How do I require uploading images when posting to a blog?

[nguyenvanphu]

I am using Sngine 3.11

How to force users to upload images when posting to a blog (because by default there is no mandatory upload feature)

I used required attribute but it didn't work

<div class="row form-group">

<label class="col-md-2 form-label">

{__("Cover")}

</label>

<div class="col-md-10">

<div class="x-image">

<button type="button" class="btn-close x-hidden js_x-image-remover" title='{__("Remove")}'>



</button>

<div class="x-image-loader">

<div class="progress x-progress">

<div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100"></div>

</div>

</div>

<i class="fa fa-camera fa-lg js_x-uploader" data-handle="x-image"></i>

<input type="hidden" class="js_x-image-input" name="cover" required>

</div>

</div>

</div>

Can you help me?