Search in Archive Pages by subcategory, tag, custom field and year

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I’ve been struggling to find the best solution for a better (custom) search. I’m using WordPress for a large Media Catalog, so my intention is to provide better search options.

So far I’ve been able to put various search forms in the archive.php that perform search by: subcategory, tag, custom field(autor) and year, all within the same Archive Category.

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I’m posting this here to see if there’s any body out there that would like to improve or use what I’ve done so far.

What I hate about it is having different forms for each type of search, I feel it’s not user friendly at all. Perhaps somebody could help me out to build a better solution.
Eventually I’ll integrate this with jQuery to see if it can get any better, but first I want to clean up my code, I’m thinking that there could be easier and better ways to do the markup of what I’ve done.

Forget about multiple forms….

UPDATE

FORM: 

<?php
// Current URL for setting up Search Form Action
global $wp;
$current_url = get_home_url(null, $wp->request, null);
?>

<form role="search" method="get" action="<?php echo $current_url; ?>/">
<input type="hidden" name="s" value="true" />

<!-- General Search -->
<label for="s">General</label>
<input type="text" name="s" />

<!-- Tag Search -->
<label for="tag">Tag</label>
<input type="text" name="tag" />

<!-- Autor Search -->
<label for="autor">Autor</label>
<input type="text" name="autor" />

<input value="Buscar" type="submit">
</form>

FUNCTION 

// Extend Search
function search_filter($query) {
if ( !is_admin() && $query->is_main_query() ) {
    if ($query->is_search) {

        $query->set( 'tag', $query->query_vars['s'] );

        $query->set( 'meta_key' , 'autor' );
        $query->set( 'meta_value' , $query->query_vars['s'] );

}   }   }
add_action('pre_get_posts','search_filter');
Post Views: 1

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2 comments

  1. You only need one form and a callback on pre_get_posts. For example:

    <form role="search" method="get" id="searchform" action="<?php echo $current_url; ?>">
    <input type="hidden" name="s" value="true" />

    <!-- Tag Search -->
    <label for="tags">Search Tag:</label>
    <input type="text" value="Search" name="tags" id="tagsearchbox" />

    <!-- Custom Field "autor" Search -->
    <label for="autors">Search in Custom Field 'autor':</label>
    <input type="text" value="Search" name="autors" id="autorsearchbox" />

    <input id="searchsubmit" value="Search" type="submit">
</form>

    Now your callback:

    function alter_search_ppp_wpse_107154($qry) {
  if ($qry_>is_main_query() && $qry->is_search()) {
    // parse your fields here and alter the query with $qry->set like this :
    $qry->set('post_per_page',10);
  }
}
add_action('pre_get_posts','alter_search_ppp_wpse_107154');

    You should validate that code. You have strange things happening, like multiple id attributes on some elements and put that Javascript in a file and enqueue it.

  2. In case it comes handy for anyone.

    My goal was to inlcude an enhaced/better search, providing other fields for tag and custom field search.

    The following form is inserted in archive.php, $categoria_id being the current archive category:

    <form class="group" role="search" method="get" action="<?php echo site_url(); ?>/">
    <input type="hidden" name="cat" value="<?php echo $categoria_id; ?>" />

    <!-- General Search -->
    <input type="text" value="General" name="s" onfocus="if (this.value == 'General') {this.value = '';}" onblur="if (this.value == '') {this.value = 'General';}" />
    <!-- Tag Search -->
    <input type="text" value="Etiqueta" name="tags" onfocus="if (this.value == 'Etiqueta') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Etiqueta';}" />
    <!-- Autor Search -->
    <input type="text" value="Autor" name="autor" onfocus="if (this.value == 'Autor') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Autor';}" />

    <input value="Buscar" type="submit">
</form>

    In functions.php I inserted the following function, as suggested by @s_ha_dum

    // Extend Search
function search_filter($query) {
    if ( !is_admin() && $query->is_main_query() ) {
        if ( $query->is_search ) {

            $tags = $_GET['tags'];
            if ( isset( $_GET['tags'] ) && $_GET['tags'] == 'Etiqueta' ) {
                $tags = NULL;
            } elseif ( $tags != NULL ) {
                $query->set( 'tag', $tags );
            }

            $autor = $_GET['autor'];
            if ( isset( $_GET['autor'] ) && $_GET['autor'] == 'Autor' ) {
                $autor = NULL;
            } elseif ( $autor != NULL ) {
                $metaQuery = array( array( 'key' => 'autor', 'value' => $autor, 'compare' => 'LIKE' ) );
                $query->set( 'meta_query' , $metaQuery );
            }

}   }   }
add_action('pre_get_posts','search_filter');

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