Search by word, category, tag, author

Question

I want to make a search page, offering search functionalities by: 1) word 2) tag 3) category 4) author Can you recommend any technique, any guideline as per how to tackle this?

Answer 1

You'll want to add some radio buttons inside your search form. Then add a filter to your search:

function filter_search( $query ) {
if( $query->is_search ) {
            if ( isset($_GET['tag']) )
            // alter your search query here.
}
return $query;
}
add_filter( 'pre_get_posts' , 'filter_search' );

Influenced by http://wordpress.org/support/topic/how-to-add-search-filter-by-custom-values#post-1463329

Answer 2

If you'd prefer to let a WordPress plugin handle the work for you, check out Search Everything, in the WordPress plugin repository.

Increases WordPress' default search functionality in three easy steps using Search Everything.

Better WordPress search in three steps

Activate Configure options Search ( maybe that's only two steps )

Options include search highlight, searching pages, excerpts, attachments, drafts, comments and custom fields (metadata).

What it does:

Search Everything increases the ability of the default WordPress Search, options included:

• Search Highlighting
• Search Every Page
• Search Every Tag
• Search Custom Taxonomies ( new )
• Search Every Category
• Search non-password protected pages only
• Search Every Comment
• Search only approved comments
• Search Every Draft
• Search Every Excerpt
• Search Every Attachment (post type)
• Search Every Custom Field (metadata)
• Exclude Posts from search
• Exclude Categories from search

[WordPress Plugin]: Search Everything