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除了调色板和子调色板外，此扩展还为DCA添加了新的字段属性（dependsOn），可以定义条件以显示字段。

基于另一个字段及其值的条件

'field1'  => [
    'exclude'    => true,
    'inputType'  => 'checkbox',
    'eval'       => ['tl_class' => 'w50 m12'],
    'sql'        => "char(1) NOT NULL default '0'",
],
'field2'  => [
    'exclude'    => true,
    'inputType'  => 'text',
    'eval'       => ['maxlength'=>64, 'tl_class'=>'w50'],
    'sql'        => "varchar(64) NOT NULL default ''",
    'dependsOn'  => [
        'field1' => 1 // Displays this field only if the checkbox (field1) has been selected.
    ]
],

基于另一个字段和自定义回调的条件

'field2'  => [
    'exclude'    => true,
    'inputType'  => 'text',
    'eval'       => ['maxlength'=>64, 'tl_class'=>'w50'],
    'sql'        => "varchar(64) NOT NULL default ''",
    'dependsOn'  => [
        'field1' => static function($fieldName, $objModel) {
            // $fieldName = field1
            // "field1" is automatically supplemented with the field evaluation "submitOnChange = true" (autoSubmit = true).
            
            // Return true = show / false = hide
            return $objModel->{$fieldName} == 1;  
        }
    ]
],

在此变体中，指定要响应的字段名称是可选的。请注意，第一个参数对应于给定的键。
例如

'field2'  => [
    'exclude'    => true,
    'inputType'  => 'text',
    'eval'       => ['maxlength'=>64, 'tl_class'=>'w50'],
    'sql'        => "varchar(64) NOT NULL default ''",
    'dependsOn'  => [
        static function($fieldName, $objModel, &$arrEvaluationFields) {
            // $fieldName = 0
            // 'field1' must be extended independently with the field evaluation 'submitOnChange = true' or added via the third parameter ($arrFields) (autoSubmit = true).
            $arrEvaluationFields[] = 'field1';
            
            // Return true = show / false = hide       
            return $objModel->field1 == 1; 
        }
    ]
],

多个条件

'field1'  => [
    'exclude'    => true,
    'inputType'  => 'checkbox',
    'eval'       => ['tl_class' => 'w50 m12'],
    'sql'        => "char(1) NOT NULL default '0'",
],
'field2'  => [
    'exclude'    => true,
    'inputType'  => 'checkbox',
    'eval'       => ['tl_class' => 'w50 m12'],
    'sql'        => "char(1) NOT NULL default '0'",
],
'field3'  => [
    'exclude'    => true,
    'inputType'  => 'text',
    'eval'       => ['maxlength'=>64, 'tl_class'=>'w50'],
    'sql'        => "varchar(64) NOT NULL default ''",
    'dependsOn'  => [
        'field2' => 1, 
        'field3' => 1 // Both fields must be checked to display this field
    ]
],

配置

基本设置必须通过config/config.yml文件维护。

contao_be_field_dependency:
    autoSubmit: true
    tables:
        - tl_article
        - tl_content
        - tl_files
        - tl_form_field
        - tl_form
        - tl_image_size_item
        - tl_image_size
        - tl_layout
        - tl_member_group
        - tl_member
        - tl_module
        - tl_opt_in
        - tl_page
        - tl_style
        - tl_style_sheet
        - tl_theme
        - tl_user_group
        - tl_user