Creating Simple Modules, Tutorial

edited February 2011 in Modules

I have went through the simple modules tutorial and I have found few minor typo mistakes and I have also one question regarding the required form fields.

1) Create the Articles Model
class Articles_model extends Base_module_model {}
class Articles_model extends Base_module_record {} // => Should be class Article_model

2) The Tree Method

function tree()
{ ...
$categories_to_articles = $CI->categories_to_articles_model->find_all('', 'name asc'); => I had to specify second parameter - otherwise I got ambiguity error.

3) Adding an After Save Hook

Everything works fine, when one selects a category for an article. If there is no category selected I get db error after hitting "save" button. It could be probably good to make category selection required, but I did not find an easy way how. Here comes my question - Can it be somehow done via public $required array?


  • edited 5:24AM
    Thanks for the bug report. I've updated the user guide and the repo. The category field actually isn't a field in the articles table so you may need to use a hook and get the validation object to add validation like so:
    $this->get_validation()->add_rule('categories', 'required, 'This field is required', $_POST['categories']);
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