Building WordPress Plugin Using FPDF – How do you get post content from currently viewed post?


I am using FPDF to build a plugin in wordpress that will add a button on each post(documentation) that gives the user the ability to export it as a styled pdf from the post without having to maintain working files and uploading attachements for hundreds of files.

I used this as a guide, and it currently works in one respect, however this current iteration exports a PDF of ALL posts in the documentation post type. How do I instead pull the post content from the currently viewed post only?

I have been banging my head for a week, so hopefully someone can point me in the right direction. Let me know if I can clarify anything additional.

Thanks!

<?php  if ( ! defined( 'ABSPATH' ) ) { exit; }  include( 'atomicsmash-pdf-helper-functions.php');  $  pdf = new PDF_HTML();  if( isset($  _POST['generate_posts_pdf'])){ output_pdf(); }  function output_pdf() { $  args = array(     'post_type'   => 'manual_documentation'   );  $  posts = get_posts( $  args );  if( ! empty( $  posts ) ) {     global $  pdf;     $  title_line_height = 10;     $  content_line_height = 8;      foreach( $  posts as $  post ) {          $  pdf->AddFont( 'Lato', '', 'Lato-Regular.php' );         $  pdf->AddFont( 'Lato', 'B', 'Lato-Bold.php' );         $  pdf->AddFont( 'Lato', 'I', 'Lato-Italic.php' );         $  pdf->SetMargins(12.7, 12.7);         $  pdf->SetDrawColor(36,161,89);          $  pdf->AddPage();         $  pdf->SetFont( 'Lato', 'B', 24 );         $  pdf->SetTextColor(4,23,51);         $  pdf->Write($  title_line_height, $  post->post_title);          $  pdf->SetLineWidth(1);         $  pdf->Line(14, 27, 40, 27);          // Add a line break         $  pdf->Ln(14);          // Image         $  page_width = $  pdf->GetPageWidth() - 20;         $  max_image_width = $  page_width;          $  image = get_the_post_thumbnail_url( $  post->ID );         if( ! empty( $  image ) ) {             $  pdf->Image( $  image, null, null, 100 );         }                  // Post Content         $  pdf->Ln(10);         $  pdf->SetFont( 'Lato', '', 10 );         $  pdf->SetTextColor(38,59,71);         $  pdf->WriteHTML($  post->post_content);     } }  $  pdf->Output('D','atomic_smash_fpdf_tutorial.pdf'); exit; }  function as_fpdf_create_admin_page() {  ?>  <div class="wrap"> <form method="post" id="as-fdpf-form">     <button class="custom-botton" type="submit" name="generate_posts_pdf" value="generate">Download PDF</button> </form> </div>  <?php }  function register_shortcodes(){ add_shortcode('fpdf-doc', 'as_fpdf_create_admin_page'); }  add_action( 'init', 'register_shortcodes');