Creating my first module

Question

I have finally managed to get some kind of control panel area created, but cant figure out how to transfer my array over to the view page.

My aim is to create an array from the database, then display the value of that field in the view page.

mcp index function public function index() {

$this->EE->cp->set_variable('cp_page_title', $this->EE->lang->line('currency_module_name'));

    $this->EE->load->helper('form');
    $this->EE->load->library('table');
    $this->EE->load->library('form_validation');         

    $query = $this->EE->db->query("SELECT * FROM exp_currency");

    $data = array (
        "usd" => $query->row('usd'),
        "eur" => $query->row('eur'),
        "gbp" => $query->row('gbp')
    );      

    return $this->EE->load->view('add_currencies', $data, TRUE);

}

View file

<?=form_open()?>

    <?php

        $this->table->set_heading(
            lang('USD'),
            lang('EUR'),
            lang('GBP')
        );

        $this->table->add_row(
            form_input('usd', set_value('usd', $data['usd']), 'id="usd"'),          
            form_input('eur', set_value('eur', $data['eur']), 'id="eur"'),                          
            form_input('gbp', set_value('gbp', $data['gbp']), 'id="gbp"')                           
        );

        echo $this->table->generate();

        $this->table->clear(); 

    ?>

    <input type="submit" class="submit" value="<?=lang('update_currencies')?>" />

<?=form_close()?>

If anyone can point me in the right direction, that would be great :)

Answer 1

When you pass an array of data on to a view file, the keys become the variable names in that view file. So...

$data = array(
    'foo' => 'bar',
    'lorem' => 'ipsum'
);

return $this->EE->load->view('my_file', $data, TRUE);

...will mean that in the my_file view file you can then use the variables $foo and $lorem.

In your case, that would mean you can use $usd, $eur and $gbp. That might not be too useful, so I'd pass on those in their own array:

$data = array(
    'currencies' => array(
        "usd" => $query->row('usd'),
        "eur" => $query->row('eur'),
        "gbp" => $query->row('gbp')
    )
);

...and in your view file:

foreach ($currencies AS $key => $val)
{
    form_input($key, set_value($key, $val), 'id="'.$key.'"');
}

and so on.