Cannot pass variables from Controller to Model

Public controller properties can be accessed within model context in the way $this->test_message , "magic" is used for this. But I don't use this feature for passing values, it is handy for accessing objects that the controller contains. Within a model you can write $value = $this->session->userdata('value'); instead of $CI = &get_instance(); $value = $CI->session->userdata('value');

Anyway, if you want to pass to the controller a property value (don't like this), better declare it within the corresponding controller public $test_message;

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