我想为特定输入字段设置最小图像尺寸id= "job_logo" 在前端的提交表单中

根据这个答案How to Require a Minimum Image Dimension for Uploading?

以下代码设置了所有图像上载的限制

add_filter(\'wp_handle_upload_prefilter\',\'tc_handle_upload_prefilter\');
function tc_handle_upload_prefilter($file)
{

    $img=getimagesize($file[\'tmp_name\']);
    $minimum = array(\'width\' => \'640\', \'height\' => \'480\');
    $width= $img[0];
    $height =$img[1];

    if ($width < $minimum[\'width\'] )
        return array("error"=>"Image dimensions are too small. Minimum width is {$minimum[\'width\']}px. Uploaded image width is $width px");

    elseif ($height <  $minimum[\'height\'])
        return array("error"=>"Image dimensions are too small. Minimum height is {$minimum[\'height\']}px. Uploaded image height is $height px");
    else
        return $file; 
}

对于id=“job\\u logo”的特定字段，是否有办法做到这一点，即

以下是用于提交表单的wp job manager类别

https://github.com/Automattic/WP-Job-Manager/blob/c838d6ee3a3d0fd224d666bfee55f58517e10cf6/includes/forms/class-wp-job-manager-form-submit-job.php#L206

这是我用来添加上传图像字段的代码

add_filter( \'submit_job_form_fields\', \'my_custom_tax\' );
function my_custom_tax( $fields ) {
  $fields[\'job\'][\'job_logo\'] = array(
          \'label\'       => __( \'Logo\', \'wp-job-manager\' ),
          \'type\'        => \'file\',
          \'required\'    => false,
          \'placeholder\' => \'\',
          \'priority\'    => 1.15,
          \'ajax\'        => true,
          \'multiple\'    => false,
          \'allowed_mime_types\' => array(
            \'jpg\'  => \'image/jpeg\',
            \'jpeg\' => \'image/jpeg\',            
            \'png\'  => \'image/png\'
          )
  );
  return $fields;
}

以下是上载徽标图像字段的html输出

<input type="file" class="input-text wp-job-manager-file-upload" data-file_types="jpg|jpeg|png" name="job_logo" id="job_logo" placeholder="">

add_filter(\'wp_handle_upload_prefilter\',\'tc_handle_upload_prefilter\');
function tc_handle_upload_prefilter($file) {
    // Debugging...
    //return array("error"=> print_r( $_POST, true ) );
    //return array("error"=> print_r( $file, true ) );

    //return array("error"=> print_r( $GLOBALS, true ) ); // This is helpful...
    //return array( "error"=> print_r( $GLOBALS[\'job_manager_uploading_file\'], true ) ); // Now we\'re cooking!

    if ( ! isset( $GLOBALS[\'job_manager_uploading_file\'] ) || ( \'job_logo\' !== $GLOBALS[\'job_manager_uploading_file\'] ) ) {
        return $file;       
    }

    $img = getimagesize( $file[\'tmp_name\'] );
    $minimum = array( \'width\' => \'640\', \'height\' => \'480\' );
    $width = $img[0];
    $height = $img[1];

    if ( $width < $minimum[\'width\'] )
        return array( "error"=>"Image dimensions are too small. Minimum width is {$minimum[\'width\']}px. Uploaded image width is $width px");

    elseif ( $height < $minimum[\'height\'] )
        return array("error"=>"Image dimensions are too small. Minimum height is {$minimum[\'height\']}px. Uploaded image height is $height px");
    else
        return $file; 
}