've got a $db variable (and others) in my global config and I've seen some sample code recently like:

  function getInfo(\My\Namespace\DB $db) {...} and then calling getInfo($db);

  but I'm used to just doing:

  function getInfo() {
   global $db;
   ...
  }
  

  What's the difference and is one better/preferred/best practice compared to the other now?

  Thanks.
• Use multiple namespaces in PHP

  I am new to the concept of namespaces and I am reading about them.

  This guide by David B Hayes has been very insightful.

  But everywhere I read it mainly focuses on creating the namespaces but not about using them.

  Suppose I want to use two libraries called Dompdf and Stripe.

  If I do:

  use Dompdf\Dompdf;
  

  • What happens if I also want to use Stripe or whatever other library or libraries?

  • Won't the namespaces collide?

  • And what if one library is namespaced and the other or others are not?

  In the case of Stripe (github.com/stripe/stripe-php/blob/master/lib/Stripe.php) it "lives" in the Stripe namespace. Which would imply that I have to write

  use Stripe;
  

  before using it.

  I made this example to try to understand it better:

  namespace cat;
  class Classy{
      static function says() {echo 'meoow';}
  }
  namespace dog;
  class Classy{
      static function says() {echo 'ruff';}
  }  
  
  use cat;
  
  echo Classy::says(), "\n";
  

  But it outputs the string "Ruff", which means the use cat is apparently doing nothing.
• run container with containerd's ctr by means of uidmap to map to non-root user on the host

  To better understand how to use the --uidmap with ctr, I've created a test container by means of the following steps. The containerd version is 1.4.3.

  Build and Run Container:

  1. Build Dockerfile

     $ cat Dockerfile
     FROM alpine
     ENTRYPOINT ["/bin/sh"]
     

     with

     $ docker build -t test .
     Sending build context to Docker daemon  143.1MB
     Step 1/2 : FROM alpine                         
      ---> d6e46aa2470d                             
     Step 2/2 : ENTRYPOINT ["/bin/sh"]              
      ---> Running in 560b09f9b287                  
     Removing intermediate container 560b09f9b287   
      ---> 8506bfeab109                             
     Successfully built 8506bfeab109                
     Successfully tagged test:latest                
     

  2. Save the image as tar ball

     $ docker save test > test.tar
     

  3. Import it with containerd's ctr

     $ sudo ctr i import test.tar
     unpacking docker.io/library/test:latest (sha256:9f7dabf0e4feadbca9bdc180422a3f2cdd7b545445180a3c23de8129dc95f29b)...done
     

  4. Create and run the container

     $ sudo ctr run --uidmap 0:5000:4999 docker.io/library/test:latest test
     

     The uid map should map the container internal uid of 0 (root) to 5000 corresponding to ctr's manpage:

     --uidmap="": run inside a user namespace with the specified UID mapping range; specified with the format container-uid:host-uid:length

  Check UID in container and on host:

  Within the container:

  ps -eo ruser,rgroup,comm 
  RUSER    RGROUP   COMMAND
  root     root     sh     
  root     root     ps     
  

  On the host:

  $ ps -eo uid,gid,cmd | grep /bin/sh
    126   128 /bin/sh /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/unity-greeter
      0     0 /bin/sh
  

  Issue

  It seems to not work, /bin/sh runs as root (uid=0) within the container as well as on the host.
• Code-coverage failing with count(): Parameter must be an array

  I am using PHP 7.2.33 with Xdebug 2.9.8 and PHPUnit 6.0.8. When I try to generate a code-coverage report using

  phpunit -d xdebug.profiler_enable=On --coverage-html tests/_report/ --filter=NotifierTest
  

  Thats the output:

  Time: 5.18 seconds, Memory: 52.25MB
  
  OK (1 test, 1 assertion)
  
  Generating code coverage report in HTML format ...count(): Parameter must be an array or an object that implements Countable
  

  I found that was a know error and has been fixed in 5.2.3. However, I am using already PHPUnit 6.0.8, so that cannot be the problem.

  Any ideas what could cause this? How could I figure out, where this count comes from?
• call a class in last with phpunit

  I'm testing my app and I would like phpunit call a class at the end of the process and I don't know how to do. Any idea ? This is the class I want in last :

  class ExerciceTest extends WebTestCase
  {
      //user1
      const USER_ID_TEST = 2;
      const NEW_USER_ID = 5;
  
      
      /**
       * @test
       */
      public function it_is_not_display()
      {
          $client = static::createClient();
          $userRepo = static::$container->get(UserRepository::class);
  
          $testUser = $userRepo->find(self::NEW_USER_ID);
  
          $client->loginUser($testUser);
  
          $client->request(Request::METHOD_GET,'/'.$testUser->getSlug());
  
          $this->assertSelectorNotExists('a.add-exercice', 'error');
      }
  }
  
• Using Doctrine EntityManager inside PHPUnit test class

  I can not access my Doctrine EntityManager inside my PHPUnit test class. I really don't understand, and I'm not using Symfony.

  My UtilisateurService.php class :

  <?php 
  
  require_once './bootstrap.php';
  
  class UtilisateurServices{
      
      private Utilisateur $_user;
      
      /**
       * Constructeur de classe.
       * @param integer $id identifiant généré de l'utilisateur
       */
      public function __construct($id){      
          $userRepo = $entityManager->getRepository("Utilisateur");
          $this->_user = $userRepo->find($id);
      } ...
  

  My UtilisateurServiceTest.php :

  <?php
  
  class UtilisateurServicesTest extends \PHPUnit\Framework\TestCase{
  
      /**
       *
       * @var UtilisateurServices
       */
      private $utilisateurServices;
          
      /**
       * Tests UtilisateurServices->getUtilisateur()
       */
      public function testGetUtilisateur()
      {
          
          $id = 1;
          $this->utilisateurServices = new UtilisateurServices($id);
          assert($this->utilisateurServices->getUtilisateur()->getId(), $id);
      }...
  

  My Bootstrap.php file :

  <?php
  // bootstrap
  namespace DPTrace\Bootstrap;
  
  require_once join(DIRECTORY_SEPARATOR, [__DIR__, 'vendor', 'autoload.php']);
  
  use Doctrine\ORM\tools\Setup;
  use Doctrine\ORM\EntityManager;
  
  $entitiesPath = [
      join(DIRECTORY_SEPARATOR, [__DIR__, "src\\entities"])
  ];
  
  $dbParams = array(
      'driver'    =>  'pdo_mysql',
      'host'      =>  'localhost',
      'user'      =>  'DPTrace_test',
      'password'  =>  'test',
      'dbname'    =>  'DPTrace',
      'charset'   =>  'utf8'
  );
  
  $isDevMode = true;
  $proxyDir = null;
  $cache = null;
  $useSimpleAnnotationReader = false;
  
  $config = Setup::createAnnotationMetadataConfiguration($entitiesPath, $isDevMode, $proxyDir, $cache, $useSimpleAnnotationReader);
  
  $entityManager = EntityManager::create($dbParams, $config);
  
  return $entityManager;
  
  ?>
  

  The error message when I execute vendor\bin\phpunit tests/UtilisateurServicesTest.php -c tests/phpunit.xml

  1. UtilisateurServicesTest::testGetUtilisateur Undefined variable: entityManager

  C:\Users\gillian\git\repo\DPTrace\src\services\UtilisateurServices.php:20 C:\Users\gillian\git\repo\DPTrace\tests\UtilisateurServicesTest.php:26

  Thank you a lot for your help !