Fix curated resources search (#737)

* Fix curated resources search: raise result limit and enable prefix matching

The search was capped at 30 results (now 500), hiding most matches.
Also, search terms required exact whole-word matches — e.g. "registra"
wouldn't find "registration". Now the last word in a query uses prefix
matching while earlier words still require full-word matches, keeping
results relevant without noise.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Require all search terms to match (AND logic)

Previously each query word matched independently (OR), so "pre-registration"
returned more results than "registration" because "pre" matched extra items.
Now every query word must appear in an item for it to be included. Multi-word
phrases and prefix matching still contribute to ranking/weight.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Treat hyphens as optional so pre-registration = preregistration

Content normalization produces both forms (split and joined) for
hyphenated words. Query normalization strips hyphens so both
"pre-registration" and "preregistration" search identically.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Replace search list with isotope card filtering

Instead of loading index.json and rendering a separate results list,
the search input now filters the existing resource cards in-place via
isotope. Supports AND logic (all words must match), prefix matching,
and works alongside the category filter buttons. Shows a count of
matching resources.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Strip hyphens from card text so preregistration matches pre-registration

Card text contains original hyphens, so searching "preregistration"
wouldn't find cards with "pre-registration". Now hyphens are stripped
from both the query (split to words) and card text (before matching).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: LukasWallrich

layouts/shortcodes/staticsearch.html

@@ -1,6 +1,5 @@
-{{/* {{ partial "_shared/banner.html" . }} */}}
-<p id="loading">Loading search data...</p>
-<label for="searchBox">Enter full keywords below to find relevant resources for you or use the filters below:</label>
-<input disabled placeholder="Enter search text" type="text" name="searchBox" id="searchBox" class="w-100" />
-<div id="results"></div>
-<script src="{{"/js/search.js" | urlize | relURL }}"></script>
+<div class="project-search-box mb-3">
+  <label for="projectSearch">Search resources by keyword:</label>
+  <input type="search" id="projectSearch" class="project-search form-control" placeholder="Search resources..." autocapitalize="off" autocomplete="off" spellcheck="false">
+  <small class="search-count text-muted"></small>
+</div>

static/js/search.js

@@ -7,12 +7,22 @@ var searchFn = function () {
         "of", "at", "by", "for", "with", "to", "then", "no", "not",
         "so", "too", "can", "and", "but"];
     var normalizer = document.createElement("textarea");
+    // Content normalize: "pre-registration" → " pre registration preregistration "
     var normalize = function (input) {
         normalizer.innerHTML = input;
         var inputDecoded = normalizer.value;
-        return " " + inputDecoded.trim().toLowerCase().replace(/[^0-9a-z ]/gi, " ").replace(/\s+/g, " ") + " ";
+        var text = inputDecoded.trim().toLowerCase();
+        var withSpaces = text.replace(/-/g, " ");
+        var joined = (text.match(/\w+-[\w-]+/g) || []).map(function (w) { return w.replace(/-/g, ""); }).join(" ");
+        return " " + (withSpaces + " " + joined).replace(/[^0-9a-z ]/gi, " ").replace(/\s+/g, " ") + " ";
     }
-    var limit = 30;
+    // Query normalize: strip hyphens so "pre-registration" → " preregistration "
+    var normalizeQuery = function (input) {
+        normalizer.innerHTML = input;
+        var inputDecoded = normalizer.value;
+        return " " + inputDecoded.trim().toLowerCase().replace(/-/g, "").replace(/[^0-9a-z ]/gi, " ").replace(/\s+/g, " ") + " ";
+    }
+    var limit = 500;
     var minChars = 2;
     var searching = false;
     var render = function (results) {
@@ -41,10 +51,22 @@ var searchFn = function () {
         });
         return weightResult;
     };
-    var search = function (terms) {
+    var search = function (terms, requiredWords) {
         var results = [];
         searchHost.index.forEach(function (item) {
             if (item.tags) {
+                // AND logic: all query words must appear somewhere in the item
+                var allText = item.title + item.subtitle + item.description + item.content;
+                item.tags.forEach(function (tag) { allText += tag; });
+                var allMatch = true;
+                for (var w = 0; w < requiredWords.length; w++) {
+                    if (!~allText.indexOf(requiredWords[w])) {
+                        allMatch = false;
+                        break;
+                    }
+                }
+                if (!allMatch) return;
+
                 var weight_1 = 0;
                 terms.forEach(function (term) {
                     if (item.title.startsWith(term.term)) {
@@ -82,7 +104,7 @@ var searchFn = function () {
         if (searching) {
             return;
         }
-        var term = normalize($("#searchBox").val()).trim();
+        var term = normalizeQuery($("#searchBox").val()).trim();
         if (term === lastTerm) {
             return;
         }
@@ -107,14 +129,23 @@ var searchFn = function () {
                 }
                 var newTerm = str.trim();
                 if (newTerm.length >= minChars && stopwords.indexOf(newTerm) < 0) {
+                    var isPrefix = (j === terms.length - 1);
                     termsTree.push({
                         weight: weight,
-                        term: " " + str.trim() + " "
+                        term: " " + str.trim() + (isPrefix ? "" : " ")
                     });
                 }
             }
         }
-        search(termsTree);
+        // Build required words for AND logic (each query word must appear)
+        var requiredWords = [];
+        for (var r = 0; r < terms.length; r++) {
+            if (terms[r].length >= minChars && stopwords.indexOf(terms[r]) < 0) {
+                var isLast = (r === terms.length - 1);
+                requiredWords.push(" " + terms[r] + (isLast ? "" : " "));
+            }
+        }
+        search(termsTree, requiredWords);
         searching = false;
         var endSearch = new Date();
         $("#results").append("<p><small>Search took " + (endSearch - startSearch) + "ms.</small></p>");

themes/academic/assets/js/academic.js

@@ -648,20 +648,58 @@
       }
 
       $container.imagesLoaded(function () {
+        let projectFilter = $section.find('.default-project-filter').text();
+        let projectSearchTerms = null;
+
         // Initialize Isotope after all images have loaded.
         $container.isotope({
           itemSelector: '.isotope-item',
           layoutMode: layout,
           masonry: {
             gutter: 20
           },
-          filter: $section.find('.default-project-filter').text()
+          filter: function () {
+            let $this = $(this);
+            let filterMatch = projectFilter ? $this.is(projectFilter) : true;
+            if (!filterMatch) return false;
+            if (!projectSearchTerms) return true;
+            let text = $this.text().replace(/-/g, '');
+            return projectSearchTerms.every(function (re) { return re.test(text); });
+          }
+        });
+
+        // Text search on cards.
+        let searchTimeout;
+        let $searchCount = $section.find('.search-count');
+        $section.find('.project-search').keyup(function () {
+          clearTimeout(searchTimeout);
+          let input = this;
+          searchTimeout = setTimeout(function () {
+            let val = $(input).val().trim();
+            if (val) {
+              // Split on hyphens/spaces, require all words (AND logic, prefix matching)
+              let words = val.replace(/-/g, ' ').split(/\s+/).filter(function (w) { return w.length >= 2; });
+              projectSearchTerms = words.length ? words.map(function (w) {
+                return new RegExp(w.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'i');
+              }) : null;
+            } else {
+              projectSearchTerms = null;
+            }
+            $container.isotope();
+            let count = $container.isotope('getFilteredItemElements').length;
+            let total = $container.find('.isotope-item').length;
+            if (projectSearchTerms) {
+              $searchCount.text(count + ' of ' + total + ' resources shown');
+            } else {
+              $searchCount.text('');
+            }
+          }, 200);
         });
 
         // Filter items when filter link is clicked.
         $section.find('.project-filters a').click(function () {
-          let selector = $(this).attr('data-filter');
-          $container.isotope({filter: selector});
+          projectFilter = $(this).attr('data-filter');
+          $container.isotope();
           $(this).removeClass('active').addClass('active').siblings().removeClass('active all');
           return false;
         });