modify tracker.js to take a siteId and insert that into pageviews table. add siteId to tracking snippet.

assets/src/js/components/SiteSettings.js

@@ -101,6 +101,7 @@ class SiteSettings extends Component {
 	o.async=1; o.src=t; o.id='fathom-script';
 	m.parentNode.insertBefore(o,m)
 })(document, window, '//stats.usefathom.com/tracker.js', 'fathom');
+fathom('set', 'siteId', '${props.site.trackingId}');
 fathom('trackPageview');
 </script>
 <!-- / Fathom -->`}

assets/src/js/tracker.js

@@ -1,12 +1,18 @@
 'use strict';
 
 let queue = window.fathom.q || [];
-let trackerUrl = '';
-
-const commands = {
-  "trackPageview": trackPageview,
-  "setTrackerUrl": setTrackerUrl,
+let config = {
+  'siteId': '',
+  'trackerUrl': '',
 };
+const commands = {
+  "set": set,
+  "trackPageview": trackPageview,
+};
+
+function set(key, value) {
+  config[key] = value;
+}
 
 // convert object to query string
 function stringifyObject(obj) {
@@ -93,15 +99,7 @@ function findTrackerUrl() {
   return el ? el.src.replace('tracker.js', 'collect') : '';
 }
 
-function setTrackerUrl(v) {
-  trackerUrl = v;
-}
-
 function trackPageview() { 
-  if(trackerUrl === '') {
-    trackerUrl = findTrackerUrl();
-  }
-
   // Respect "Do Not Track" requests
   if('doNotTrack' in navigator && navigator.doNotTrack === "1") {
     return;
@@ -149,10 +147,12 @@ function trackPageview() {
     u: data.pagesViewed.indexOf(path) == -1 ? 1 : 0,
     nv: data.isNewVisitor ? 1 : 0, 
     ns: data.isNewSession ? 1 : 0,
+    sid: config.siteId,
   };
 
+  let url = config.trackerUrl || findTrackerUrl()
   let i = document.createElement('img');
-  i.src = trackerUrl + stringifyObject(d);
+  i.src = url + stringifyObject(d);
   i.addEventListener('load', function() {
     let now = new Date();
     let midnight = new Date(now.getFullYear(), now.getMonth(), now.getDate(), 24, 0, 0);

pkg/api/collect.go

@@ -53,16 +53,17 @@ func (c *Collector) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 	// get pageview details
 	pageview := &models.Pageview{
-		ID:           q.Get("id"),
-		Hostname:     parseHostname(q.Get("h")),
-		Pathname:     parsePathname(q.Get("p")),
-		IsNewVisitor: q.Get("nv") == "1",
-		IsNewSession: q.Get("ns") == "1",
-		IsUnique:     q.Get("u") == "1",
-		IsBounce:     q.Get("b") != "0",
-		Referrer:     parseReferrer(q.Get("r")),
-		Duration:     0,
-		Timestamp:    now,
+		ID:             q.Get("id"),
+		SiteTrackingID: q.Get("sid"),
+		Hostname:       parseHostname(q.Get("h")),
+		Pathname:       parsePathname(q.Get("p")),
+		IsNewVisitor:   q.Get("nv") == "1",
+		IsNewSession:   q.Get("ns") == "1",
+		IsUnique:       q.Get("u") == "1",
+		IsBounce:       q.Get("b") != "0",
+		Referrer:       parseReferrer(q.Get("r")),
+		Duration:       0,
+		Timestamp:      now,
 	}
 
 	// push pageview onto channel to be inserted (in batch) later

pkg/api/sites.go

@@ -30,7 +30,7 @@ func (api *API) SaveSiteHandler(w http.ResponseWriter, r *http.Request) error {
 
 	// generate tracking ID if this is a new site
 	if s.ID == 0 && s.TrackingID == "" {
-		s.TrackingID = randomString(8)
+		s.TrackingID = generateTrackingID()
 	}
 
 	if err := api.database.SaveSite(s); err != nil {
@@ -55,10 +55,14 @@ func (api *API) DeleteSiteHandler(w http.ResponseWriter, r *http.Request) error
 	return respond(w, http.StatusOK, envelope{Data: true})
 }
 
+func generateTrackingID() string {
+	return randomString(2) + "-" + randomString(2)
+}
+
 func randomString(len int) string {
 	bytes := make([]byte, len)
 	for i := 0; i < len; i++ {
-		bytes[i] = byte(65 + rand.Intn(25)) //A=65 and Z = 65+25
+		bytes[i] = byte(97 + rand.Intn(25)) //a=97 and z = 97+25
 	}
 
 	return string(bytes)

pkg/datastore/sqlstore/pageviews.go

@@ -33,7 +33,7 @@ func (db *sqlstore) InsertPageviews(pageviews []*models.Pageview) error {
 	}
 
 	// generate placeholders string
-	placeholderTemplate := "(?, ?, ?, ?, ?, ?, ?, ?, ?, ?),"
+	placeholderTemplate := "(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?),"
 	placeholders := strings.Repeat(placeholderTemplate, n)
 	placeholders = placeholders[:len(placeholders)-1]
 	nPlaceholders := strings.Count(placeholderTemplate, "?")
@@ -47,19 +47,20 @@ func (db *sqlstore) InsertPageviews(pageviews []*models.Pageview) error {
 	for i := range pageviews {
 		j = i * nPlaceholders
 		values[j] = pageviews[i].ID
-		values[j+1] = pageviews[i].Hostname
-		values[j+2] = pageviews[i].Pathname
-		values[j+3] = pageviews[i].IsNewVisitor
-		values[j+4] = pageviews[i].IsNewSession
-		values[j+5] = pageviews[i].IsUnique
-		values[j+6] = pageviews[i].IsBounce
-		values[j+7] = pageviews[i].Referrer
-		values[j+8] = pageviews[i].Duration
-		values[j+9] = pageviews[i].Timestamp
+		values[j+1] = pageviews[i].SiteTrackingID
+		values[j+2] = pageviews[i].Hostname
+		values[j+3] = pageviews[i].Pathname
+		values[j+4] = pageviews[i].IsNewVisitor
+		values[j+5] = pageviews[i].IsNewSession
+		values[j+6] = pageviews[i].IsUnique
+		values[j+7] = pageviews[i].IsBounce
+		values[j+8] = pageviews[i].Referrer
+		values[j+9] = pageviews[i].Duration
+		values[j+10] = pageviews[i].Timestamp
 	}
 
 	// string together query & execute with values
-	query := `INSERT INTO pageviews(id, hostname, pathname, is_new_visitor, is_new_session, is_unique, is_bounce, referrer, duration, timestamp) VALUES ` + placeholders
+	query := `INSERT INTO pageviews(id, site_tracking_id, hostname, pathname, is_new_visitor, is_new_session, is_unique, is_bounce, referrer, duration, timestamp) VALUES ` + placeholders
 	query = db.Rebind(query)
 	_, err := db.Exec(query, values...)
 	if err != nil {

pkg/models/site.go

@@ -3,6 +3,6 @@ package models
 // Site represents a group for tracking data
 type Site struct {
 	ID         int64  `db:"id" json:"id"`
-	TrackingID string `db:"tracking_id" json:"tracking_id"`
+	TrackingID string `db:"tracking_id" json:"trackingId"`
 	Name       string `db:"name" json:"name"`
 }