I'm trying to retrieve a string from a form dropdown field in a update page from my database, view below.
$option = array(NULL => 'Selecione uma categoria');
foreach ($categories_list->result() as $category):
$option[$category->categoryID] = $category->categoryTitle;
endforeach;
echo form_dropdown('categoryname', $option, set_value('categoryname', $post->categoryTitle));
However, dropdown does not display the bank string. Could someone help me?
I discovered the problem that was located on this line:
$option[$category->categoryID] = $category->categoryTitle;
What I have corrected for:
$option[$category->categoryTitle] = $category->categoryTitle;
And it already worked with the code:
echo form_dropdown('categoryname', $option, $post->categoryTitle);
In the selection box, you did not have the IDs as the value of each option , but rather the text that is equal to the caption presented to the user.
From what I see in the code of your question, the only wrong thing is to use set_value() , removing it should work as expected.
Note: set_value() is used to set the value of a regular input or text box. It does not work with checkboxes.
You can learn more at CodeIgniter: User's Guide .
It's almost at the bottom of the page.
In your controller you'll see something like this:
$categoriesList = $this->db->get('categories')->result();
Then you can generate your select with the help of helper form_dropdown :
$options = array(null => "Selecione uma categoria");
foreach ($categoriesList as $cat) {
$options[$cat->categoryID]=$cat->categoryTitle;
}
echo form_dropdown('categoryname', $options, $post->categoryTitle);