/**
* Function: save
*
* @param int $id - the id of the screen for which data should be saved
*
* This function saves configuration changes for screens. Most of it is
* straightforward. Since the blocks and agency-stop pairs are stored in
* different tables, the function pulls those data out and saves them in their
* respective tables.
*
*/
public function save($id = 0)
{
// MSC check that a new id does not clash with an already-created ID
// Load the screen model
$this->load->model('screen_model');
// Create a placeholder screen that will be filled with variables and then saved.
$updatevals = new Screen_model();
$updatevals->id = $id;
// Admins can't own screens
if (!$this->session->userdata('admin')) {
$updatevals->user_id = $this->session->userdata('id');
}
// Collect all the posted variables from the HTML form into one variable for
// easier access. Delete the submit "variable", which is really just the
// submit button.
$postvars = $this->input->post();
unset($postvars->submit);
// For each of the variables, check to see if the variable name ends with _op (opening)
// or _cl (closing). If so, these variables are the sleep and wake times for the screen.
// We only want to write them if they have values. Beware that Code Igniter
// may treat blank submission as an empty string, which cannot be written
// to a timestamp type in PostgreSQL.
foreach ($postvars as $key => $value) {
if (substr($key, strlen($key) - 3) == '_op' || substr($key, strlen($key) - 3) == '_cl') {
if (strlen($value) > 0) {
$updatevals->{$key} = $value;
}
} else {
$updatevals->{$key} = $value;
}
}
// Call a function that now writes these values to the database.
$updatevals->save_screen_values($id);
// Redirect the user back to the edit screen to see the changes he just
// made. If he created a new screen or changed the screen id, he may
// be directed back to the screen listing page.
if ($updatevals->id == $id) {
redirect("screen_admin/edit/{$id}");
} else {
redirect('screen_admin');
}
}
