first commit

application/models/Bank_model.php

@@ -0,0 +1,29 @@
+
+
+<?php if (!defined('BASEPATH')) {
+    exit('No direct script access allowed');
+}
+
+class Bank_model extends CI_Model
+{
+    public function __construct()
+    {
+        parent::__construct();
+    }
+
+    public function insert($data) {
+        $data_insert = array('bank_name' => $data['bank_name']);
+
+        $sql = $this->db->insert_string('banks', $data_insert)
+        . ' ON CONFLICT (bank_name) 
+            DO UPDATE SET bank_name=EXCLUDED.bank_name
+            RETURNING id';
+
+        return $this->db->query($sql)->result_array()[0]['id'];
+    }
+
+    public function delete($data) {
+        $this->db->where('id', $data['bank_id']);
+        $this->db->delete('banks');
+    }
+}