Need to create a chart using a MySQL table in CodeIgniter 3

Question

I need to make a dynamic table using the following table. It doesn't matter whether it's from ChartJS or Google Chart. I need to take "Blood Types" for the Y axis as labels and for the X axis I need to take the number of rows for the each blood type where "isAvailable" equals 1.

Table

I tried above way, it gets the data to the view but need to rewrite the code for each blood type so it is not very efficient. I need to know is there any better way?

Controller

public function bloodTypesChart()
    {
        $query =  $this->db->query("SELECT COUNT(PacketID) as count,(BloodType) as blood_type FROM packets WHERE (isAvailable) = '1'");

        $packetCount = $this->db->count_all_results();

        $record = $query->result();
        $chartData = [];

        foreach($record as $row) {
            $chartData['label'][] = 'O+';
            $chartData['data'][] = $packetCount;
        }
        $chartData['chart_data'] = json_encode($chartData);
        $this->load->view('insight',$chartData);
    }

Answer 1

This is a better and a simple solution. Avoided using php loops to get data.

public function bloodTypesChart()
    {
        $query=" SELECT BloodType as blood_type, COUNT(PacketID) as mycount 
            FROM packets 
            WHERE isAvailable = 1 
            GROUP BY blood_type
         ";    

        $chartData = [];
        $blood_types = $this->db->query($query)->result_array();

        foreach($blood_types as $row)
        {
                $chartData['label'][] = $row['blood_type'];
                $chartData['data'][] = $row['mycount'];
        }
        $chartData['chart_data'] = json_encode($chartData);
        $this->load->view('insight',$chartData);
    }