Google Analytics Lift Module

Inserts the Google Analytics async tracking code into a Lift application.

That is, if you supply a Google Analytics tracking ID, the head of all pages will have the Google tracking Javascript code automatically added.

Using this module

1. Include the dependency:

    // For Lift 3.2.x (Scala 2.12):
    "net.liftmodules" %% "google-analytics_3.2" % "1.2.0"
   

   Note that from 1.2.0 onwards this module switched to using Google Tag Manager (via #8). The versions below use the older ga.js approach.

    // For Lift 3.1.x (Scala 2.12):
    "net.liftmodules" %% "google-analytics_3.1" % "1.1.0-SNAPSHOT"
   
    // For Lift 3.0.x (Scala 2.12, 2.11):
    "net.liftmodules" %% "google-analytics_3.0" % "1.1"
   
    // For Lift 3.0.x (Scala 2.10):
    "net.liftmodules" %% "google-analytics_3.0" % "1.0-SNAPSHOT"
   
    // For Lift 2.6.x (Scala 2.11):
    "net.liftmodules" %% "google-analytics_2.6" % "1.1-SNAPSHOT"
   
    // For Lift 2.6.x (Scala 2.9 and 2.10):
    "net.liftmodules" %% "google-analytics_2.6" % "1.0"
   
    // For Lift 2.5.x (Scala 2.9 and 2.10):
     "net.liftmodules" %% "google-analytics_2.5" % "1.0"
   

2. In your application's Boot.boot code:

      bootstrap.liftmodules.GoogleAnalytics.init
   

3. Finally, set your tracking code as the google.tag.manager.id in your Props file. For example, add the following to src/main/resources/production.default.props

     google.tag.manager.id=GTM-XXXXXX
   

   ...obviously replacing XXXXXX with the code Google issued you with. Be sure to start your Lift app with -Drun.mode=production flag (or set the value of google.tag.manager.id in your dev props file).

Conditional behaviour

To selectively control if analytics is enable, provide a ()=>Boolean function to the init method:

import bootstrap.liftmodules.GoogleAnalytics

GoogleAnalytics.init { () => S.cookieValue("cookie_consent") isDefined }

There's some sugar if you want it:

import bootstrap.liftmodules.GoogleAnalytics
import GoogleAnalytics.dsl._

GoogleAnalytics.init {
 only when S.cookieValue("ckns_policy").isDefined
}

End user cookie notification

To assist towards compliance to the EU Privacy and Electronic Communications Regulations (cookie laws) this module includes an end-user notification trigger. It may not be right for you, and it is your responsibility to review you compliance with any regulation.

GoogleAnalytics.alertUser ( only when S.cookieValue("cookie_consent").isEmpty ) {
  JsAlert("We set Cookies")
}

The alertUser method expects a test of type ()=>Boolean and then a ()=>JsCmd.

Development

When working on this module, if you want to see the effect in a Lift project without having to publish the module, you can change your Lift project to remove the dependency on the published module and instread add a local dependency. E.g.,

// project/LoalModuleDev.scala
import sbt._
object LocalModuleDev extends Build {
  lazy val root = Project("", file(".")) dependsOn(google)
  lazy val google = ProjectRef(uri("../liftmodules-googleanalytics"), "LiftModule")
}

When you build your Lift project, SBT will automatically compile changes in the local Google Analytics module.