如何在falilid
内获取名为repeat.for
的已过滤数组的长度,然后将此长度用作.files-message
div的条件?如果此长度为undefined, false, 0, null
等,则应显示消息,否则应隐藏其他消息。我曾尝试为ref
编写.white-box
,尝试绑定新属性,我保存已过滤的数组,然后在条件中使用它...但没有帮助。任何想法?寻求你的帮助
<div class="elem" if.bind="!elem.children.length">
<div class="files-wrapper">
<div class="form-inline">
<div class="white-box" repeat.for="fail of failid | filterOnProperty:'elemId':elem.parent.id | filterOnProperty:'remove':false" >
<elem-fail if.bind="fail != null" fail.two-way="fail" on-fail-eemaldatud.call="failRemoved(fail)"></elem-fail>
</div>
<div class="files-message">Some message</div>
<editable-file-upload liik-kl-oid.bind="elem.parent.id" on-file-uploaded.call="failUploaded(liik.parent.id, subelem.id, failiViitedId, file)">Lae üles</editable-file-upload>
</div>
</div>
</div>
答案 0 :(得分:3)
您可以在父属性中创建已过滤的数组,然后在repeat.for
和if.bind
中使用此属性。例如:
<div class="form-inline" ref="myForm" fails.bind="failid | filterOnProperty:'elemId':elem.parent.id | filterOnProperty:'remove':false">
<div class="white-box" repeat.for="fail of myForm.fails">
<elem-fail if.bind="fail != null" fail.two-way="fail" on-fail-eemaldatud.call="failRemoved(fail)"></elem-fail>
</div>
<div class="files-message" if.bind="myForm.fails.length">Some message</div>
<editable-file-upload liik-kl-oid.bind="elem.parent.id" on-file-uploaded.call="failUploaded(liik.parent.id, subelem.id, failiViitedId, file)">Lae üles</editable-file-upload>
</div>
希望这有帮助!