First I need to create my grails app from the command line(assuming I have installed it first)
# grails create-app webtimer
Then enter interactive-mode by typing
# grails
To create a domain-class for we simply type
# create-domain-class worklog.User
Now, we need to add some properties to the user, a unique field called email of type String.
String email
So to check that we have a running application, we create some views and run our app locally to see what we have:
# generate-all worklog.User # run-app(notice that you get autocompletion by pressing "tab" in interactive-mode)
The app should now be running on localhost:8080/worklog :
Now we get down to business. I need authentication! Luckily there are some grails-plugins for that, lets see... I kind of like the sound of the oauth-plugin, so I think I will try that. Installation: always install it by adding it to the BuildConfig-file(as opposed to installing it command-line-style). That way it´s easy to keep track of what you have installed, and upgrade will be less painful. At the time, the version is 1.0, so I add this to my BuildConfig in the plugin-section (current version is 2.0.1, check if it has been updated):
compile ':oauth:2.0.1'
Thats it? Nope. We need to configure it to authenticate with google. In my Config.groovy, I need to add
oauth {
providers {
google {
api = GoogleApi
key = '1057869129521.apps.googleusercontent.com'
secret = 'zaOsvnGrxyZ0kRciJJew0xbb'
successUri = '/authenticate/success'
failureUri = '/authenticate/failure'
scope = 'https://www.googleapis.com/auth/userinfo.email'
callback = "${grails.serverURL}/oauth/callback"
}
}
}
Now, replace the key and with some sane value and same for the secret (my settings wont work well for you, and will change in a bit). Obtain this from google (go to the apis console link). Of course, now we need to create the success and failure uris...
# create-controller worklog.auth.AuthenticateWow. Ok, lets see if we can poke around with this. In the index.gsp, we add some code:
<oauth:connect provider="google">Log in with google</oauth:connect>And in our Authenticate-controller, we add a service and a method for the "authenticate/success"
OauthService oauthService
def success() {
Token googleAccessToken = session[oauthService.findSessionKeyForAccessToken('google')]
def userInfo = oauthService.getGoogleResource(googleAccessToken, 'https://www.googleapis.com/oauth2/v1/userinfo')
def mail = JSON.parse(userInfo.body)
render "Authenticated as $mail"
}
Test and check, heres my result;
