CodeIgniter - validation not happens - php

Question

I am doing a validation using Code Igniter. I have a simple form which used to create / update a product record.
public function productSave($params) {
if (!$this->validate($params)) {
return FALSE;
}
$id_col_value = $params['product_id'];
if ($id_col_value) {
// update
$this->db->where("product_id", $id_col_value);
return $result = $this->db->update("product", $params);
} else {
// insert
return $result = $this->db->insert("product", $params);
}
}
My validation function looks like this,
protected function validate($params) {
$this->form_validation->set_rules("name", "", "trim|required");
$this->form_validation->set_data($params);
if ($this->form_validation->run() == FALSE){
$errors = $this->form_validation->error_array();
if ( $errors ){
return FALSE;
}
}
return TRUE;
}
Now the problem
When inserting (when product_id is null) it validates. But when we have a product_id it does not validates.
My payload ($params) looks like this,
Array
(
[product_id] => 1 // this is NULL when we do inserting
[name] => Test Name
)
I can't figure out what I am doing wrong here and why the validation not work for updating. I use the same code for both cases.
Please Help! Thanks in advance!

Answer 1

I figure it out.
"We have to call the set_data() method before defining any validation
rules."
Which is in the Documentation of CI.
So, basically, I call $this->form_validation->set_data($params); first
and then, I call $this->form_validation->set_rules("name", "", "trim|required");.
This will solve the problem.
Hope this helps anyone with the same error!!!

Answer 2

Check your params array. I have checked it using $params = array("product_id" => 34, "name" => "Test Name") & it's working perfectly.
If you have no inserted data with that product_id, it will not work. Suppose you have passed product_id=3 & this id is not available in table. Then how should it work?