从银色条纹返回所有者字段 $many_many 关系

Question

我在推荐块<-->推荐之间有many_many关系，定义为：

class TestimonialBlockSlice extends ContentSlice
{
    private static $db = array (
        'IconColour' => 'Enum("White,Blue,Green,Orange","Green")'
    );
    private static $many_many = array(
        'Testimonials' => 'Testimonial'
    );
    private static $many_many_extraFields = array(
        'Testimonials' => array('SortOrder' => 'Int')
    );
    public function getCMSFields()
    {
        $fields = parent::getCMSFields();
        $config = GridFieldConfig_RelationEditor::create()
            ->removeComponentsByType('GridFieldDeleteAction')
            ->addComponents(new GridFieldDeleteAction('unlinkrelation'));
        $config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
            'Text'=> 'Text',
            'Author'=> 'Author'
        ));
        $testimonialsField = new GridField(
            'Testimonials',
            'Testimonial',
            $this->Testimonials(),
            $config
        );
        $fields->addFieldToTab('Root.Main', $testimonialsField);
        return $fields;
    }
}

class Testimonial extends DataObject {
    private static $db = array(
        'Text' => 'Text',
        'Author' => 'Varchar(255)'
    );
    private static $belongs_many_many = array(
        'TestimonialBlocks' => 'TestimonialBlockSlice'
    );
    private static $summary_fields = array(
        'Text' => 'Text',
        'Author' => 'Author'
    );
}

一切正常，但是在模板中我无法获得包含推荐块切片的$IconColour...我已经尝试了我能想到的一切。我正在做这样的事情：

<% loop Testimonials.Limit(2) %>
    <div class="testimonial">
        <div class="icon-quote"><img src="/themes/images/icon-quote-{ ##getIconColourHere## }.png"></div>
        <div class="testimonial-text">$Text</div>
        <div class="testimonial-author">$Author</div>
    </div>
<% end_loop %>

TestimonialBlockSlice扩展了heyday/silverstripe-slices，其中ContentSlice是一个DataObject。关于如何引用这个特定推荐块切片的 IconColor 的任何想法？ 帮助非常感谢:)

Answer 1

输入循环时，输入要循环的项目的范围/上下文。在这种情况下，您处于Testimonial的上下文中。

IconColour属于TestimonialBlockSlice类(父类(，因此您可以"向上"移动作用域级别以访问它：

<% loop Testimonials.Limit(2) %>
    <div class="testimonial">
        <div class="icon-quote"><img src="/themes/images/icon-quote-{$Up.IconColour}.png"></div>
        <div class="testimonial-text">$Text</div>
        <div class="testimonial-author">$Author</div>
    </div>
<% end_loop %>