site: add clusters and modules

Re-organize content and navigation around the concept of clusters
and modules. Elements that have suggested field names are displayed
prominently near the top of each cluster.

I am still exploring how to present the clusters and modules better.
Perhaps as a badge on each element?

site/layouts/_default/home.html

@@ -11,11 +11,14 @@
           <nav id="navbar-navigation" class="navbar navbar-light bg-light flex-column align-items-start p-3">
             <a class="navbar-brand" href="#">Navigation</a>
             <nav class="nav nav-pills flex-column">
-              <a class="nav-link" href="#metadata">Metadata</a>
+              <a class="nav-link" href="#clusters-and-modules">Clusters and Modules</a>
+              <a class="nav-link" href="#metadata-elements">Metadata Elements</a>
               <nav class="nav nav-pills flex-column">
-                <a class="nav-link ms-3 my-1" href="#required-metadata">Required Metadata</a>
-                <a class="nav-link ms-3 my-1" href="#optional-metadata">Optional Metadata</a>
+                <a class="nav-link ms-3 my-1" href="#cluster-global">Global</a>
+                <a class="nav-link ms-3 my-1" href="#cluster-certification">Certification</a>
+                <a class="nav-link ms-3 my-1" href="#cluster-impact">Impact</a>
               </nav>
+              <a class="nav-link" href="#schema-extensions">Schema Extensions</a>
               <a class="nav-link" href="#feedback">Feedback</a>
             </nav>
           </nav>
@@ -26,8 +29,31 @@
         <h1>ISEAL Core Metadata Set Specification</h1>
         <p class="lead">This page provides a reference specification for the ISEAL Core Metadata set (ISEAL Core).</p>
         <p>ISEAL Core is a set of structured terms and vocabularies that can be used as metadata to describe, share, and reuse different digital resources across the ISEAL Community and broader set of stakeholders. The resources described using the ISEAL are those that sustainability systems typically collect, curate, manage, use, publish and archive. They may be datasets, published research, certificates, videos, images, maps, or other organizational documentation.</p>
-        <h2 id="metadata">Metadata</h2>
-        <p>ISEAL Core currently uses elements from the following standard metadata schemas:</p>
+        <h2 id="clusters-and-modules">Clusters and Modules</h2>
+        <p>Metadata elements in ISEAL Core are organized around three <em>clusters</em> and ten <em>modules</em>.</p>
+        <ul>
+          <li>Global</li>
+          <ul>
+            <li>Coverage</li>
+            <li>Form</li>
+            <li>Provenance</li>
+            <li>Scope</li>
+            <li>Status</li>
+          </ul>
+          <li>Certification</li>
+          <ul>
+            <li>Certificate</li>
+            <li>Certificate Holder, Owner or Certified organization</li>
+            <li>Certified Resource or Site</li>
+            <li>Certifying Body</li>
+          </ul>
+          <li>Impact</li>
+          <ul>
+            <li>Impact</li>
+          </ul>
+        </ul>
+        <h2 id="metadata-elements">Metadata Elements</h2>
+        <p>ISEAL Core uses elements from the following standard metadata schemas:</p>
         <ul>
           <li><a href="https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#section-3">Dublin Core Elements</a> with the <code>dc</code> namespace prefix. These were <a href="http://www.dlib.org/dlib/July95/07weibel.html">originally designated in 1995</a> and are considered deprecated and superseded by Dublin Core Terms. Due to legacy code in the DSpace software we must still use some of these.</li>
           <li><a href="https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#section-2">Dublin Core Terms</a> with the <code>dcterms</code> namespace prefix. These contain the original Dublin Core Terms and add others. As of 2008 these supercede the original Dublin Core Elements.</li>
@@ -37,18 +63,51 @@
           <li><strong>Encoding</strong>: metadata should be encoded in UTF-8 to ensure correct representation of international characters.</li>
           <li><strong>Applicability</strong>: metadata should describe what the item is, <em>not what it isn't</em>. If a metadata element is not applicable you should not use it. Do not enter "N/A"!</li>
         </ul>
-        <h3 id="required-metadata">Required Metadata</h3>
+        <h3 id="cluster-global">Global Cluster</h3>
+        <p>
+        {{/* Note: we need to use two ranges for each cluster because it is */}}
+        {{/* not possible to re-use Hugo's paginate object unless you use   */}}
+        {{/* the same exact arguments each time.                            */}}
 
-        {{ range where (where site.RegularPages "Type" "terms") "Params.required" "==" true }}
+        <!-- TODO: note that not all terms have field names so this list is not exclusive! -->
+        {{ range where (where site.RegularPages "Type" "terms") "Params.cluster" "==" "Global" }}
+        {{-  if .Params.field -}}
+          <a class="btn btn-sm btn-outline-primary m-1" href="#{{ .Params.slug }}">{{ .Params.field }}</a>
+        {{-  end -}}
+        {{ end }}
+        </p>
+
+        {{ range where (where site.RegularPages "Type" "terms") "Params.cluster" "==" "Global" }}
         <div class="col">
           {{ .Render "term" }}
         </div>
         {{ end }}
 
-        <h3 id="optional-metadata">Optional Metadata</h3>
-        <p>These elements are optional, but we strongly suggest that you include as many as you can.</p>
+        <h3 id="cluster-certification">Certification Cluster</h3>
+        <p>
+        {{ range where (where site.RegularPages "Type" "terms") "Params.cluster" "==" "Certification" }}
+        {{-  if .Params.field -}}
+          <a class="btn btn-sm btn-outline-primary m-1" href="#{{ .Params.slug }}">{{ .Params.field }}</a>
+        {{-  end -}}
+        {{ end }}
+        </p>
 
-        {{ range where (where site.RegularPages "Type" "terms") "Params.required" "==" false }}
+        {{ range where (where site.RegularPages "Type" "terms") "Params.cluster" "==" "Certification" }}
+        <div class="col">
+          {{ .Render "term" }}
+        </div>
+        {{ end }}
+
+        <h3 id="cluster-impact">Impact Cluster</h3>
+        <p>
+        {{ range where (where site.RegularPages "Type" "terms") "Params.cluster" "==" "Impact" }}
+        {{-  if .Params.field -}}
+          <a class="btn btn-sm btn-outline-primary m-1" href="#{{ .Params.slug }}">{{ .Params.field }}</a>
+        {{-  end -}}
+        {{ end }}
+        </p>
+
+        {{ range where (where site.RegularPages "Type" "terms") "Params.cluster" "==" "Impact" }}
         <div class="col">
           {{ .Render "term" }}
         </div>

site/layouts/_default/term.html

@@ -3,7 +3,7 @@
           <thead>
             <tr class="table-secondary">
               <th colspan="2">
-                {{- .Params.title | markdownify -}}
+                <span class="">{{ .Params.title | markdownify }}</span>
                 {{- with .Params.required -}}
                 <div class="badge-required">
                   <span class="badge bg-primary align-middle">Required</span>
@@ -17,6 +17,10 @@
               <td class="col-2 field-name">Label</td>
               <td>{{ .Name | markdownify }}</td>
             </tr>
+            <tr>
+              <td class="col-2 field-name">Module</td>
+              <td>{{ .Params.module | markdownify }}</td>
+            </tr>
             {{ with .Params.description }}
             <tr>
               <td class="col-2 field-name">Definition</td>