php mvc fetch data in Database display dropdown - php

Question

How should I add my model into my controller to display the values in drop down ?
The error I get: Invalid argument supplied for foreach()
I didn't use any framework. Just native php. I am new in MVC and PHP please help!
My Controller:
<?php
class Index extends Controller {
function __construct(){
parent::__construct();
}
function index(){
$landArray = $this->model->fetchData();
$this->view->render('index/index');
var_dump($landArray); // display all row in database
}
}
Model:
<?php
class Index_Model extends Model {
function __construct(){
parent::__construct();
}
function fetchData(){
$selectIsland = $this->connection->prepare("SELECT island_id, island
from island" );
$selectIsland->setFetchMode(PDO::FETCH_ASSOC);
$selectIsland->execute();
$islandResult = $selectIsland->fetchAll();
return $islandResult;
}
}
View:
<select>
<option value="">--- Select Island---</option>
<?php
foreach($islandResult as $row){
echo '<option value="'.$row['island_id'].'">'.$row['island'].'</option>';
endforeach
}?>
</select>
This is my library View and render method.
<?php
class View {
function __construct(){
}
public function render($name, $noInclude = false, $landArray){
if($noInclude == true){
require 'views/'.$name.'.php';
}else{
require 'views/header.php';
require 'views/'.$name.'.php';
require 'views/foother.php';
}
}
}
}

Answer 1

You never called fetchData() method of your model. In MVC controller controls everything. in your controller you have to call methods from model. then pass those to your view file.
<?php
class Index extends Controller {
function __construct(){
parent::__construct();
}
function index(){
$landArray = $this->model->fetchData();
$this->view->render('index/index', false, array('islandResult' => $landArray)); // as we are sending param to view and render accept that as 3rd param so we need to specify the 2nd param too!
}
}
Model:
<?php
class Index_Model extends Model {
function __construct(){
parent::__construct();
}
function fetchData(){
$selectIsland = $this->connection->prepare("SELECT island_id, island
from island" );
$selectIsland->execute();
$islandResult = $selectIsland->fetchAll();
return $islandResult; //if you need something to pass to view from db first you have to pass it to controller from model
}
}
View:
<select>
<option value="">--- Select Island---</option>
<?php
foreach($islandResult as $row){
echo '<option value="'.$row['island_id'].'">'.$row['island'].'</option>';
}
?>
</select>
View/Render Library Method:
class View {
function __construct(){
}
public function render($name, $noInclude = false, $arrayParam = array()){ //look closely...here i've made 3rd parameter as default argument so that your other codes which don't need to send param to view works smoothly.
if(count($arrayParam) > 0){
extract($arrayParam);
}
if($noInclude == true){
require 'views/'.$name.'.php';
}else{
require 'views/header.php';
require 'views/'.$name.'.php';
require 'views/foother.php';
}
}
}
Now you'll be able to use parameters in view which you are sending from controller. whatever you pass as array key in controller can be used as variable in view now.
N.B: check my comments from code.