[Support request] Change searchform.php to limit search results to within active category archive

Also, the Search input placeholder text does not disappear on focus, the word search is still there and I have to backspace to delete the word before I can search.
How do I make this disappear on focus?

I tried that and it didn’t work unfortunately. I am bringing in the search form/search bar via a short code, and that shortcode does have a form in it as well. This is the code:

function wpbsearchform( $form ) {
	 
	$form = '<form role="search" method="get" id="searchform" action="' . home_url( '/' ) . '" >
	<div><label class="screen-reader-text" for="s">' . __('Search for:') . '</label>
	<input type="text" value="Search' . get_search_query() . '" name="s" id="s" />
	<input type="submit" id="searchsubmit" value="'. esc_attr__('Search') .'" />
	</div>
	</form>';
	 
	return $form;
}

	add_shortcode('wpbsearch', 'wpbsearchform');

If I try to add the form above, I get an error because of the the values between ‘ ‘ don’t get read (see photo)

Do you know if there is a filter I can add to the form in this shortcode that will limit my search to just the archive page I am on? some sort of dynamic boolean statement like if cat = cat_id do this else do this?

Thanks

proper function for shortcode:

updated form shortcode with error in functions.php:

Hi,

That code worked with a bit of tinkering! Thanks. I am running into a new issue where even though the search is now limiting it’s search to the category of the archive it is on, when the search button is pressed, it brings up all the posts from that category regardless of the term searched. So even if you search for a very specific term, it just brings up everything with that category. This is the updated code
Also thanks for the plugin recommendation, we are trying to make the website as lightweight as possible so we would like to avoid plugins for now but will look into it if this doesn’t work

		add_shortcode( 'wpbsearch', function() {
		ob_start();
		
		?>
			<form role="search" method="get" class="search-form" action="<?php echo home_url( '/' ); ?>">
    <input type="hidden" name="post_type" value="post">
​
    <?php if ( is_category() || is_tag() ) { ?>
        <?php $current_category = get_queried_object(); ?>
​
        <label>
            <span class="screen-reader-text"><?php echo esc_html_e( 'Search for:', 'client-name' ); ?></span>
            <input type="search" class="search-field"
                placeholder="<?php echo esc_html_e( 'Search', 'client-name' ); ?> <?php echo $current_category->name; ?>"
                value="<?php echo get_search_query() ?>" name="s"
                required/>
        </label>
​
        <?php if ( is_category() ) { ?>
​
            <input type="hidden" name="category_name" value="<?php echo $current_category->slug ?>">
​
        <?php } elseif ( is_tag() ) { ?>
            
            <input type="hidden" name="tag" value="<?php echo $current_category->slug ?>">
​
       <?php } else { ?>
​
        <label>
            <span class="screen-reader-text"><?php echo esc_html_e( 'Search for:', 'client-name' ); ?></span>
            <input type="search" class="search-field"
                placeholder="<?php echo esc_html_e( 'Search', 'client-name' ); ?>"
                value="<?php echo get_search_query() ?>" name="s"
                required/>
		</label>
		<?php } ?>
		<button type="submit" class="search-submit" value="" />
        <span class="screen-reader-text"><?php echo esc_html_e( 'Search', 'client-name' ) ?></span>
        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 23.92 23.93" aria-hidden="true" class="search-submit-icon"><path d="M17,14.69l.39.14a2.51,2.51,0,0,1,.8.61l5.07,5.07a1.93,1.93,0,0,1,.57,1.83,1.89,1.89,0,0,1-1,1.33,1.91,1.91,0,0,1-2-.07,2.56,2.56,0,0,1-.37-.3l-5.24-5.23a2.15,2.15,0,0,1-.53-.88.93.93,0,0,0,0-.13,9.33,9.33,0,0,1-9.57.63,8.83,8.83,0,0,1-4.08-4A9.35,9.35,0,0,1,14.5,1.55a9,9,0,0,1,4,6A9.25,9.25,0,0,1,17,14.69ZM9.35,16.35a7,7,0,1,0-7-7A7,7,0,0,0,9.35,16.35Z"/></svg>
    </button>
		<?php
		return ob_get_clean();
	} } );