codeigniter - call model's function in view - php

Question

Is it OK to call model's function in views?
I need to make a table with table-child insides it.
Just like this:
row1
row1.1
row1.2
row2
row2.1
row2.2
row3
row3.1
row3.2
CONTROLLER:
$data['test'] = $this->model_test->get_parent_row()->result_array();
$this->load->view('test_view', $data);
I use multi-foreach in views; first foreach to show every single parent row, and the sub-foreach to show the row-child. But it means I have to call a query to get the row-child based on the parent row.
Any advise?

Answer 1

To keep the logic in the controller, I would recommend to create two different views. One with the child-row data, and one with the parent data. The secret is to pass the parameter TRUE when calling the view to return the data into a variable instead of printing it out to the browser. Something like this in the controller:
$parent = $this->model_test->get_parent_row()->result_array();
$children = ''; // INITIATE STRING TO STORE ALL CHILD VIEWS...
// LOOP THROUGH PARENTS...
foreach($parent as $child){
// CREATE YOUR QUERY TO GET CHILD ROW HERE...
// ADJUST TO WHATEVER YOUR MODEL NAME OR PARAMETERS ARE:
$child_row = $this->model->get_child_row($child)->result_array();
// THE TRUE PARAMETER RETURNS DATA FROM THE VIEW INSTEAD OF OUTPUT TO THE BROWSER
$children .= $this->load->view('child_view', $child_row, TRUE);
}
$this->load->view('parent_view', array('test'=>$children));
Hope you understand the logic. Find more info about views in the documentation (scroll down to the end): https://www.codeigniter.com/user_guide/general/views.html
Easier would be to create a model that returns all data at once, and then pass the array to one view where you can loop through all parents and their children at once.

Answer 2

You can do this array structure inside your model
Try below logic to maintain parent-child logic and you can directly pass it to your view.
On model:
function your_function_name() {
//select parent category
$parent_array = array();
$query1 = $this->db->get('parent-table');
foreach($query1->result() as $row1) {
$child_array = array();
// query for children
$query2 = $this->db->get('chilr-table')->where(id, $row1['id']);
foreach($query2->result() as $row2) {
$child_array[] = array(
'id' => $row2['id'],
'name' => $row2['name']
);
}
$parent_array[] = array(
'id' => $row1['filter_group_id'],
'name' => $row1['name'],
'children' => $child_array
);
}
return $parent_array;
}
On Controller :
Load your model
$this->load->model('model_name');
pass to view
$data['test'] = $this->model_name->your_function_name();
$this->load->view('test_view', $data);
I hope it will help you