我試圖讓客人通過帖子類別在我的wordpress頁面中發(fā)布活動，他們需要為帖子設(shè)置帖子縮略圖和1-3張圖像。我添加了帶有set_post_thumbnail（）的帖子縮略圖，但我無法弄清楚并在wordpress手札中找到一些東西來幫助我，也許你們知道一些東西可以幫助我走上正確的道路？到目前為止，我的代碼：//Upload Image require_once( ABSPATH . 'wp-admin/includes/image.php' ); require_once( ABSPATH . 'wp-admin/includes/file.php' ); require_once( ABSPATH . 'wp-admin/includes/media.php' ); $attachment_id = media_handle_upload('file',$post_id); $attachment_id2 = media_handle_upload('file2',$post_id); $attachment_id3 = media_handle_upload('file3',$post_id); $attachment_id4 = media_handle_upload('file4',$post_id);//Set Image as thumbnail set_post_thumbnail($post_id, $attachment_id);
1 回答
瀟瀟雨雨
TA貢獻(xiàn)1833條經(jīng)驗 獲得超4個贊
我發(fā)現(xiàn)這個問題有點模糊，所以我會用我認(rèn)為你的意思來回答。
首先，您需要表單上的屬性。enctype
<form ... enctype="multipart/form-data">
<input name="file" type="file">
<input name="file2" type="file">
<input name="file3" type="file">
<input name="file4" type="file">
</form>
現(xiàn)在，在您的流程文件中，您需要從數(shù)組中獲取每個文件。$_FILES
<?php
$file = !empty( $_FILES[ 'file' ] ) ? $_FILES[ 'file' ] : null;
$file2 = !empty( $_FILES[ 'file2' ] ) ? $_FILES[ 'file2' ] : null;
$file3 = !empty( $_FILES[ 'file3' ] ) ? $_FILES[ 'file3' ] : null;
$file4 = !empty( $_FILES[ 'file4' ] ) ? $_FILES[ 'file4' ] : null;
最后，您需要一個自定義函數(shù)來處理每個文件的上傳。這是我在我的項目中創(chuàng)建和使用的那一個（針對此問題進(jìn)行了修改，因此請進(jìn)行測試！
<?php
function my_asset_uploader( $file, $parent_id = 0, $allowed = [] ) {
require_once ABSPATH . 'wp-admin/includes/file.php';
require_once ABSPATH . 'wp-admin/includes/image.php';
// Get basic attributes
$filename = basename( $file[ 'name' ] );
$mime = wp_check_filetype( $filename );
// Get the content type from response headers
$type = !empty( $mime[ 'type' ] ) ? $mime[ 'type' ] : $file[ 'type' ];
$ext = !empty( $mime[ 'ext' ] ) ? $mime[ 'ext' ] : trim( explode( '|' , array_search( $type, get_allowed_mime_types() ) )[ 0 ] );
// Basic checks
if ( !$type || !$ext || ( !empty( $allowed ) && is_array( $allowed ) && !in_array( $ext, $allowed ) ) ) {
// Not a valid file
return new WP_Error( 'upload', 'Invalid file type. Please try another file.' );
}
// Move file to wp-content
$body = @file_get_contents( $file[ 'tmp_name' ] );
$file = wp_upload_bits( $filename, null, $body );
// Upload check
if ( !empty( $file[ 'error' ] ) ) {
return new WP_Error( 'upload', $file[ 'error' ] );
}
// Write attachment location to the database
$attachment_id = wp_insert_attachment( [
'post_title' => $filename,
'post_mime_type' => $file[ 'type' ]
], $file[ 'file' ], $parent_id, true );
if ( is_wp_error( $attachment_id ) ) {
return $attachment_id;
}
// Generate meta
$attach_data = wp_generate_attachment_metadata( $attachment_id, $file[ 'file' ] );
wp_update_attachment_metadata( $attachment_id, $attach_data );
return $attachment_id;
}
用法
<?php
/**
* Extensions we allow the user to upload
*/
$allowed_extensions = [ 'jpg', 'jpeg', 'png', 'gif' ];
/**
* Insert post
*/
$post_id = wp_insert_post( ... );
/**
* Get all files from the request payload
*/
$all_images = array_filter( [
!empty( $_FILES[ 'file' ] ) ? $_FILES[ 'file' ] : null,
!empty( $_FILES[ 'file2' ] ) ? $_FILES[ 'file2' ] : null,
!empty( $_FILES[ 'file3' ] ) ? $_FILES[ 'file3' ] : null,
!empty( $_FILES[ 'file4' ] ) ? $_FILES[ 'file4' ] : null,
] );
/**
* Uploaded files
*/
$attachment_ids = [];
/**
* Check we have any images before looping
*/
if ( $all_images ) {
foreach ( $all_images as $img_file ) {
$this_id = my_asset_uploader( $img_file, $post_id, $allowed_extensions );
if ( $this_id && !is_wp_error( $this_id ) ) {
$attachment_ids[] = $this_id;
}
}
}
/**
* Check at least one image was successfully uploaded
*/
if ( !empty( $attachment_ids[ 0 ] ) ) {
set_post_thumbnail( $post_id, $attachment_ids[ 0 ] );
}
這只是一個起點，引導(dǎo)您朝著正確的方向前進(jìn)。
希望這有幫助！
編輯
將三個圖像添加到post_content...
如果使用上述過程并且您擁有附件ID數(shù)組，則可以將每個附件的圖像html附加到帖子內(nèi)容中，如下所示：
<?php
...
/**
* Check at least one image was successfully uploaded
*/
if ( !empty( $attachment_ids[ 0 ] ) ) {
set_post_thumbnail( $post_id, $attachment_ids[ 0 ] );
}
/**
* We have multiple files, lets append them to the post_content
*/
if ( count( $attachment_ids ) > 1 ) {
$appendage = '';
foreach ( $attachment_ids as $i => $img_id ) {
// Skip the first image because we used that as the thumbnail
if ( $i === 0 ) continue;
// Get the attachment HTML for a `large` sized image
if ( $html = wp_get_attachment_image( $img_id, 'large' ) ) {
$appendage .= $html;
}
}
if ( !empty( $appendage ) ) {
/**
* Get the current post content
*/
$current_content = get_post_field( 'post_content', $post_id, 'raw' );
/**
* Update the post
*/
wp_update_post( [
'ID' => $post_id,
'post_content' => ( $current_content . $appendage ) // Joining the two strings
] );
}
}
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