grails create-plugin clickpass
.- Add
ClickpassController.groovy
tograils-app/controller
. - Add
User.groovy
tograils-app/domain
. This is a dummy file required for the plugin to be packaged. - Add
ClickpassTagLib.groovy
tograils-app/taglib
. - Add
_clickpass.gsp
tograils-app/views
. - Add
welcome.gsp
tograils-app/views/clickpass
ClickpassController.groovy
class ClickpassController {
def openidService
def index = { response.sendError(404) }
def welcome = {
def user = null
if (openidService.isLoggedIn(session)) {
user = User.findByOpenid(openidService.getIdentifier(session))
if (user == null) {
def urlString = "http://www.clickpass.com/process_new_openid?
site_key=Xr2zelexGn&process_openid_registration_url=
http%3A%2F%2Flocalhost%3A8080%2Fsocialr%2Fclickpass%2F
register&new_openid_completion_url=http%3A%2F%2F
localhost%3A8080%2Fsocialr%2Fclickpass%2Fwelcome&
requested_fields=nickname%2Cemail&required_fields=&
nickname_label=Nickname&email_label=Email"
redirect(url:urlString)
}
}
}
def merge = {
def user = User.findByUsernameAndPassword(params.user_id, params.password)
def urlredirect =
java.net.URLDecoder.decode(params.clickpass_merge_callback_url) +
"&userid_authenticated=false"
if (user == null) {
redirect(url:urlredirect)
}
user.openid = openidService.getIdentifier(session)
if (user.save()) {
redirect(controller:'clickpass',action:'welcome')
}
else {
redirect(url:urlredirect)
}
}
def register = {
def user = new User()
user.username = params.nickname
user.email = params.email
user.openid = openidService.getIdentifier(session)
user.password = ''
if (user.save()) {
flash.message = "Thank you for signing up."
redirect(controller:'clickpass', action:'welcome')
}
else {
flash.message = "There is a problem signing up."
redirect(controller:'clickpass', action:'index')
}
}
}
index:
Nothing for the index to do so set up a 404.welcome:
When a user is authenticated by OpenID, a search is made to see whether that OpenID is in the database, if not then redirect to the registration page. TheurlString
is obtained from Clickpass so this needs to be changed for each sitemerge:
A user, authenticated by OpenID, who wants to attach the ID to his account.register:
Create a new user account with the OpenID and save it.
User.groovy
Nothing in it except for the class declaration.
ClickpassTagLib.groovy
class ClickpassTagLib {
static namespace = "clickpass"
def bar = { attrs, body ->
try {
out << render(template:"/clickpass", contextPath:"${pluginContextPath}")
}
catch(Exception e) {
log.error(e)
}
}
}
- The namespace allows one to use it, i.e
<clickpass:foobar/>
, in the code instead of the generic<g:foobar/>
- For usage in an app, all that is required is
<clickpass:bar/>
to be inserted into the html. - The
/
in the template name is necessary to revert the path to the project base, otherwise it would go looking in the main appviews
folder. - The
contextPath:"${pluginContextPath}"
is not mentioned in the documention but after setting the path to the base, this sets it to the correct pluginviews
folder.
_clickpass.gsp
The html for this is generated by Clickpass, after registering your site, you can just copy and paste. This creates the Clickpass login bar.
welcome.gsp
<html>
<head>
<link rel="openid.server" href="http://www.clickpass.com/openid_server" />
<link rel="openid.delegate" href="http://clickpass.com/public/iseec" />
<title>Welcome</title>
</head>
<body>
<h1>Welcome</h1>
<openid:identifier />
<openid:ifLoggedIn>
<openid:logoutLink>Logout</openid:logoutLink>
</openid:ifLoggedIn>
</body>
</html>
- This is a simple welcome page after the user successfully logs in and his account is verified.
- One can replace it with their own or redirect from this page.
- The OpenID is displayed as well as a logout link.
Aftermath
grails package-plugin
to get it all into a zip file.grails install-plugin /path/to/plugin/grails-example-0.1.zip
to install it into an app.
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