我无法从我的代码中得到想要的结果

Question

我需要使用 google 可视化 api 从 mysql 数据库创建 dataTable。所以我这样做：

try {

  $rez = $db->prepare("SELECT naziv FROM track_aktivnosti WHERE id_akt = :id_akt AND prvi=1 AND user_id=:user_id");
  $rez->execute(array(':id_akt' => $_POST['id_akt'], ':user_id' => $user_id));

  $kol = $rez->fetchAll();
  $rows = array();
  $rows1 = array();
  $table = array();
  $table = array();

  $rows[] = array('label' => 'Datum', 'type' => 'string');

  foreach ($kol as $r) {
    $rows[] = array('label' => (string) $r['naziv'], 'type' => 'string');
  }

  $table['cols'] = $rows;
  // convert data into JSON format
  $result = $db->prepare("SELECT datum FROM track_aktivnosti 
                                WHERE id_akt = :id_akt 
                                AND user_id=:user_id 
                                GROUP BY datum ORDER BY datum");

  $result->execute(array(':id_akt' => $_POST['id_akt'], ':user_id' => $user_id));
  $dates = $result->fetchAll();
  $final_result = array();

  $rows1 = array();
  foreach ($dates as $date) {

    $result = $db->prepare("SELECT vrednost, naziv 
                                    FROM track_aktivnosti 
                                    WHERE id_akt = :id_akt 
                                       AND datum = :datum  
                                       AND user_id= :user_id");

    $result->execute(array(':id_akt' => $_POST['id_akt'],
        ':datum' => $date['datum'],
        ':user_id' => $user_id));
    $m = array(array('v' => $date['datum']));
    foreach ($result as $r) {
      $m[] = array('v' => (int) $r['vrednost']);
    }
    $rows1[] = array('c' => $m);

    $table['rows'] = $rows1;
  }
} catch (PDOException $e) {
  echo 'ERROR: ' . $e->getMessage();
}
echo json_encode($table);

所以一切都很好，但是这段代码改变了行值......正如你从 mysql 数据库和前端 dataTable 中看到的那样：所以 DataTable 是：（对于 id_akt = 82）

而mysql数据库是：

所以你可以在数据表中看到我得到的 fdfdfd 值 56 而不是 76 和类似的......我该如何解决这个问题？

使用 JS 代码更新：

function drawTroskovnik() {
  var cssClassNames = {
    'headerRow': 'zaglavlje',
    'tableRow': 'red',
    'oddTableRow': 'red',
    'selectedTableRow': 'orange-background large-font',
    'hoverTableRow': 'prekoreda',
    'headerCell': 'gold-border',
    'tableCell': 'cell',
    'rowNumberCell': 'underline-blue-font'
  };

  // Create and populate the data table.
  var JSONObject = $.ajax({
    url: 'getTroskovnik.php', // make this url point to the data file
    dataType: 'json',
    data: {id_akt: ajdi},
    async: false,
    type: 'POST',
  }).responseText;

  var data = new google.visualization.DataTable(JSONObject, 0.5);

  for (var y = 0, maxrows = data.getNumberOfRows(); y < maxrows; y++) {
    for (var x = 1, maxcols = data.getNumberOfColumns(); x < maxcols; x++) {
      data.setValue(y, x, '<input vr="' + data.getValue(y, 0) + '" kol="' + data.getColumnLabel(x) + '" class="form-control costRedovi" value="' + data.getValue(y, x) + '">');
    }
  }
  for (var y = 0, maxrows = data.getNumberOfRows(); y < maxrows; y++) {
    data.setValue(y, 0, '<input class="span2 form-control" id="pocetak1" size="16" type="text" value="' + data.getValue(y, 0) + '" readonly>');
  }

  data.addColumn('string', '');
  for (var y = 0, maxrows = data.getNumberOfRows(); y < maxrows; y++) {
    var mc = data.getNumberOfColumns() - 1;
    data.setValue(y, mc, '<div data-toggle="tooltip" data-placement="top" title="Delete this day data"><i class="fa fa-trash-o" ></i></div>');
  }

  var table = new google.visualization.Table(document.getElementById('tpltroskovnik'));
  new google.visualization.events.addListener(table, 'ready', function() {
    $(".costRedovi").focusout(function() {
      var vrednost = $(this).val();
      var datum = $(this).attr('vr');
      var tabela = $(this).attr('kol');
      console.log(datum + " " + tabela + " " + vrednost);
      $.ajax({
        url: "updateCost.php",
        type: "POST",
        async: true,
        data: {ajdi: ajdi, datum: datum, tabela: tabela, vrednost: vrednost}, //your form data to post goes here as a json object
        dataType: "html",
        success: function(data) {
          console.log(data);
        },
      });
    });
  });

  table.draw(data, {'allowHtml': true, cssClassNames: {
      'headerRow': 'zaglavlje',
      'tableRow': 'red',
      'oddTableRow': 'red',
      'selectedTableRow': 'orange-background large-font',
      'hoverTableRow': 'prekoreda',
      'headerCell': 'gold-border',
      'tableCell': 'cell',
      'rowNumberCell': 'underline-blue-font'}
  });
};

Answer 1

在您提供的 PHP 代码中，列名和行值之间没有关联。因此，哪些值落在哪些列中取决于从数据库中提取数据的顺序，这可能基于性能或插入顺序，并且可能因查询而异。为了获得可预测的顺序，您需要在查询中指定您希望拉取的顺序。需要对齐的两个查询是：拉取名称的查询和拉取值的查询。

.

缺乏可预测的订单：

$rez = $db->prepare("SELECT naziv FROM track_aktivnosti WHERE id_akt = :id_akt AND prvi=1 AND user_id=:user_id");

...

$result = $db->prepare("SELECT vrednost, naziv FROM track_aktivnosti WHERE id_akt = :id_akt AND datum = :datum AND user_id= :user_id");

.

在每一个的末尾添加ORDER BY naziv 以将结果排序为可预测的对齐方式，然后将其正确加载到您的关联数组中，然后是 JSON 对象。

这是您的代码的调整版本，清理了一些其他非关键问题：

<?php

try {

    $res = $db->prepare('SELECT naziv FROM track_aktivnosti WHERE id_akt = :id_akt AND user_id = :user_id AND prvi = 1 ORDER BY naziv');
    $res->execute(array(':id_akt' => $_POST['id_akt'], ':user_id' => $user_id));
    $kol = $res->fetchAll();

    $rows = array();
    $table = array();

    $rows[] = array('label' => 'Datum', 'type' => 'string');

    foreach ($kol as $r) {
        $rows[] = array('label' => (string) $r['naziv'], 'type' => 'string');
    }

    $table['cols'] =  $rows;

    $res = $db->prepare('SELECT datum FROM track_aktivnosti WHERE id_akt = :id_akt AND user_id = :user_id GROUP BY datum ORDER BY datum');
    $res->execute(array(':id_akt' => $_POST['id_akt'], ':user_id' => $user_id));
    $dates = $res->fetchAll();

    $rows = array();

    foreach($dates as $date){

       $res = $db->prepare('SELECT vrednost FROM track_aktivnosti WHERE id_akt = :id_akt AND user_id = :user_id AND datum = :datum  ORDER BY naziv');
       $res->execute(array(':id_akt' => $_POST['id_akt'], ':user_id' => $user_id, ':datum' => $date['datum']));
       $vals = $res->fetchAll();

       $m = array( array( 'v' => $date['datum'] ) );

       foreach($vals as $r) {
           $m[] = array('v' => (int) $r['vrednost']);
       }
       $rows[] =  array('c' => $m);

       $table['rows'] = $rows;
    }

} catch(PDOException $e) {
    echo 'ERROR: ' . $e->getMessage();
}

echo json_encode($table);

?>