Ajax request passing variable and asks DB for WHERE = variable - php

Question

This is my AJAX call:
function ck_loader() {
row_count = $('.grid-item').length || 0;
$.ajax({
type: "POST",
url: baseURL + "welcome/load_more",
data: {offset: row_count, numbdata: permaData},
datatype: 'json',
success: function (response) {
if (response === "") {
$grid.packery();
}
} else {
var $response = $(response);
$(".grid").append($response);
$grid.packery( 'addItems', $response);
$grid.packery();
}
},
error: function (jqXHR, textStatus, errorThrown) {
console.log(jqXHR, textStatus, errorThrown);
//alert("ERROR");
}
});
so offset counts number of elements (rows) that are visable at the moment, and it helps control the offset of database (loading 15 elements per call)
numbdata: permaData is a variable where I'm saving the filter selection, so my menu has a filter selection, and data from there is saved in a variable (when someone press "video" filter, it saves "video" inside of permaData)
It connects to:
public function load_more()
{
$offset = $this->input->post('offset');
if($offset)
{
$new_rows = $this->postovi_model->get_next_10($offset);
if(isset($new_rows))
{
$data['users'] = $new_rows;
//this will return (echo) html to the ajax success function
//CI takes care of making the correct response headers - sweet
$this->load->view('user_rows_view', $data);
}
else
{
echo ""; //return an empty string
}
}
}
There is a model included in this PHP script:
public function get_next_10($offset = 0)
{
$this->db->limit(15, $offset);
$this->db->order_by('date', 'asc');
$query = $this->db->get("postovi");
return $query->num_rows() > 0 ? $query->result_array() : NULL;
}
}
In this model I am missing WHERE and the WHERE filter is the same as $permaData.
Every filter should reset $Offset back to 0 and run Database for that content.
permaData starts with "*" before any filter is selected.

Answer 1

Change your model function to take two parameters instead of one:
public function get_next_10($offset = 0, $numbdata = false)
and then just call it like:
$new_rows = $this->postovi_model->get_next_10($offset, $numbdata);
while numbdata would be (you're passing that via the AJAX call anyway):
$numbdata = $this->input->post('numbdata');
and finally, just add the WHERE clause in the model.