Fatal error: Call to a member function num_rows() on a non-object

[bazz]

Hi Guys,

 

Wondering if anyone can help me with this?

 

 

Here is the error message I get;

 

Fatal error: Call to a member function num_rows() on a non-object 

 

And the line of code causing the error

 

if ($langQuery->num_rows() > 0)

 

Can you see anything wrong?

 

thanks in advance

 

bazz

 

 

 

[discomatt]

Yes. $langQuery has not been defined as an object.

[bazz]

Thanks for your reply discomatt.

 

How should it read? i'm sorry for being a proper noob *but I am lol*

 

Regards

 

bazz

[discomatt]

That's hard to say, at some point you should be defining it as an object using

 

$langQuery = new someClassName;

[bazz]

Here is the entire page

 

<?php


class Applicationmodel extends Model
{
	//Constructor
	function Applicationmodel()
	{
			parent::Model();
	}
	function getApplications($onlyBasic = false)
	{
			if ($onlyBasic == true) $appQuery = $this->db->query('SELECT * FROM applications WHERE user_id=0');
			else  $appQuery = $this->db->query('SELECT * FROM applications');
			if ($appQuery->num_rows() > 0)
			{
					$applications = array();
					foreach ($appQuery->result_array() as $appRow)
					{
							$applications[$appRow['application_id']] = $appRow;
					}
					return $applications;
			}
			else  return false;
	}
	function getUserApplications()
	{
			$this->db->select('application_ids');
			$this->db->where('user_id', $this->session->userdata('user_id'));
			$this->db->limit(1, 0);
			$userAppQuery = $this->db->get('users_applications');
			if ($userAppQuery->num_rows() > 0)
			{
					$userAppRow = $userAppQuery->result_array();
					$appQuery = $this->db->query('SELECT * FROM applications WHERE application_id IN (' . $userAppRow[0]['application_ids'] . ')');
					if ($appQuery->num_rows() > 0)
					{
							$applications = array();
							foreach ($appQuery->result_array() as $appRow)
							{
									$applications[$appRow['application_id']] = $appRow;
							}
							return $applications;
					}
					else  return false;
			}
			else  return false;
	}
	function isApplication($appName)
	{
			$this->db->where('application_name', $appName);
			$this->db->limit(1, 0);
			$appQuery = $this->db->get('applications');
			if ($appQuery->num_rows() > 0)
			{
					$appRow = $appQuery->result_array();
					return $appRow[0]['application_id'];
			}
			else  return false;
	}
	function isUserCanAccessTheApplication($applicationId)
	{
			$this->db->select('application_ids');
			$this->db->where('user_id', $this->session->userdata('user_id'));
			$this->db->limit(1, 0);
			$userAppQuery = $this->db->get('users_applications');
			if ($userAppQuery->num_rows() > 0)
			{
					$userAppRow = $userAppQuery->result_array();
					$userAppArray = explode(',', $userAppRow[0]['application_ids']);
					if (array_search($applicationId, $userAppArray) === false) return false;
					else  return true;
			}
			else  return false;
	}
	function getLanguages()
	{
			$this->db->select('lang_code, lang_name');
			$this->db->from('languages');
			$langQuery = $this->db->get();
			$languages = array();
			if ($langQuery->num_rows() > 0)
			{
					foreach ($langQuery->result_array() as $langRow)
					{
							$languages[] = $langRow;
					}
			}
			return $languages;
	}
}

?>

[discomatt]

Somewhere in your Model class ( not listed here ) there is a var called $db that is supposed to be filled with what looks to be a singleton DB class.

 

I'm leaning to believe this is not your code, and you're trying to play with things a little beyond your current PHP knowledge. Please correct me if I'm wrong.