How to pass a variable from model to controller in codeigniter - php

Question

How can I pass a variable from the model to the controller?
Here is my model:
public function edititem($id){
$query = $this->db->query('SELECT * FROM tblitem WHERE item_id = "$id"');
foreach ($query->result() as $row){
$name = $row->item_name;
$description = $row->item_description;
$price = $row->item_price;
}
And here is my controller
public function editItem(){
$this->load->helper('form');
$this->load->model('ItemModel');
$this->ItemModel->edititem($this->input->get('id'));
$name = $this->input->post('name');
$description = $this->input->post('description');
$price = $this->input->post('price');
$data['items'] = $this->ItemModel->itemlist();
$this->load->view('item/item_edit',$data);
}
In which when the user clicks "Edit Item", it will populate the form with the selected row.
<form action="<?php echo base_url().'item/edititem' ?> " method="post">
<div class="form-group">
<label for="name">Name</label>
<input type="name" class="form-control" id="name" name="name" placeholder="Name" value="<?php echo set_value('name'); ?>">
</div>
<div class="form-group">
<label for="description">Description</label>
<textarea class="form-control" rows="3" name="description"><?php echo set_value('description'); ?></textarea>
</div>
<div class="form-group">
<label class="sr-only" for="price">Amount (in pesos)</label>
<div class="input-group">
<div class="input-group-addon">Php</div>
<input type="text" class="form-control" name="price" id="price" placeholder="Amount" value="<?php echo set_value('price'); ?>">
<div class="input-group-addon">.00</div>
</div>
</div>
<button type="submit" class="btn btn-primary">EDIT ITEM</button>
</form>

Answer 1

If it is from model to controller, You can make an array and store that 3 fields. (I assume there is only single row returned by your query since you are using id as where).
$result = array();
foreach ($query->result() as $row)
{
$result['name'] = $row->item_name;
$result['description'] = $row->item_description;
$result['price'] = $row->item_price;
}
return $result;
You can access it in the controller using:
$data['items']['name'];
$data['items']['description']
$data['items']['price']
Or in your view as
$items['name'];
$items['description'];
$items['price'];

Answer 2

Here your model looks like this
public function edititem($id){
$query = $this->db->query('SELECT * FROM tblitem WHERE item_id = "$id"');
if ($query->num_rows() > 0) {
$row = $query->row_array(); // row_array return single row and result_array return multiple row
return $row['dt'];
And your controller looks like this
public function editItem(){
$this->load->helper('form');
$this->load->model('ItemModel');
$item_details=$this->ItemModel->edititem($this->input->get('id'));
here you use foreach loop
foreach ($item_details as $key=>$value){
//do this in $data array
} //now you can use the specific data to your view.
$this->load->view('item/item_edit',$data);
}

Answer 3

Your Model:
This may useful if your want to return a specific 1 row without using result()
public function edititem($id){
$this->db->select('*');
$this->db->from('tblitem ');
$this->db->where('item_id ',$id);
return $query = $this->db->get()->custom_row_object(0, 'ItemModel');
}
Your Controller: Call the edititem($id) from ItemModel (your model)
public function editItem(){
$item_id=$this->uri->segment(3); //added this
$this->load->helper('form');
$this->load->model('ItemModel');
$item_details=$this->ItemModel->edititem($item_id); //added this
$data['item_name'] = $item_details->name;
$data['item_desc'] = $item_details->description;
$data['item_price'] = $item_details->price;
//now you can use the specific data to your view.
$this->load->view('item/item_edit',$data);
}
In your view, you can use the variable like:
$item_name;
$item_desc;
$item_price;
eg:
<input type="text" name="item_name" value="<?php echo $item_name;?>" />