Posting children to a Structure

Question

This question is a follow up of a previous question see: (Entry Form - Multiple Entries & Entry Type & Parent)

I am trying to add multiple children to a pre-existing multi level structure:

Level 1
--Level 2 (The parent where I am adding the children)
----Child 1
----Child 2
..etc 

My Controller:

public function actionSaveAnimals(){
$this->requirePostRequest();

if($rodentsData = craft()->request->getParam('rodent')){
  $rodentErrors = [];
  foreach ($rodentsData as $rodentData){
      if (array_key_exists('entryId', $rodentData) && $rodentId = $rodentData['entryId']) {
          if (!$rodent = craft()->elements->getElementById($rodentId)) {
              throw new Exception('Could not find rodent with the given Id');
          }
      } else {
          $rodent = new EntryModel();
          $rodent->typeId = 6; // change your entryType Id here
          $rodent->sectionId = craft()->request->getParam('sectionId');
          $rodent->parentId = craft()->request->getParam('parentId');
          $rodent->authorId = craft()->request->getParam('authorId');
      }

      $rodent->getContent()->setAttributes($rodentData['fields']);

      if (!craft()->entries->saveEntry($rodent)) {
          $rodentErrors[] = $rodent->getErrors();
      }else{
          $rodentErrors = [];
      }
  }
  // include errors of each item
  craft()->urlManager->setRouteVariables(array(
      'rodentErrors' => $rodentErrors
  ));
}

}

And my form:

<form method="post" accept-charset="UTF-8">
{{ getCsrfInput() }}
{# your plugin name and function name #}
<input type="hidden" name="action" value="experiment/SaveAnimals">
{# the id of your section for me its 4 you need to change this value to your section Id #}
<input type="hidden" name="sectionId" value="4">
{# enable the entry #}
<input type="hidden" name="enabled" value="1">
{# id of your entry leave it blank to insert a new entry, insert a id to change an existing entry#}
<input type="hidden" name="entryId" value="">
<input type="hidden" name="parentId" value="{{ entry.id }}">
<input type="hidden" name="authorId" value="{{ currentUser.id }}">

<div class="fields">
  <div class="field mt3">
    <label class="f5 lh-copy pb2" for="title">Amount of Animals</label>
    {#<input class="pa3 input-reset ba bw0 br2 w-100" type="number" id="Cage__Amount" placeholder="5" max="10" required>#}
    <input type="text" name="rodent[0][fields][title]" value="Add Identifier">
    <input type="text" name="rodent[1][fields][title]" value="Add Identifier">
  </div>
</div>

<div class="field submit mv4">
  <button class="bg-dark-blue white ph3 pv2 input-reset pointer ba bw0 f5 dib lh-copy w-100" type="submit">Create experiment</button>
</div>

I am currently getting this error:

Trying to get property of non-object

From EntriesService.php(468)

if ($entry->getSection()->type != SectionType::Structure)

Any help much appreciated!

Answer 1

The section ID was incorrect - set correctly and this function works.