columns:
    title:
        label: jz.bm::lang.common.title
        searchable: true
    type:
        label: jz.bm::lang.materials.type
    course:
        label: jz.bm::lang.common.course
        relation: course
        select: name
    published_at:
        label: jz.bm::lang.materials.published_at
    created_at:
        label: jz.bm::lang.common.created_at
        type: datetime