WordPress 自定义帖子类型前端特色图片提交

Posted 2023-02-19

【中文标题】WordPress 自定义帖子类型前端特色图片提交

【英文标题】：WordPress Custom Post Type FrontEnd Featured Image Submission

【发布时间】：2021-12-26 08:53:01

【问题描述】：

我有一个表单可以从前端提交自定义帖子类型。但是图像提交不起作用。我认为附件的代码缺少一些东西。我只是收集了代码并粘贴到我的代码中，甚至不知道它是否适合插入图像的代码。这将是一个公共帖子，因此无需登录即可从前端提交此帖子。我的代码如下：

<?php add_shortcode( 'singul_frontend_post', 'singul_frontend_post' );
function singul_frontend_post() 
    singul_save_post_if_submitted();
    
    ?>
<div id="postbox">
    <form id="new_post" name="new_post" method="post" >

    <div class="form-group"><label for="title">Student Name</label><br />
        <input type="text" id="title" value="" tabindex="1" size="20" name="title" class="form-control" />
</div>
<div class="row">
    <div class="col-md-6">
        <div class="form-group">
        <label for="title">Year Of SSC</label><br />
    <select name="ssc" class="form-control" searchable="A">
    <?php
       $tax_terms = get_terms('ssc', array('hide_empty' => '0'));      
       foreach ( $tax_terms as $tax_term ):  
          echo '<option value="" selected disabled hidden>Choose Year</option><option value="'.$tax_term->name.'">'.$tax_term->name.'</option>';   
       endforeach;
    ?>
</select></div>
</div>
<div class="col-md-6">
    <div class="form-group">
    <label for="title">Group</label><br />
    <select name="group" class="form-control" searchable="A">
    <?php
       $tax_terms = get_terms('group', array('hide_empty' => '0'));      
       foreach ( $tax_terms as $tax_term ):  
          echo '<option value="" selected disabled hidden>Choose Group</option><option value="'.$tax_term->name.'">'.$tax_term->name.'</option>';   
       endforeach;
    ?>
</select></div></div>
</div>

<div class="row">
    <div class="col-md-6">
    <div class="form-group"><label for="title">Current Position</label><br />
        <input type="text" id="title" value="" tabindex="1" size="20" name="cposition" class="form-control" />
    </div>
    </div>
    <div class="col-md-6"><div class="form-group"><label for="title">Current Institute</label><br />
        <input type="text" id="title" value="" tabindex="1" size="20" name="cinstitute" class="form-control" />
    </div></div>
</div>

    <div class="row">
        <div class="col-md-6">
        <div class="form-group"><label for="title">Contact Number</label><br />
        <input type="text" id="title" value="" tabindex="1" size="20" name="contact" class="form-control"  placeholder="01XXXXXXXXX"/>
    </div>
    </div>
    <div class="col-md-6">
    <div class="form-group"><label for="title">Email Address</label><br />
        <input type="email" id="title" value="" tabindex="1" size="20" name="email" class="form-control"  />
    </div>
    </div>
</div>

    <div class="row">
        <div class="col-md-6">
        <div class="form-group"><label for="title">Facebook ID</label><br />
        <input type="text" id="title" value="" tabindex="1" size="20" name="facebook" class="form-control"  />
    </div>
        </div>
        <div class="col-md-6">
        <div class="form-group"><label for="title">Photo</label><br />
    <input type="file" name="user-image-featured" id="user-image-featured" size="20" class="form-control-file" >
    
</div>
        </div>
    </div>
   
    
    
    <?php wp_nonce_field( 'wps-frontend-post' ); ?>

    <div class="form-group"><button type="submit" value="Publish" tabindex="6" id="submit" name="submit" class="btn btn-primary">Submit</button></div>
    
    </form>
</div>
    <?php


    
    function singul_save_post_if_submitted() 
    // Stop running function if form wasn't submitted
    if ( !isset($_POST['title']) ) 
        return;
    

    // Check that the nonce was set and valid
    if( !wp_verify_nonce($_POST['_wpnonce'], 'wps-frontend-post') ) 
        echo 'Did not save because your form seemed to be invalid. Sorry';
        return;
    

    // Do some minor form validation to make sure there is content
    if (strlen($_POST['title']) < 3) 
        echo 'Please enter a title. Titles must be at least three characters long.';
        return;
    
    

    // Add the content of the form to $post as an array
    $post = array(
        'post_title'    => $_POST['title'],
        'post_status'   => 'draft',   // Could be: publish
        'post_type'     => 'student' // Could be: `page` or your CPT
    );
    
    $cposition = $_POST['cposition'];
    $institute = $_POST['cinstitute'];
    $contact = $_POST['contact'];
    $email = $_POST['email'];
    $fbid = $_POST['facebook'];
    $ssc = $_POST['ssc'];
    $group = $_POST['group'];
    $post_id = wp_insert_post($post);
    update_post_meta( $post_id, 'snp_student_cposition', $cposition );
    update_post_meta( $post_id, 'snp_student_institute', $institute );
    update_post_meta( $post_id, 'snp_student_contact', $contact );
    update_post_meta( $post_id, 'snp_student_email', $email );
    update_post_meta( $post_id, 'snp_student_fbid', $fbid );
    wp_set_object_terms($post_id, $ssc, 'ssc');
    wp_set_object_terms($post_id, $group, 'group');
    
        
     
        // These files need to be included as dependencies when on the front end.
        require_once( ABSPATH . 'wp-admin/includes/image.php' );
        require_once( ABSPATH . 'wp-admin/includes/file.php' );
        require_once( ABSPATH . 'wp-admin/includes/media.php' );
         
        // Let WordPress handle the upload.
        // Remember, 'user-image-featured' is the name of our file input in our form above.
        $attachment_id = media_handle_upload( 'user-image-featured', $post_id);
            set_post_thumbnail( $post_id, $attachment_id );
         
    echo 'Saved your post successfully! :)';

【参考方案1】：

您在表单标签中缺少 enctype='multipart/form-data' 当表单中有文件类型字段时这是必需的：

<form id="new_post" name="new_post" method="post" enctype='multipart/form-data'>

请在表格中添加标签，然后使用下面的链接作为参考。 https://developer.wordpress.org/reference/functions/media_handle_upload/