title: I'm Unsure on Params Hash
body: <p>I am trying to get to grips with the params hash in RoR.  I'm not sure if I'm missing something, but my understanding so far is that the params hash is a hash containing either form entered data or query string data related to a POST request. Where <code>params[:item]</code> creates a symbol where the relevant POST data/query is stored.  Again not sure if I'm correct on this, any enlightenment would be much appreciated. Thanks</p>