I'm learning codeigniter and did a todo application. I made a list of items and when checked they should update in the database from 0 to 1. This is my controller.
public function item_done($id){
$this->db->from('list_items');
$st="item_id='".$id."'";
$this->db->where($st, NULL, FALSE);
$q = $this->db->get();
if ($q->num_rows() == 0){
redirect('main/restricted');
} else {
$this->db->update('list_items', array('item_done' => '1'));
redirect('lists/view_list/');
}
}
This is my database
I found my error, I forgot to add where this is how it should be $this->db->where($st, NULL, FALSE)->update('list_items', array('item_done' => '1'));
u also try this
$this->db->where('item_id',$st);
$this->db->update('list_items', array('item_done' => '1'));
Related
Rollback not working in laravel multiple database in 5.2. What can i do? please help me. Advance thanks.
public function TestingRegistration(){
$now=date('Y-m-d H:i:s');
$faculty_user_account=array(
'user_id' =>'466297',
'name' => 'Hello',
);
\DB::beginTransaction();
try{
$save_registration=\DB::table('users')->insert($faculty_user_account);
$view2= \DB::connection('mysql_2')->table('users')->insert($faculty_user_account);
$view3 = \DB::connection('mysql_3')->table('users')->insert($faculty_user_account);
\DB::commit();
return \Redirect::back()->with('message',"Faculty Registration Successfull!");
}catch(\Exception $e){
\DB::rollback();
$message = "Message : ".$e->getMessage().", File : ".$e->getFile().", Line : ".$e->getLine();
return \Redirect::back()->with('errormessage',$message);
}
}
The easy way to do transaction is to use it as a callback, this way it will be handle it automatically for you.
public function TestingRegistration(){
$now = \Carbon::now(); // Where is this use?
$faculty_user_account = [
'user_id' => '466297',
'name' => 'Hello',
];
$success = \DB::transaction(function () use ($faculty_user_account) {
$save_registration = \DB::table('users')->insert($faculty_user_account);
$view2 = \DB::connection('mysql_2')->table('users')->insert($faculty_user_account);
$view3 = \DB::connection('mysql_3')->table('users')->insert($faculty_user_account);
return (bool) $view2 && $view3;
});
if (! $success) {
return \Redirect::back()->with('errormessage', 'Unable to save.');
}
return \Redirect::back()->with('message',"Faculty Registration Successfull!");
}
PS: I can't remember what insert returns, let me check later to make sure it can be use like that for testing success.
I have a problem with codeigniter,
I want to do a join in the addition of a carrier,
when I add I assign a truck this driver
I want the state of truck changes from 0 to 1,
but I do not know,
public function add($email, $password , $nom , $prenom , $telephone,$id_camion)
{
$query = $this->db->get_where('transporteur', array('email' => $email));
if ($query->num_rows == 1) {
return FALSE;
}
$this->db->insert('transporteur', array('email' => $email,'password' => md5($password),'nom' => $nom ,'prenom'=>$prenom ,'telephone' => $telephone,'id_camion' => $id_camion));
return TRUE;
}
If I understand your question correctly, now that you've inserted a new carrier you want to set some state in a table of trucks. You already have the truck ID as a parameter so in theory all you need to do is:
//update only on a given camion_id
$this->db->where('id', $camion_id);
$this->db->update('camions', array('state' => 1));
Here I assume your table is called camions, its ID is id and the state column you're trying to change from 0 to 1 is called state.
If that's not quite right, please update your question. If you have trouble translating it into english, I can help with that, too. ;)
I'm confused about your question but you have (num_rows should be num_rows()) following code:
if ($query->num_rows == 1) {
return FALSE;
}
It should be:
if ($query->num_rows() == 1) {
return FALSE;
}
It's a method not a property. You may also use it like this way:
if ($query->num_rows()) {
return FALSE;
}
I've searched the ends of the earth and back for this solution, and for everyone else, the fix was to autoload the database class in autoload.php. However, I am already doing this, so I don't know where else to go with it.
Controller:
class Login extends CI_Controller{
function validate_credentials(){
$this->load->model('membership_model');
// call the member function from membership_model.php
$q = $this->membership_model->validate();
if($q){
// user info is valid
$data = array(
'username' => $this->input->post('username'),
'is_logged_in' => true
);
$this->session->set_userdata($data);
redirect('site/members_area');
}else{
$this->index();
}
}
}
Model:
class Membership_model extends CI_Model{
function validate(){
// this method is called from the login.php controller
$this->db->where('username', $this->input->post('username'));
$this->db->where('password', md5($this->input->post('password')));
$q = $this->db->get('members');
if($q->num_rows == 1){
return true;
}
return false;
}
}
Any help on this please, I'm going round in circles with this
My next thought is that php.ini needs configuring on my host server, to load the mysql modules - but I would very surprised by this?
Just to clarify - the line:
if($q->num_rows)
Is the problem, saying that I am trying to reference a property of a non object
Actually
if($q->num_rows)
should be
if($q->num_rows()) // It returns the number of rows returned by the query.
So you can use
if($q->num_rows()) // In this case it'll be evaluated true if rows grater than 0
{
// code when rows returned
}
num_rows is a function.
if ($query->num_rows() > 0) {
}
So you need
if($q->num_rows() > 0) {
return true;
}
Solved - I hadn't assigned a User to the database, therefore couldn't access it.
Relief
I'm using codeigniter version 2.0.3. I'm trying get the number of affected rows after an update query using
$this->db->affected_rows
It always returns 1 even if no row had been updated. I tried with
mysql_affected_rows()
and it returns -1 for a query failure and 0 if no record had been updated .
Edit included my code
I'm just using
$country_id = $this->input->post('country_id');
$time=$this->input->post('time');
$insert_array = array(
'country' => $this->input->post('name')
);
$this->db->update('country_master', $insert_array, array("country_id" => $country_id,"last_updated"=>$time));
$afftectedRows=$this->db->affected_rows();
Actually my code was like this
if (!$country_id) {
$this->db->insert('country_master', $insert_array);
$id = $this->db->insert_id();
} else {
$this->db->update('country_master', $insert_array, array("country_id" => $country_id, "last_updated" => $time));
}
$afftectedRows = $this->db->affected_rows();
And i modified it to
if (!$country_id) {
$this->db->insert('country_master', $insert_array);
$id = $this->db->insert_id();
} else {
$this->db->update('country_master', $insert_array, array("country_id" => $country_id, "last_updated" => $time));
$afftectedRows = $this->db->affected_rows();
}
And its working fine now.
And thank you very much for the replies..
I'm trying to build my first app on CodeIgniter. This is also my first time trying to stick to OOP and MVC as much as possible. It's been going ok so far but now that I'm trying to write my first model I'm having some troubles. Here's the error I'm getting:
A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Castledine' at line 3
SELECT * FROM (authors) WHERE author = Earle Castledine
Which, as you'll see below, relates to the following line in my model:
$this->db->get_where('authors', array('author' => $author));
I'm not quite sure why it's throwing the error. Is it because Earle Castledine isn't in quotes? If so, why doesn't CI put them in there? I would doubt that's the issue, rather to think it's my fault, but I'm not sure.
I'm having another issue as well. Neither tags nor authors are getting inserted into their respective tables. Their insert statement is wrapped in a conditional that's supposed to be making sure they don't already exist, but it seems to be failing and the insert never happens. I assume it's failing because the tags aren't getting put in the database and it's down in the author section before it tosses the error. I know how to do this with pure PHP but I'm trying to go about doing it the pure CI ActiveRecord way.
Here's the statement I'm using:
if ($this->db->count_all_results() == 0)
And I'm using that instead of what I'd normally use:
if (mysql_num_rows() == 0)
Am I doing it wrong?
Here are my model and controller (only the functions that matter), commented as best I could.
Model:
function new_book($book, $tags, $authors, $read) {
// Write book details to books table
$this->db->insert('books', $book);
// Write tags to tag table and set junction
foreach ($tags as $tag) {
// Check to see if the tag is already in the 'tags' table
$this->db->get_where('tags', array('tag' => $tag));
// trying to use this like mysql_num_rows()
if ($this->db->count_all_results() == 0) {
// Put it there
$this->db->insert('tags', $tag);
}
// Set the junction
// I only need the id, so...
$this->db->select('id');
// SELECT id FROM tags WHERE tag = $tag
$query = $this->db->get_where('tags', array('tag' => $tag));
// INSERT INTO books_tags (book_id, tag_id) VALUES ($book['isbn'], $query->id)
$this->db->insert('books_tags', array('book_id' => $book['isbn'], 'tag_id' => $query->id));
}
// Write authors to author table and set junction
// Same internal comments apply from tags above
foreach ($authors as $author) {
$this->db->get_where('authors', array('author' => $author));
if ($this->db->count_all_results() == 0) {
$this->db->insert('authors', $author);
}
$this->db->select('id');
$query = $this->db->get_where('authors', array('author' => $author));
$this->db->insert('authors_books', array('book_id' => $book['isbn'], 'author_id' => $query));
}
// If the user checked that they've read the book
if (!empty($read)) {
// Get their user id
$user = $this->ion_auth->get_user();
// INSERT INTO books_users (book_id, tag_id) VALUES ($book['isbn'], $user->id)
$this->db->insert('books_users', array('book_id' => $book['isbn'], 'user_id' => $user->id));
}
}
Controller:
function confirm() {
// Make sure they got here by form result, send 'em packing if not
$submit = $this->input->post('details');
if (empty($submit)) {
redirect('add');
}
// Set up form validation
$this->load->library('form_validation');
$this->form_validation->set_error_delimiters('<h3 class="error">', ' Also, you’ll need to choose your file again.</h3>');
$this->form_validation->set_rules('isbn','ISBN-10','trim|required|exact_length[10]|alpha_numeric|unique[books.isbn]');
$this->form_validation->set_rules('title','title','required');
$this->form_validation->set_rules('tags','tags','required');
// Set up upload
$config['upload_path'] = './books/';
$config['allowed_types'] = 'pdf|chm';
$this->load->library('upload', $config);
// If they failed validation or couldn't upload the file
if ($this->form_validation->run() == FALSE || $this->upload->do_upload('file') == FALSE) {
// Get the book from Amazon
$bookSearch = new Amazon();
try {
$amazon = $bookSearch->getItemByAsin($this->input->post('isbn'));
} catch (Exception $e) {
echo $e->getMessage();
}
// Send them back to the form
$data['image'] = $amazon->Items->Item->LargeImage->URL;
$data['content'] = 'add/details';
$data['error'] = $this->upload->display_errors('<h3 class="error">','</h3>');
$this->load->view('global/template', $data);
// If they did everything right
} else {
// Get the book from Amazon
$bookSearch = new Amazon();
try {
$amazon = $bookSearch->getItemByAsin($this->input->post('isbn'));
} catch (Exception $e) {
echo $e->getMessage();
}
// Grab the file info
$file = $this->upload->data();
// Prep the data for the books table
$book = array(
'isbn' => $this->input->post('isbn'),
'title' => mysql_real_escape_string($this->input->post('title')),
'date' => $amazon->Items->Item->ItemAttributes->PublicationDate,
'publisher' => mysql_real_escape_string($amazon->Items->Item->ItemAttributes->Publisher),
'pages' => $amazon->Items->Item->ItemAttributes->NumberOfPages,
'review' => mysql_real_escape_string($amazon->Items->Item->EditorialReviews->EditorialReview->Content),
'image' => mysql_real_escape_string($amazon->Items->Item->LargeImage->URL),
'thumb' => mysql_real_escape_string($amazon->Items->Item->SmallImage->URL),
'filename' => $file['file_name']
);
// Get the tags, explode by comma or space
$tags = preg_split("/[\s,]+/", $this->input->post('tags'));
// Get the authors
$authors = array();
foreach ($amazon->Items->Item->ItemAttributes->Author as $author) {
array_push($authors, $author);
}
// Find out whether they've read it
$read = $this->input->post('read');
// Send it up to the database
$this->load->model('add_model', 'add');
$this->add->new_book($book, $tags, $authors, $read);
// For now... Later I'll load a view
echo 'Success';
}
}
Could anyone help shed light on what I'm doing wrong? Thanks much.
Marcus
Where you are using count_all_results(), I think you mean to use num_rows(). count_all_results() will actually create a SELECT COUNT(*) query.
For debugging your problems...
If you want to test if an insert() worked, use affected_rows(), example:
var_dump($this->db->affected_rows());
At any point you can output what the last query with last_query(), example:
var_dump($this->db->last_query());
You can also turn on the Profiler so you can see all the queries being run, by adding in the controller:
$this->output->enable_profiler(TRUE);
I managed to figure this out on my own. The controller didn't really change, but here's the new model:
function new_book($book, $tags, $authors, $read) {
// Write book details to books table
$this->db->insert('books', $book);
// Write tags to tag table and set junction
foreach ($tags as $tag) {
// Check to see if the tag is already in the 'tags' table
$query = $this->db->get_where('tags', array('tag' => $tag));
// trying to use this like mysql_num_rows()
if ($query->num_rows() == 0) {
// Put it there
$this->db->insert('tags', array('tag' => $tag));
}
// Set the junction
// I only need the id, so...
$this->db->select('id');
// SELECT id FROM tags WHERE tag = $tag
$query = $this->db->get_where('tags', array('tag' => $tag));
$result = $query->row();
// INSERT INTO books_tags (book_id, tag_id) VALUES ($book['isbn'], $query->id)
$this->db->insert('books_tags', array('book_id' => $book['isbn'], 'tag_id' => $result->id));
}
// Write authors to author table and set junction
// Same internal comments apply from tags above
foreach ($authors as $author) {
$query = $this->db->get_where('authors', array('author' => mysql_real_escape_string($author)));
if ($query->num_rows() == 0) {
$this->db->insert('authors', array('author' => mysql_real_escape_string($author)));
}
$this->db->select('id');
$query = $this->db->get_where('authors', array('author' => mysql_real_escape_string($author)));
$result = $query->row();
$this->db->insert('authors_books', array('book_id' => $book['isbn'], 'author_id' => $result->id));
}
// If the user checked that they've read the book
if (!empty($read)) {
// Get their user id
$user = $this->ion_auth->get_user();
// INSERT INTO books_users (book_id, tag_id) VALUES ($book['isbn'], $user->id)
$this->db->insert('books_users', array('book_id' => $book['isbn'], 'user_id' => $user->id));
}
}