Question

在控制器功能中，我提取了所有attributes以及我已经使用过的属性。

所有属性：

$attributeNames = array('' => 'Select Attribute Name') + AttributeName::lists('name' , 'id');

已经采取的属性：

$selectedAttributeNames = $xmlDocument->masterInformation->masterAttributes;

如何将selectedAttributeNames改为disable？

以下是var_dump($selectedAttributeNames)的输出：

object(Illuminate\ Database\ Eloquent\ Collection) #312 (1) {
    ["items":protected]= > array(1) {
        [0] => object(MasterAttribute) #310 (20) {
            ["table":protected]= > string(16) "master_attribute"
            ["guarded": protected] => array(1) {
                [0] => string(2) "id"
            }
            ["connection": protected] => NULL["primaryKey": protected] => string(2) "id"
            ["perPage": protected] => int(15)["incrementing"] => bool(true)["timestamps"] => bool(true)["attributes": protected] => array(7) {
                ["id"] => int(1)["xpath"] => string(17)
                "this is the xpath"
                ["attribute_name_id"] => int(1)["master_information_id"] => int(6)["default_value"] => string(25) "This is the default value"
                ["created_at"] => string(19) "2014-07-19 17:53:55"
                ["updated_at"] => string(19) "2014-07-19 17:53:55"
            }
            ["original": protected] => array(7) {
                ["id"] => int(1)["xpath"] => string(17) "this is the xpath"
                ["attribute_name_id"] => int(1)["master_information_id"] => int(6)["default_value"] => string(25) "This is the default value"
                ["created_at"] => string(19) "2014-07-19 17:53:55"
                ["updated_at"] => string(19) "2014-07-19 17:53:55"
            }
            ["relations": protected] => array(0) {}
            ["hidden": protected] => array(0) {}
            ["visible": protected] => array(0) {}
            ["appends": protected] => array(0) {}
            ["fillable": protected] => array(0) {}
            ["dates": protected] => array(0) {}
            ["touches": protected] => array(0) {}
            ["observables": protected] => array(0) {}
            ["with": protected] => array(0) {}
            ["morphClass": protected] => NULL["exists"] => bool(true)
        }
    }
}

Answer 1

不幸的是，Laravel的Form::select()辅助方法没有提供一种方法来进入为select选项构建html的过程。

据说你有几种方法可以解决这个问题：

首先：您可以创建自己的表单宏。这是过于简化的版本

Form::macro('select2', function($name, $list = [], $selected = null, $options = [], $disabled = []) {
    $html = '<select name="' . $name . '"';
    foreach ($options as $attribute => $value) {
        $html .= ' ' . $attribute . '="' . $value . '"';
    }
    $html .= '">';
    foreach ($list as $value => $text) {
        $html .= '<option value="' . $value . '"' .
            ($value == $selected ? ' selected="selected"' : '') .
            (in_array($value, $disabled) ? ' disabled="disabled"' : '') . '>' .
            $text . '</option>';
    }
    $html .= '</select>';
    return $html;
});

您可以在start.php中注册。

鉴于您首先将已经选择的项目的Illuminate Collection转换为一个简单的键数组

$selectedAttributeNames = $xmlDocument->masterInformation->masterAttributes;
$disabled = $selectedAttributeNames->toArray();

并在您的视图中提供了$attributeNames和$disabled，您可以像这样使用自定义宏

{{ Form::select2('mydropdown', $attributeNames, null, [], $disabled) }}

第二次：您可以从您的选项数组中删除（例如使用array_diff_key()）已选择的项目，而不是禁用它们：

{{ Form::select('mydropdown2', array_diff_key($attributeNames, $disabled), null, []) }}

第三：在您的视图中，您可以吐出需要禁用的已选择属性的JavaScript数组，并使用jQuery或vanilla JS执行其余客户端。

如何在Laravel中设置禁用选择选项？

1 个答案: