[#853] Add Google Analytics to templates

If present in the Index settings object, the ga code snippet will be
added to generated templates.

census/views/base.html

@@ -189,11 +189,11 @@
   </script>
   <script data-main="/scripts/site" src="/bower_components/requirejs/require.js"></script>
 
-  {% if site.settings.google_analytics_key %}
+  {% if site.settings.google_analytics_key or google_analytics_key %}
   <!-- configured google analytics specific to this deployment -->
   <script type="text/javascript">
     var _gaq = _gaq || [];
-    _gaq.push(['_setAccount', '{{site.settings.google_analytics_key}}']);
+    _gaq.push(['_setAccount', '{{ site.settings.google_analytics_key or google_analytics_key}}']);
     _gaq.push(['_trackPageview']);
 
     (function() {

index/generate.js

@@ -21,7 +21,7 @@ const i18n = require('i18n-abide');
 
 const godiGetData = require('./metalsmith-godi-getdata');
 const godiDataFiles = require('./metalsmith-godi-updatedatafiles');
-const godiAncillaryFiles = require('./metalsmith-godi-ancillaryfiles');
+const godiIndexSettings = require('./metalsmith-godi-indexsettings'); // Add data from Index settings.
 const jsonToFiles = require('metalsmith-json-to-files');
 
 const templatePath = path.join(__dirname, '../census/views/');
@@ -63,7 +63,7 @@ Metalsmith(__dirname)
   .use(godiGetData({domain: domain, year: 2016})) // Populate metadata with data from Survey
   .use(jsonToFiles({use_metadata: true}))
   .use(godiDataFiles()) // Add file metadata to each entry file populated by json-to-files
-  .use(godiAncillaryFiles({domain: domain}))
+  .use(godiIndexSettings({domain: domain})) // Add data from Index settings.
   .use(markdown())
   .use(permalinks())
   .use(paths({property: 'paths', directoryIndex: 'index.html'}))

index/metalsmith-godi-ancillaryfiles.js → index/metalsmith-godi-indexsettings.js

@@ -2,25 +2,30 @@
 
 const _ = require('lodash');
 
-const debug = require('debug')('metalsmith-godi-ancillaryfiles');
+const debug = require('debug')('metalsmith-godi-indexsettings');
 
 const models = require('../census/models');
 
 module.exports = plugin;
 
 /**
- * GODI Metalsmith plugin that locates anillary page content present in the
- * Index settings object and adds each page as a file to be built by
- * Metalsmith.
+ * GODI Metalsmith plugin that works with the Index setting data loaded from
+ * the CMS.
  *
- * Ancillary pages have a key ending with `_page`, e.g. about_page.
+ * It locates anillary page content present in the Index settings object and
+ * adds each page as a file to be built by Metalsmith. Ancillary pages have a
+ * key ending with `_page`, e.g. about_page.
+ *
+ * It also adds the Google Analytics code to the metalsmith metadata for use
+ * in templates.
  *
  * @return {Function}
  */
 
 function plugin(options) {
   return (files, metalsmith, done) => {
     let metadata = metalsmith.metadata();
+
     debug('Adding ancillary pages.');
     models.Site.findById(options.domain)
     .then(site => {
@@ -40,6 +45,11 @@ function plugin(options) {
           metadata.ancillary_pages.push(keyName);
         }
       });
+
+      // Add GA code snippet to metadata
+      if (indexSettings.google_analytics_key) {
+        metadata.google_analytics_key = indexSettings.google_analytics_key;
+      }
       done();
     })
     .catch(err => done(err));