Basic site search for the SilverStripe Elemental module. It works by saving a text reprentation of the elemental area to an extra field in SiteTree.
composer require jbennecker/silverstripe-elemental-site-search
Make sure you don't have FulltextSearchable enabled in _config.php.
To add the search form, add $SearchForm anywhere in your template.
For example in Header.ss
...
<div class="search-form">
$SearchForm
</div>
...
Lastly you can override the template for the result page.
app/templates/Layout/Page_results.ss
<div id="Content" class="searchResults">
<h1>$Title</h1>
<% if $Query %>
<p class="searchQuery"><strong>You searched for "{$Query}"</strong></p>
<% end_if %>
<% if $Results %>
<ul id="SearchResults">
<% loop $Results %>
<li>
<a class="searchResultHeader" href="$Link">
<% if $MenuTitle %>
$MenuTitle
<% else %>
$Title
<% end_if %>
</a>
<p>$Content.LimitWordCountXML</p>
<a class="readMoreLink" href="$Link"
title="Read more about "{$Title}""
>Read more about "{$Title}"...</a>
</li>
<% end_loop %>
</ul>
<% else %>
<p>Sorry, your search query did not return any results.</p>
<% end_if %>
<% if $Results.MoreThanOnePage %>
<div id="PageNumbers">
<% if $Results.NotLastPage %>
<a class="next" href="$Results.NextLink" title="View the next page">Next</a>
<% end_if %>
<% if $Results.NotFirstPage %>
<a class="prev" href="$Results.PrevLink" title="View the previous page">Prev</a>
<% end_if %>
<span>
<% loop $Results.Pages %>
<% if $CurrentBool %>
$PageNum
<% else %>
<a href="$Link" title="View page number $PageNum">$PageNum</a>
<% end_if %>
<% end_loop %>
</span>
<p>Page $Results.CurrentPage of $Results.TotalPages</p>
</div>
<% end_if %>
</div>
Then finally add ?flush=1 to the URL and you should see the new template.
You can customize the search form by defining the following values in your app/_config/site-search.yml:
jbennecker\ElementalSiteSearch\SearchForm:
search_field_min_length: 3 # Minimum length of the search query (default: 4)