Error creating childNode

A server error page is thrown when attempting to create a childNode.
Example:
curl --verbose --request POST --header "Content-Type: application/json" -d "{relationshipName:'parent_child_test',parent:'1',child:'5'}" http://localhost:8080/api/childNode/none --cookie cookies.txt
Result:
* About to connect() to localhost port 8080 (#0)
*   Trying ::1... connected
* Connected to localhost (::1) port 8080 (#0)
> POST /api/childNode/none HTTP/1.1
> User-Agent: curl/7.21.2 (x86_64-apple-darwin10.5.0) libcurl/7.21.2 OpenSSL/1.0.0c zlib/1.2.6 libidn/1.19
> Host: localhost:8080
> Accept: */*
> Cookie: JSESSIONID=D8903A17887303AEC13D6E24F2CA1B11
> Content-Type: application/json
> Content-Length: 59
> 
< HTTP/1.1 500 Internal Server Error
< Server: Apache-Coyote/1.1
< Content-Type: text/html;charset=UTF-8
< Content-Language: en-US
< Transfer-Encoding: chunked
< Date: Wed, 23 May 2012 21:54:40 GMT
< Connection: close
< 
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                    <ul>
                        <li><a href="/">List</a></li>
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                                <li><a href="/nodeType/create">Create NodeType</a></li>
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        <h1>Error 500: Internal Server Error</h1>
<dl class="error-details">
<dt>URI</dt><dd>/api/childNode/none</dd>
<dt>Class</dt><dd>groovy.lang.MissingPropertyException</dd><dt>Message</dt><dd>No such property: id for class: java.lang.String</dd></dl><h2>Around line 100 of <span class="filename">grails-app/controllers/com/dtosolutions/ChildNodeController.groovy</span></h2>
<pre class="snippet"><code class="line"><span class="lineNumber">97:</span> </code><code class="line"><span class="lineNumber">98:</span>    def save() {</code><code class="line"><span class="lineNumber">99:</span></code><code class="line error"><span class="lineNumber">100:</span>      Node parent = Node.get(params.parent.id.toLong())</code><code class="line"><span class="lineNumber">101:</span>     Node child = Node.get(params.child.id.toLong())</code><code class="line"><span class="lineNumber">102:</span>       </code><code class="line"><span class="lineNumber">103:</span>      def ntparents = NodeTypeRelationship.findByChild(child.nodetype)</code></pre><h2>Around line 20 of <span class="filename">grails-app/controllers/com/dtosolutions/ChildNodeController.groovy</span></h2>
<pre class="snippet"><code class="line"><span class="lineNumber">17:</span>     switch(request.method){</code><code class="line"><span class="lineNumber">18:</span>            case &quot;POST&quot;:</code><code class="line"><span class="lineNumber">19:</span>             def json = request.JSON</code><code class="line error"><span class="lineNumber">20:</span>              this.save()</code><code class="line"><span class="lineNumber">21:</span>                return</code><code class="line"><span class="lineNumber">22:</span>             break</code><code class="line"><span class="lineNumber">23:</span>          case &quot;GET&quot;:</code></pre><h2>Trace</h2><pre class="stack">   Line | Method
-&gt;&gt; 100 | save    in ChildNodeController.groovy
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    20 | api     in     &#39;&#39;
|   886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
|   908 | run     in     &#39;&#39;
^   680 | run . . in java.lang.Thread
</pre>
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* Closing connection #0
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dtolabs / yana2

Error creating childNode #120
