The code for the retrieving a particular conspiracy

actors.rs

/// The DbExecutor is contains the database connection which will be used by all of the
/// message handlers
pub struct DbExecutor(pub SqliteConnection);

impl Actor for DbExecutor {
   type Context = SyncContext<Self>;
}

/// Sent to the DbExecutor to fetch the conspiracy with the given page_id
pub struct GetConspiracy {
    pub page_id: String 
}

/// Sets up the Result that is returned by the GetConspiracy handler
/// which is either the Conspiracy model or an error message
impl Message for GetConspiracy {
    type Result = Result<Conspiracy, String>;
}

impl Handler<GetConspiracy> for DbExecutor {
   type Result = Result<Conspiracy, String>;

   /// The first two parameters are what we care about, the instance of self is where
   /// I get the database connection from.  The msg paramter contains the page_id that 
   /// was passed as part of the message and will be used to query the db for the requested
   /// conspiracy. It makes a single call and returns the results of the results of the query.
   fn handle(&mut self, msg: GetConspiracy, _: &mut Self::Context) -> Self::Result
   {
        db::get_conspiracy_by_id(&self.0, &msg.page_id)
   }
}