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POIssue with collection_select / mongoid / mongodb
 

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  1. POIssue with collection_select / mongoid / mongodb
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    <p>I am having some trouble with a rails project using mongoid.</p> <p>The problem is when creating/editing a new post.</p> <p>I would like to select a topic/category for post (entertainment/news/ misc).</p> <p>At first I tried the method in railscast 238 (near the end) using a key value</p> <p><a href="http://railscasts.com/episodes/238-mongoid" rel="nofollow">http://railscasts.com/episodes/238-mongoid</a></p> <p>But I kept getting a BSON ObjectID error. While searching for a solution I found topics discussing it, but the fix mentioned is already in the version of mongoid I'm using.</p> <p>So I switched things up. I have no idea if this is good practice or not, but I ran out of ideas. Instead of the railscast method, I used the code below. However, I get this error...</p> <blockquote> <p>"undefined method `metadata' for "4d4165b3fcf1ee14e0000049":String"</p> </blockquote> <pre><code>post model class Post include Mongoid::Document field :link field :title field :synopsis field :added_on, :type =&gt; Date validates_presence_of :link embeds_many :replies embeds_one :topic end topic model class Topic include Mongoid::Document field :category, :type =&gt; String embedded_in :post, :inverse_of =&gt; :topics end </code></pre> <p>&nbsp;</p> <pre><code>_form.html.erb &lt;div class="field"&gt; &lt;%= f.label :topic_id %&gt; &lt;%= f.collection_select :topic, Topic.all, :id, :category, :prompt =&gt; "Select a Topic" %&gt; &lt;/div&gt; </code></pre> <p>I have recently tried changing from embedded_in/embeds_one to references_one/referenced_in. I am also told "Topic.all" is wrong, but I don't know what to change that to to get it to work.</p> <p>Gemfile information...</p> <pre><code>gem "mongoid", "2.0.0.rc.6" gem "bson_ext", "~&gt; 1.2" </code></pre> <p>Anything stick out? </p> <p>Edit:</p> <p>Updated to 2.0.0.rc.7 still can't get it.</p> <p>Tried the key method in the railscast video just for fun. Same "BSON::InvalidObjectId in PostsController#update" error. </p>
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