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POundefined method `first_name'
 

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    <p>Can anyone shed light on this for me? </p> <p>undefined method `first_name' for #</p> <p>Here is the show.html</p> <pre><code>&lt;p id="notice"&gt;&lt;%= notice %&gt;&lt;/p&gt; &lt;div id="container"&gt; &lt;p&gt; &lt;b&gt;First name:&lt;/b&gt; &lt;%= @artist.firstname %&gt; &lt;/p&gt; &lt;p&gt; &lt;b&gt;Second name:&lt;/b&gt; &lt;%= @artist.surname %&gt; &lt;/p&gt; &lt;p&gt; &lt;b&gt;About:&lt;/b&gt; &lt;%= @artist.about %&gt; &lt;/p&gt; &lt;div id="comments"&gt; &lt;h2&gt;Comments&lt;/h2&gt; &lt;%= render :partial =&gt; "shared/comment", :collection =&gt; @artist.comments%&gt; &lt;/div &lt;/div&gt; &lt;%= render :partial =&gt; "image", :collection =&gt; @artist.images %&gt; &lt;%= link_to 'Edit', edit_artist_path(@artist) %&gt; | &lt;%= link_to 'Back', artists_path %&gt; &lt;%= link_to 'show', images_path %&gt; </code></pre> <p>Here is the partial </p> <pre><code> &lt;div class="comment"&gt; &lt;p&gt; &lt;span class="commentator"&gt;&lt;%= comment.commentator.display_name %&gt; say's&lt;/span&gt; &lt;%= comment.comment %&gt; &lt;/p&gt; &lt;/div </code></pre> <p>Here is the friend view </p> <pre><code>class Friends &lt; ActiveRecord::Base attr_accessible :firstname, :surname has_many :comments, :as =&gt; :commentator, :class_name =&gt;"Commentable" def display_name "#{self.firstname} #{self.surname}" end end </code></pre> <p>This is the friends controller</p> <pre><code>class FriendsController &lt; ApplicationController # GET /friends # GET /friends.xml def index @friends = Friend.all respond_to do |format| format.html # index.html.erb format.xml { render :xml =&gt; @friends } end end # GET /friends/1 # GET /friends/1.xml def show @friend = Friend.find(params[:id]) respond_to do |format| format.html # show.html.erb format.xml { render :xml =&gt; @friend } end end # GET /friends/new # GET /friends/new.xml def new @friend = Friend.new respond_to do |format| format.html # new.html.erb format.xml { render :xml =&gt; @friend } end end # GET /friends/1/edit def edit @friend = Friend.find(params[:id]) end # POST /friends # POST /friends.xml def create @friend = Friend.new(params[:friend]) respond_to do |format| if @friend.save format.html { redirect_to(@friend, :notice =&gt; 'Friend was successfully created.') } format.xml { render :xml =&gt; @friend, :status =&gt; :created, :location =&gt; @friend } else format.html { render :action =&gt; "new" } format.xml { render :xml =&gt; @friend.errors, :status =&gt; :unprocessable_entity } end end end # PUT /friends/1 # PUT /friends/1.xml def update @friend = Friend.find(params[:id]) respond_to do |format| if @friend.update_attributes(params[:friend]) format.html { redirect_to(@friend, :notice =&gt; 'Friend was successfully updated.') } format.xml { head :ok } else format.html { render :action =&gt; "edit" } format.xml { render :xml =&gt; @friend.errors, :status =&gt; :unprocessable_entity } end end end # DELETE /friends/1 # DELETE /friends/1.xml def destroy @friend = Friend.find(params[:id]) @friend.destroy respond_to do |format| format.html { redirect_to(friends_url) } format.xml { head :ok } end end end </code></pre> <p>I am trying to make it so a friend can leave a comment on an artists page but I keep getting the above error. </p> <p>I am very new to Ruby so I apologise if I have left anything out.</p>
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