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cmb2-front-end-submit.php
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cmb2-front-end-submit.php
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<?php
/**
* @link http://webdevstudios.com/2015/03/30/use-cmb2-to-create-a-new-post-submission-form/ Original tutorial
*/
/**
* Register the form and fields for our front-end submission form
*/
function yourprefix_frontend_form_register() {
$cmb = new_cmb2_box( array(
'id' => 'front-end-post-form',
'object_types' => array( 'post' ),
'hookup' => false,
'save_fields' => false,
) );
$cmb->add_field( array(
'name' => __( 'New Post Title', 'YOURTEXTDOMAIN' ),
'id' => 'submitted_post_title',
'type' => 'text',
'default' => ! empty( $_POST['submitted_post_title'] )
? $_POST['submitted_post_title']
: __( 'New Post', 'YOURTEXTDOMAIN' ),
) );
$cmb->add_field( array(
'default_cb' => 'yourprefix_maybe_set_default_from_posted_values',
'name' => __( 'New Post Content', 'YOURTEXTDOMAIN' ),
'id' => 'submitted_post_content',
'type' => 'wysiwyg',
'options' => array(
'textarea_rows' => 12,
'media_buttons' => false,
),
) );
$cmb->add_field( array(
'default_cb' => 'yourprefix_maybe_set_default_from_posted_values',
'name' => __( 'Featured Image for New Post', 'YOURTEXTDOMAIN' ),
'id' => 'submitted_post_thumbnail',
'type' => 'text',
'attributes' => array(
'type' => 'file', // Let's use a standard file upload field
),
) );
$cmb->add_field( array(
'default_cb' => 'yourprefix_maybe_set_default_from_posted_values',
'name' => __( 'Categories', 'YOURTEXTDOMAIN' ),
'id' => 'submitted_categories',
'type' => 'taxonomy_multicheck',
'taxonomy' => 'category', // Taxonomy Slug
) );
$cmb->add_field( array(
'default_cb' => 'yourprefix_maybe_set_default_from_posted_values',
'name' => __( 'Your Name', 'YOURTEXTDOMAIN' ),
'desc' => __( 'Please enter your name for author credit on the new post.', 'YOURTEXTDOMAIN' ),
'id' => 'submitted_author_name',
'type' => 'text',
) );
$cmb->add_field( array(
'default_cb' => 'yourprefix_maybe_set_default_from_posted_values',
'name' => __( 'Your Email', 'YOURTEXTDOMAIN' ),
'desc' => __( 'Please enter your email so we can contact you if we use your post.', 'YOURTEXTDOMAIN' ),
'id' => 'submitted_author_email',
'type' => 'text_email',
) );
}
add_action( 'cmb2_init', 'yourprefix_frontend_form_register' );
/**
* Sets the front-end-post-form field values if form has already been submitted.
*
* @return string
*/
function yourprefix_maybe_set_default_from_posted_values( $args, $field ) {
if ( ! empty( $_POST[ $field->id() ] ) ) {
return $_POST[ $field->id() ];
}
return '';
}
/**
* Gets the front-end-post-form cmb instance
*
* @return CMB2 object
*/
function yourprefix_frontend_cmb2_get() {
// Use ID of metabox in yourprefix_frontend_form_register
$metabox_id = 'front-end-post-form';
// Post/object ID is not applicable since we're using this form for submission
$object_id = 'fake-oject-id';
// Get CMB2 metabox object
return cmb2_get_metabox( $metabox_id, $object_id );
}
/**
* Handle the cmb_frontend_form shortcode
*
* @param array $atts Array of shortcode attributes
* @return string Form html
*/
function yourprefix_do_frontend_form_submission_shortcode( $atts = array() ) {
// Get CMB2 metabox object
$cmb = yourprefix_frontend_cmb2_get();
// Get $cmb object_types
$post_types = $cmb->prop( 'object_types' );
// Current user
$user_id = get_current_user_id();
// Parse attributes
$atts = shortcode_atts( array(
'post_author' => $user_id ? $user_id : 1, // Current user, or admin
'post_status' => 'pending',
'post_type' => reset( $post_types ), // Only use first object_type in array
), $atts, 'cmb_frontend_form' );
/*
* Let's add these attributes as hidden fields to our cmb form
* so that they will be passed through to our form submission
*/
foreach ( $atts as $key => $value ) {
$cmb->add_hidden_field( array(
'field_args' => array(
'id' => "atts[$key]",
'type' => 'hidden',
'default' => $value,
),
) );
}
// Initiate our output variable
$output = '';
// Get any submission errors
if ( ( $error = $cmb->prop( 'submission_error' ) ) && is_wp_error( $error ) ) {
// If there was an error with the submission, add it to our ouput.
$output .= '<h3>' . sprintf( __( 'There was an error in the submission: %s', 'YOURTEXTDOMAIN' ), '<strong>'. $error->get_error_message() .'</strong>' ) . '</h3>';
}
// If the post was submitted successfully, notify the user.
if ( isset( $_GET['post_submitted'] ) && ( $post = get_post( absint( $_GET['post_submitted'] ) ) ) ) {
// Get submitter's name
$name = get_post_meta( $post->ID, 'submitted_author_name', 1 );
$name = $name ? ' '. $name : '';
// Add notice of submission to our output
$output .= '<h3>' . sprintf( __( 'Thank you%s, your new post has been submitted and is pending review by a site administrator.', 'YOURTEXTDOMAIN' ), esc_html( $name ) ) . '</h3>';
}
// Get our form
$output .= cmb2_get_metabox_form( $cmb, 'fake-oject-id', array( 'save_button' => __( 'Submit Post', 'YOURTEXTDOMAIN' ) ) );
return $output;
}
add_shortcode( 'cmb_frontend_form', 'yourprefix_do_frontend_form_submission_shortcode' );
/**
* Handles form submission on save. Redirects if save is successful, otherwise sets an error message as a cmb property
*
* @return void
*/
function yourprefix_handle_frontend_new_post_form_submission() {
// If no form submission, bail
if ( empty( $_POST ) || ! isset( $_POST['submit-cmb'], $_POST['object_id'] ) ) {
return false;
}
// Get CMB2 metabox object
$cmb = yourprefix_frontend_cmb2_get();
$post_data = array();
// Get our shortcode attributes and set them as our initial post_data args
if ( isset( $_POST['atts'] ) ) {
foreach ( (array) $_POST['atts'] as $key => $value ) {
$post_data[ $key ] = sanitize_text_field( $value );
}
unset( $_POST['atts'] );
}
// Check security nonce
if ( ! isset( $_POST[ $cmb->nonce() ] ) || ! wp_verify_nonce( $_POST[ $cmb->nonce() ], $cmb->nonce() ) ) {
return $cmb->prop( 'submission_error', new WP_Error( 'security_fail', __( 'Security check failed.' ) ) );
}
// Check title submitted
if ( empty( $_POST['submitted_post_title'] ) ) {
return $cmb->prop( 'submission_error', new WP_Error( 'post_data_missing', __( 'New post requires a title.' ) ) );
}
// And that the title is not the default title
if ( $cmb->get_field( 'submitted_post_title' )->default() == $_POST['submitted_post_title'] ) {
return $cmb->prop( 'submission_error', new WP_Error( 'post_data_missing', __( 'Please enter a new title.' ) ) );
}
/**
* Fetch sanitized values
*/
$sanitized_values = $cmb->get_sanitized_values( $_POST );
// Set our post data arguments
$post_data['post_title'] = $sanitized_values['submitted_post_title'];
unset( $sanitized_values['submitted_post_title'] );
$post_data['post_content'] = $sanitized_values['submitted_post_content'];
unset( $sanitized_values['submitted_post_content'] );
// Create the new post
$new_submission_id = wp_insert_post( $post_data, true );
// If we hit a snag, update the user
if ( is_wp_error( $new_submission_id ) ) {
return $cmb->prop( 'submission_error', $new_submission_id );
}
$cmb->save_fields( $new_submission_id, 'post', $sanitized_values );
/**
* Other than post_type and post_status, we want
* our uploaded attachment post to have the same post-data
*/
unset( $post_data['post_type'] );
unset( $post_data['post_status'] );
// Try to upload the featured image
$img_id = yourprefix_frontend_form_photo_upload( $new_submission_id, $post_data );
// If our photo upload was successful, set the featured image
if ( $img_id && ! is_wp_error( $img_id ) ) {
set_post_thumbnail( $new_submission_id, $img_id );
}
/*
* Redirect back to the form page with a query variable with the new post ID.
* This will help double-submissions with browser refreshes
*/
wp_redirect( esc_url_raw( add_query_arg( 'post_submitted', $new_submission_id ) ) );
exit;
}
add_action( 'cmb2_after_init', 'yourprefix_handle_frontend_new_post_form_submission' );
/**
* Handles uploading a file to a WordPress post
*
* @param int $post_id Post ID to upload the photo to
* @param array $attachment_post_data Attachement post-data array
*/
function yourprefix_frontend_form_photo_upload( $post_id, $attachment_post_data = array() ) {
// Make sure the right files were submitted
if (
empty( $_FILES )
|| ! isset( $_FILES['submitted_post_thumbnail'] )
|| isset( $_FILES['submitted_post_thumbnail']['error'] ) && 0 !== $_FILES['submitted_post_thumbnail']['error']
) {
return;
}
// Filter out empty array values
$files = array_filter( $_FILES['submitted_post_thumbnail'] );
// Make sure files were submitted at all
if ( empty( $files ) ) {
return;
}
// Make sure to include the WordPress media uploader API if it's not (front-end)
if ( ! function_exists( 'media_handle_upload' ) ) {
require_once( ABSPATH . 'wp-admin/includes/image.php' );
require_once( ABSPATH . 'wp-admin/includes/file.php' );
require_once( ABSPATH . 'wp-admin/includes/media.php' );
}
// Upload the file and send back the attachment post ID
return media_handle_upload( 'submitted_post_thumbnail', $post_id, $attachment_post_data );
}