Multiple views in codeigniter
I am working on a codeigniter site, in which a page is built using multiple views, I have come to a point where I need to work with a variable that is being set in another view is it possible to access it from another view?
This is code I have
Controller:
public function index() {开发者_Go百科
// $this->output->enable_profiler(TRUE);
$data = array();
if($query = $this->category_model->get_all_online()) {
$data['main_menu'] = $query;
}
$this->load->model('image_model');
/*
* Sort out the users backgrounds, basically do a check to see if there is a 'special' background
* if there is not a 'special' background then IF the user is logged in and has a background of there
* own show that one, if not show a generic one, if they are not logged in show a bang one
*/
$image = array();
if ($query = $this->image_model->get_special_backgrounds()) {
$image['special'] = $query;
} elseif(!isset($image['special']) && !isset($this->session->userdata['user_id'])) {
if($query = $this->image_model->get_mysite_background()) {
$image['generic'] = $query;
}
}
if(isset($this->session->userdata['user_id'])) {
if($query = $this->image_model->get_user_backgrounds($this->session->userdata['user_id'])) {
$image['user_background'] = $query;
}
}
$data = array_merge($data, $image);
$this->load->view('home/main_page.php', array_merge($data, $image));
}
Model:
public function get_mysite_background() {
$this->db->select('*');
$this->db->from('background');
$this->db->where('users_user_group_group_id', 1);
$this->db->where('is_special', 0);
$query = $this->db->get();
return $query->result_array();
}
public function get_special_backgrounds() {
$this->db->select('*');
$this->db->from('background');
$this->db->where('is_special', 1);
$query = $this->db->get();
return $query->result_array();
}
public function get_user_backgrounds($user_id) {
$this->db->select('*');
$this->db->from('background');
$this->db->where('users_user_id', $user_id);
$this->db->where('is_special', 0);
$query = $this->db->get();
return $query->result_array();
}
The Views in Question: Firstly where the variable is getting set,
</div>
<div id="background-select">
<?php
$count = 0;
if(isset($special)) {
foreach ($special as $row) {
$count ++;
print '<div class="select">';
print "<a href='index.php/home/category/".$row['background_id']."'>$count</a>";
print '</div>';
if($count = 1) {
$background = $row['background_name'];
}
}
}
if(isset($generic)) {
foreach ($generic as $row) {
$count ++;
print '<div class="select">';
print "<a href='index.php/home/category/".$row['background_id']."'>$count</a>";
print '</div>';
if($count = 1) {
$background = $row['background_name'];
}
}
}
if(isset($user_background)) {
foreach ($user_background as $row) {
$count ++;
print '<div class="select">';
print "<a href='index.php/home/category/".$row['background_id']."'>$count</a>";
print '</div>';
if($count = 1) {
$background = $row['background_name'];
}
}
}
?>
And where I want to use the variable:
<body>
<div id="wrapper" style=<?php echo"background:url(/media/uploads/backgrounds/".$background.");";?>>
The variable I looking to use $background
You can use the following helper class to transfer the values from one view to another:
class VarStore {
private static $values = array();
public static function get($key, $default = NULL) {
return (isset(self::$values[$key])? self::$values[$key] : $default);
}
public static function set($key, $value) {
self::$values[$key] = $value;
}
}
Call VarStore::set('background', $background); in the first view and $background = VarStore::get('background'); in the second.
Most of the problems in programming are conceptual and of understanding... The point is a View is to VIEW the data and not calculate it. calculations are carried out in models whose functions can be called by multiple modules when required. So better is before a view is called work-out all the data it has to display and use the view for VIEWING only not callucations... I hope this change of paradigm will help
加载中,请稍侯......
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