This is my question.
I want an option to select a photo from the WordPress library in the plugin settings page so that the uploaded image can be used in different places on the site.
I use these codes but the image is not saved in this plugin.
<?php
if ( isset( $_POST['submit_image_selector'] ) && isset( $_POST['image_attachment_id'] ) ) :
update_option( 'media_selector_attachment_id', absint( $_POST['image_attachment_id'] ) );
endif;
wp_enqueue_media();
?><form method='post'>
<div class='image-preview-wrapper'>
<img id='image-preview' src='<?php echo wp_get_attachment_url( get_option( 'media_selector_attachment_id' ) ); ?>' width='200' height="auto">
</div>
<input id="upload_image_button" type="button" class="button" value="<?php _e( 'Upload image' ); ?>" />
<input type='' name='image_attachment_id' id='image_attachment_id' value='<?php echo get_option( 'media_selector_attachment_id' ); ?>'>
<input type="submit" name="submit_image_selector" value="Save" class="button-primary">
</form>
-<?php echo wp_get_attachment_url( get_option( 'media_selector_attachment_id' ) ); ?>-
<?php
$my_saved_attachment_post_id = get_option( 'media_selector_attachment_id', 0 );
?><script type='text/javascript'>
jQuery( document ).ready( function( $ ) {
// Uploading files
var file_frame;
var wp_media_post_id = wp.media.model.settings.post.id; // Store the old id
var set_to_post_id = <?php echo $my_saved_attachment_post_id; ?>; // Set this
jQuery('#upload_image_button').on('click', function( event ){
event.preventDefault();
// If the media frame already exists, reopen it.
if ( file_frame ) {
// Set the post ID to what we want
file_frame.uploader.uploader.param( 'post_id', set_to_post_id );
// Open frame
file_frame.open();
return;
} else {
// Set the wp.media post id so the uploader grabs the ID we want when initialised
wp.media.model.settings.post.id = set_to_post_id;
}
// Create the media frame.
file_frame = wp.media.frames.file_frame = wp.media({
title: 'Select a image to upload',
button: {
text: 'Use this image',
},
multiple: false // Set to true to allow multiple files to be selected
});
// When an image is selected, run a callback.
file_frame.on( 'select', function() {
// We set multiple to false so only get one image from the uploader
attachment = file_frame.state().get('selection').first().toJSON();
// Do something with attachment.id and/or attachment.url here
$( '#image-preview' ).attr( 'src', attachment.url ).css( 'width', 'auto' );
$( '#image_attachment_id' ).val( attachment.id );
// Restore the main post ID
wp.media.model.settings.post.id = wp_media_post_id;
});
// Finally, open the modal
file_frame.open();
});
// Restore the main ID when the add media button is pressed
jQuery( 'a.add_media' ).on( 'click', function() {
wp.media.model.settings.post.id = wp_media_post_id;
});
});
</script>
