Question

我有一个问题，如何在发送表单后获取数组元素。我的目标是保存由语言创建的元素。 $ _POST的返回并不清楚我是否正确保存了bd中的日期。

示例：

表格

def to_representation(self, value):
    lvalue = context.get('count', 0)
    lvalue += 1 
    context.update({'count': lvalue})
    serializer_data = SubTypeSerializer(value, context=context).data
    return serializer_data

class TypeSerializer(serializers.ModelSerializer):
    extends_type = RecursiveField(allow_null=True)
    def to_representation(self, instance):
        self.context.update({'count': 0})
        return super().to_representation(instance)

    class Meta:
        model = Type
        fields = '__all__'

class SubTypeSerializer(serializers.ModelSerializer):
    extends_type = RecursiveField(allow_null=True)

    class Meta:
        model = Type
        fields = '__all__'

此脚本允许在我单击某种语言时创建一个字段（例如）

 languages = 2; // en and fr

  for ($i=0, $n=sizeof($languages); $i<$n; $i++) {
    $content .= '
  <div class="col-md-12">
    <div class="form-group row">
       <div class="input-group input-group-option">
         <label for="lang" class="col-1 col-form-label">' . $OSCOM_Language->getImage($languages[$i]['code']) . '</label>
         ' . HTML::inputField('user_question[][' . $languages[$i]['id'] . ']', null, 'placeholder="Write a question"') . '
         <span class="input-group-addon input-group-addon-remove">
            <span>X</span>
         </span>
       </div>
    </div>
  </div>

发布结果

<script>
$(function(){
    $(document).on('focus', 'div.form-group-options div.input-group-option:last-child input', function(){
        var sInputGroupHtml = $(this).parent().html();
        var sInputGroupClasses = $(this).parent().attr('class');
        $(this).parent().parent().append('<div class="'+sInputGroupClasses+'">'+sInputGroupHtml+'</div>');
    });

    $(document).on('click', 'div.form-group-options .input-group-addon-remove', function(){
        $(this).parent().remove();
    });
});
</script>

以下答案，反应良好;

var_dump($_POST['user_question'])
        array(8) { 
    [0]=> array(1) { [1]=> string(9) "test_en_1" } 
    [1]=> array(1) { [1]=> string(9) "test_en_2" } 
    [2]=> array(1) { [1]=> string(9) "test_en_3" } 
    [3]=> array(1) { [1]=> string(0) "" } 
    [4]=> array(1) { [2]=> string(9) "test_fr_1" } 
    [5]=> array(1) { [2]=> string(9) "test_fr_2" } 
    [6]=> array(1) { [2]=> string(9) "test_fr_3" } 
    [7]=> array(1) { [2]=> string(0) "" } }

结果

  $N = sizeof($_POST['user_question']); // 4
  $M = sizeof($languages); // 2

  for ($i=0; $i<$N; $i++) {
    for ($j=0; $j<$M; $j++) {
      $language_id = $languages[$M]['id']+1;

      if (!is_null($_POST['user_question'][$i + $j * $N]) ) {

        $test = (bool)array_filter($_POST['user_question'][$i + $j * $N], create_function('$a','return preg_match("#\S#", $a);'));

       if ($test == true) {
        var_dump($_POST['user_question'][$i + $j * $N]);
        var_dump('<br>');
       }
      }
    }

如何删除此

的问题

array(1) { [1]=> string(9) "test_en_1" } string(4) "
" array(1) { [1]=> string(9) "test_en_2" } string(4) "
" array(1) { [1]=> string(0) "" } string(4) "
" array(1) { [2]=> string(9) "test_fr_1" } string(4) "
" array(1) { [2]=> string(9) "test_fr_2" } string(4) "
" array(1) { [2]=> string(0) "" } string(4) "

我尝试了" array(1) { [1]=> string(0) "" } string(4) "，但确实无法正常工作。谢谢

Answer 1

尝试：

$N = ....; // some expression that gives the number of questions per language (3 in the sample data)
$M = ....; // some expression that gives languages (2 in the sample data)

for ($i=0; $i<$N; $i++) {
    for ($j=0; $j<$M; $j++) {
        var_dump($_POST['user_question'][$i + $j * $N]);
    }
}

如何在发送后获取数组元素

1 个答案: