Set value in $_POST variable to validate through Codeigniter

Question

I'm creating the WebSocket based application with Codeigniter. So, data is coming as a JSON string(not a POST Method). I want to use the Codeigniter's built-in form_validation method to validate the data received as JSON.

this is what I tried so far to set the variable so I can access it through $this->input->post('variable_name') but.

Try #1

$_POST['variable_name'] = !isset($data['variable_name']) ? NULL : $data['variable_name'];

Try #2

$variable_name = !isset($data['variable_name']) ? NULL : $data['variable_name'];
$this->form_validation->set_value("variable_name", $variable_name);

But when I use $this->input->post('variable_name') it returns NULL.

If I remember currectly, CI Input class extracts all the data from the post and caches it in an internal variable, so when you use $this->input->post you are getting values from that cache. That means, that you need to alter the Input class, or set the data to the $_POST array before CI loads. — Ron Dadon
– Ron Dadon, Commented Nov 11, 2015 at 14:22
If so, its a strange behaviour. There should be a way to set values manually. :( — Muaaz Khalid
– Muaaz Khalid, Commented Nov 11, 2015 at 14:25
Not really, it makes sense - your POST data should not change from the moment your script starts. — Ron Dadon
– Ron Dadon, Commented Nov 11, 2015 at 14:26

Muaaz Khalid · Accepted Answer · 2015-12-09 19:31:28Z

9

Here is how I achieved it. Although, It doesn't seems to be an accurate solution but its simple and there is no work around.

I added only one line before execution of form validations

$_SERVER["REQUEST_METHOD"] = "POST";

and then set the variable like this

$_POST['post_var'] = "value";

Now set the validation rules and perform validation.

that's it :)

answered Dec 9, 2015 at 19:31

Muaaz Khalid

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Muaaz Khalid Over a year ago

You got the answer, that's my pleasure :)

Narf · Accepted Answer · 2015-11-11 15:31:59Z

6

There's a method called set_data() that was introduced specifically to allow validation of non-POST inputs.

http://www.codeigniter.com/userguide3/libraries/form_validation.html#validating-an-array-other-than-post

answered Nov 11, 2015 at 15:31

Narf

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katwekibs Over a year ago

This should be the chosen answer.

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