Tag Archives: Railo

Enforcing the use of routes in CFWheels

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If you really like routing (you’d find that really funny if you’re Australian) and want to enforce their use in all linkTo(), urlFor() and startFormTag() function calls.. Do as I do..

Put the function below into your /controllers/Controller.cfc

<!--- /controllers/Controller.cfc --->
<cffunction name="urlFor" access="public" output="false" hint="ensure routes are used for all urls">
    <cfif ! StructKeyExists(arguments, "noroute") && ! ( (StructKeyExists(url, "controller") && url.controller == "wheels") || StructKeyExists(arguments, "url") )>
      <cfif ! (StructKeyExists(arguments, "route") && Len(arguments.route) gt 0)>
        <cfthrow message="Please use a route rather than an action.. Thanks!">
      </cfif>
    </cfif>
    <cfreturn core.urlFor(argumentCollection=arguments)>
  </cffunction>
</code>

This overrides, the core urlFor() method, checking for the existence of a route argument.. UNLESS, the controller is “wheels” which probably means you’re using the test framework or managing a plugin. There is also a way to bypass the route nazi.. by using the noroute=true arguments.

Happy routing.. Teehee!

Run your CFWheels database migrations automatically on application start

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It’s no secret that I’m a massive fan of the Coldfusion on Wheels framework.. and there are a couple of tools that I use in my deployment process that are invaluable to me.

One of those is the DBMigrate plugin. I recently came up with a way to automatically migrate to the latest database version when the application first starts.

This can be useful/essential when:

  • Your deployment process doesn’t use post-deploy hooks
  • You want to make your application more portable
  • You want to simplify your deployment script

Essentially, it calls a couple of the plugin’s methods whilst doing a little array-fu.

/events/onapplicationstart.cfm

<cfscript>
// migrate database
_dbm = {}
// create a pointer to the dbmigrate plugin
_dbm.plugin = application.wheels.plugins.dbmigrate
// create an array of available migrations sorted by version in descending order
_dbm.available = []
for(item in _dbm.plugin.getAvailableMigrations()){
_dbm.available.Append(item.version)
}
ArraySort(_dbm.available, "numeric", "desc")
// migrate to the most recent version
_dbm.plugin.migrateTo(_dbm.available[1])
</cfscript>

There are a few caveats:

  • It will execute every time the application loads OR is manually reloaded via the reload=true parameter (though it’s fairy lightweight when there are no migrations to execute)
  • It will execute on every server in your cluster
  • There is (currently) no error handling
  • It could disable your application if your migrations fail