WordPress 后台创建相册gallery时添加自定义字段

add_action('print_media_templates', function(){

?>

<script type="text/html" id="tmpl-my-custom-gallery-setting">

<span class="setting">

<label for="gallery-settings-preview" class="name">游客预览数</label>

<input type="text" id="gallery-settings-preview" name="preview" data-setting="preview" style="float: left;width: 100px" />

</span>

</script>

<script>

jQuery(document).ready(function(){

_.extend(wp.media.gallery.defaults, {

preview: ''

});

wp.media.view.Settings.Gallery = wp.media.view.Settings.Gallery.extend({

template: function(view){

return wp.media.template('gallery-settings')(view)

+ wp.media.template('my-custom-gallery-setting')(view);

}

});

});

</script>

<?php

});