codeigniter echo查询结果数组

Question

Method inside the model:

    public function get_fichas(){

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

    return $query->result();

}

Then, I'm trying to pass this data to the controller. Method on the controller:

public function listar_fichas(){

    $data['fichas_info'] = $this->fichas_model->get_fichas();
    $this->load->view('templates/header');
    $this->load->view('fichas/listar_fichas', $data);

}

When I try to list the data in a view, I get the following error:

"Fatal error: Cannot use object of type stdClass as array"

Here is how I'm trying to list:

View file:

<?php foreach($fichas_info as $row){?>
    <table>
        <tr>
            <td><?php echo $row['cod_produto'] ;?></td>
            <td><?php echo $row['nome_produto'] ;?></td>
            <td ><?php echo $row['versao'];?></td>
        </tr>
    </table>
<?php }?>

I think I'm doing something wrong on the view. Perhaps I'm passing the data incorrectly to the view. Can someone please tell what I'm doing wrong? Thank you!

Answer 1

<td><?php echo $row['cod_produto'] ;?></td>
<td><?php echo $row['nome_produto'] ;?></td>
<td><?php echo $row['versao'];?></td>

should be:

<td><?php echo $row->cod_produto ;?></td>
<td><?php echo $row->nome_produto ;?></td>
<td ><?php echo $row->versao;?></td>

The result set is an object, so each column name is a property of the object. You were accessing them as an index of an array.

Answer 2

You are fetching results as an object, but trying to access the data as an array. There are a couple of things you could do to resolve this:

Continue to access the data in the view by changing your foreach loop to the following:

    <?php foreach($fichas_info as $row) { ?>
        <table>
            <tr>
                <td><?php echo $row->cod_produto; ?></td>
                <td><?php echo $row->nome_produto; ?></td>
                <td><?php echo $row->versao; ?></td>
            </tr>
        </table>
    <?php endforeach; ?>

This will access the data in your object. Another option would be to change the get_fichas() function in your model to return the result as an array. Instead of using the result() function, you could use the result_array() function. To demonstrate:

    public function get_fichas(){
        $query = $this->db->query("SELECT * FROM fichas;");
        return $query->result_array();
    }

This will return an array to your controller instead of an object. You can then loop through this array in your view like you would any other array.

Have a look at http://ellislab.com/codeigniter/user-guide/database/results.html for more information on generating query results with CodeIgniter.

Answer 3

Do this :

<?php foreach($fichas_info as $row){?>
<table>
   <tr>
    <td><?php echo $row->cod_produto ;?></td>
     <td><?php echo $row->nome_produto ;?></td>
    <td ><?php echo $row->versao;?></td>
  </tr>
  </table>
  <?php }?>

Answer 4

Since you are fetching results as object. So you should use like this in your view.

<?php foreach($fichas_info as $row){?>
<table>
       <tr>
        <td><?php echo $row->cod_produto ;?></td>
         <td><?php echo $row->nome_produto ;?></td>
        <td ><?php echo $row->versao;?></td>
      </tr>
      </table>
      <?php }?>

Answer 5

I think you need this:

<?php foreach($fichas_info as $row){?>
<table><tr>
    <td><?php echo $row->cod_produto ;?></td>
     <td><?php echo $row->nome_produto ;?></td>
    <td ><?php echo $row->versao;?></td>
</tr></table>
<?php }?>