How to create a custom search for custom post type?

I have a search field for the blog posts, but I need an other for a custom post type. How can I create this custom search form with a different search result layout?

Solutions Collecting From Web of "How to create a custom search for custom post type?"

Here is what I’ve tried and got a solution with 3 steps. Let’s say your custom post type is “products

1 . Add Function Code here you can specify the archive-search.php

function template_chooser($template)   
{    
  global $wp_query;   
  $post_type = get_query_var('post_type');   
  if( $wp_query->is_search && $post_type == 'products' )   
  {
    return locate_template('archive-search.php');  //  redirect to archive-search.php
  }   
  return $template;   
}
add_filter('template_include', 'template_chooser');    

2 . Create search result template for custom post type ( search-archive.php )

        <?php
        /* Template Name: Custom Search */        
        get_header(); ?>             
        <div class="contentarea">
            <div id="content" class="content_right">  
                     <h3>Search Result for : <?php echo "$s"; ?> </h3>       
                     <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>    
                <div id="post-<?php the_ID(); ?>" class="posts">        
                     <article>        
                    <h4><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a></h4>        
                    <p><?php the_exerpt(); ?></p>        
                    <p align="right"><a href="<?php the_permalink(); ?>">Read     More</a></p>    
                    <span class="post-meta"> Post By <?php the_author(); ?>    
                     | Date : <?php echo date('j F Y'); ?></span>    

                    </article><!-- #post -->    
                </div>
        <?php endwhile; ?>
    <?php endif; ?>




           </div><!-- content -->    
        </div><!-- contentarea -->   
        <?php get_sidebar(); ?>
        <?php get_footer(); ?>
  1. Build Search Form
    In this Search Form, the value “products” is hidden and it will search only product posts.

     <div>   
        <h3>Search Products</h3>
        <form role="search" action="<?php echo site_url('/'); ?>" method="get" id="searchform">
        <input type="text" name="s" placeholder="Search Products"/>
        <input type="hidden" name="post_type" value="products" /> <!-- // hidden 'products' value -->
        <input type="submit" alt="Search" value="Search" />
      </form>
     </div>
    

for more, I would like to link you to here
http://www.wpbeginner.com/wp-tutorials/how-to-create-advanced-search-form-in-wordpress-for-custom-post-types/

Here is what works for me. Not as clean but I couldn’t get any of these other answers to work.

Search form for Custom Post Type:

<form role="search" method="get" class="search-form" action="<?php echo home_url( '/' ); ?>">
    <label>
        <span class="screen-reader-text"><?php echo _x( 'Search for:', 'label' ) ?></span>
        <input type="search" class="search-field" placeholder="<?php echo esc_attr_x( 'Search …', 'placeholder' ) ?>" value="<?php echo get_search_query() ?>" name="s" title="<?php echo esc_attr_x( 'Search for:', 'label' ) ?>" />
        <input type="hidden" name="post_type" value="book" />
    </label>
    <input type="submit" class="search-submit" value="<?php echo esc_attr_x( 'Search', 'submit button' ) ?>" />
</form>

In functions.php:

function searchfilter($query) {
    if ($query->is_search && !is_admin() ) {
        if(isset($_GET['post_type'])) {
            $type = $_GET['post_type'];
                if($type == 'book') {
                    $query->set('post_type',array('book'));
                }
        }       
    }
return $query;
}
add_filter('pre_get_posts','searchfilter');

In search.php:

<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
    <?php if(isset($_GET['post_type'])) {
        $type = $_GET['post_type'];
           if($type == 'book') {?>

               /* Format for "book" custom post type */

           <?php } else { ?>

               /* Format for custom post types that are not "book,"
               or you can use elseif to specify a second post type the
               same way as above. Copy the default format here if you
               only have one custom post type. */

           <?php } ?>
    <?php } else { ?>

              /* Format to display when the post_type parameter
              is not set (i.e. default format) */
<?php } ?>
<?php endwhile; else: ?>

/* What to display if there are no results. */

<?php endif; ?>

Naturally in all three places you’ll need to replace “book” with your custom post type.

Hope this helps someone!

A short code more actualized

 function template_chooser($template)   
{    
  global $wp_query; 
  $post_type = $wp_query->query_vars["pagename"];   
  if( isset($_GET['s']) && $post_type == 'products' )   
  {

    return locate_template('archive-search.php');  //  redirect to archive-search.php
  }   
  return $template;   
}
add_filter('template_include', 'template_chooser'); 

I was looking to use two different forms for my normal searches and my searches on a custom post type.

My custom post type uses a different header than normal pages, on my normal page, the call to my search form is:

<?php get_search_form('true'); ?>

And the call to my search form in the custom post type header is:

<?php get_template_part('search','library'); ?>

Which has an additional field:

<input type="hidden" name="post_type" value="library" /> //Where "library" is my custom post type.

In the functions file I have the following code that you have provided.

/**
 * Custom Search for Library
*/
function search_library($template)   
{    
  global $wp_query;   
  $post_type = get_query_var('post_type');   
  if( $wp_query->is_search && $post_type == 'library' )   
  {
    return locate_template('search-library.php');  //  redirect to archive-search.php
  }   
  return $template;   
}
add_filter('template_include', 'search_library');

Which detects if the search form is doing a search within custom fields, thus showing the search in a custom template, otherwise use the normal template.

To fix the empty input search issue you can substitute the function code with this:

function template_chooser($template)   
{    
 global $wp_query;   
 $post_type = get_query_var('post_type');   
 if( isset($_GET['s']) && $post_type == 'products' )   
 {
  return locate_template('archive-search.php');  //  redirect to archive-search.php
 }   
 return $template;   
}
add_filter('template_include', 'template_chooser');