MongoDB Membership Provider on AppHarbor

Question

I have an application on AppHarbor, and I've finally gotten it to work. One thing that's eluded me though is getting my Membership provider to work. I'm using MongoLab for my database, and it works fine with the rest of my application. When, I I try to use Membership, I get this error:

Unable to connect to server localhost:27017: No connection could be made because the target machine actively refused it 127.0.0.1:27017.

And the offending line is in web.config:

<add name="MongoDBMembershipProvider" type="MongoDB.Web.Providers.MongoDBMembershipProvider"....

Could someone please shed some light on my situation?

Answer 1

As friism mentions, you need some code to read the connectionString from an appSetting. Thankfully osuritz has already done the work in a fork of MongoDB.Web on github.

You will need to download the above fork, build & change your existing dll reference to use the new dll.

Then...

change your config:

<appSettings>
   <add key="MONGOLAB_URL" value="mongodb://localhost/ASPNETDB"/>    
</appSettings>

... the above value will get replaced by appharbor/mongolab (and if you have other parts of the app that work, then this is correct)

<providers>
   <clear />
   <add name="MongoDBMembershipProvider" type="MongoDB.Web.Providers.MongoDBMembershipProvider" 
    applicationName="/"  appSettingsConnectionStringKey="MONGOLAB_URL" collection="Users"
        enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false"
        maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" />
</providers>

So in the above config, it has the appSettingsConnectionStringKey parameter. The code within the customised provider, reads the appSettingsConnectionStringKey value 'MONGOLAB_URL' and then uses that to read the ConfigurationManager.AppSettings["MONGOLAB_URL"] and it obviously, MUST match the appsetting Key name above.