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hasManyThrough()
for the relation Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('email')->unique();
$table->string('password');
$table->integer('country_id')->unsigned();
$table->rememberToken();
$table->timestamps();
$table->foreign('country_id')->references('id')->on('countries')
->onDelete('cascade');
});
Schema::create('posts', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->integer('user_id')->unsigned();
$table->timestamps();
$table->foreign('user_id')->references('id')->on('users')
->onDelete('cascade');
});
Schema::create('countries', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->timestamps();
});
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Country extends Model
{
public function posts(){
return $this->hasManyThrough(
Post::class,
User::class,
'country_id',
'user_id',
'id',
'id'
);
}
}
$country = Country::find(1);
dd($country->posts);
morphMany()
and morphTo()
for relation.Schema::create('posts', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->timestamps();
});
Videos TableSchema::create('videos', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->timestamps();
});
Comments TableSchema::create('comments', function (Blueprint $table) {
$table->increments('id');
$table->string("body");
$table->integer('commentable_id');
$table->string("commentable_type");
$table->timestamps();
});
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Post extends Model
{
public function comments(){
return $this->morphMany(Comment::class, 'commentable');
}
}
Video Model<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Video extends Model{
public function comments(){
return $this->morphMany(Comment::class, 'commentable');
}
}
Comment Model<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Comment extends Model{
public function commentable(){
return $this->morphTo();
}
}
$post = Post::find(1);
$comment = new Comment;
$comment->body = "Hi Harikrishnan";
$post->comments()->save($comment);
$video = Video::find(1);
$comment = new Comment;
$comment->body = "Hi Harikrishnan";
$video->comments()->save($comment);
$post = Post::find(1);
dd($post->comments);
$video = Video::find(1);
dd($video->comments);
morphToMany()
and morphedByMany()
will be used for many to many polymorphic relationshipsSchema::create('posts', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->timestamps();
});
Videos TableSchema::create('videos', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->timestamps();
});
Tags tableSchema::create('tags', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->timestamps();
});
Taggables tableSchema::create('taggables', function (Blueprint $table) {
$table->integer("tag_id");
$table->integer("taggable_id");
$table->string("taggable_type");
});
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Post extends Model
{
public function tags(){
return $this->morphToMany(Tag::class, 'taggable');
}
}
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Video extends Model
{
public function tags(){
return $this->morphToMany(Tag::class, 'taggable');
}
}
Tag Model<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Tag extends Model
{
public function posts(){
return $this->morphedByMany(Post::class, 'taggable');
}
public function videos(){
return $this->morphedByMany(Video::class, 'taggable');
}
}
Creating Records$post = Post::find(1);
$tag = new Tag;
$tag->name = "Hi Harikrishnan";
$post->tags()->save($tag);
$video = Video::find(1);
$tag = new Tag;
$tag->name = "Vishnu";
$video->tags()->save($tag);
$post = Post::find(1);
$tag1 = new Tag;
$tag1->name = "Kerala Blasters";
$tag2 = new Tag;
$tag2->name = "Manajapadda";
$post->tags()->saveMany([$tag1, $tag2]);
$video = Video::find(1);
$tag1 = new Tag;
$tag1->name = "Kerala Blasters";
$tag2 = new Tag;
$tag2->name = "Manajappada";
$video->tags()->saveMany([$tag1, $tag2]);
$post = Post::find(1);
$tag1 = Tag::find(3);
$tag2 = Tag::find(4);
$post->tags()->attach([$tag1->id, $tag2->id]);
$video = Video::find(1);
$tag1 = Tag::find(3);
$tag2 = Tag::find(4);
$video->tags()->attach([$tag1->id, $tag2->id]);
$post = Post::find(1);
$tag1 = Tag::find(3);
$tag2 = Tag::find(4);
$post->tags()->sync([$tag1->id, $tag2->id]);
$video = Video::find(1);
$tag1 = Tag::find(3);
$tag2 = Tag::find(4);
$video->tags()->sync([$tag1->id, $tag2->id]);
$post = Post::find(1);
dd($post->tags);
$video = Video::find(1);
dd($video->tags)
$tag = Tag::find(1);
dd($tag->posts);
$tag = Tag::find(1);
dd($tag->videos);
<html>
<head>
<title>My Awesome CMS – Page Title</title>
</head>
<body>
</body>
</html>
</head>
tag. <link href=”../assets/css/style.css” type=”text/css” rel=”stylesheet”/>
<?php
tag. <div id="myfirstid"></div>
<div class="myfirstclass"></div>
<div class="myfirstclass"></div>
<div class="myfirstclass"></div>
<div class="myfirstclass"></div>
<div class="myfirstclass"></div>
#myfirstid{
Background:lightblue;
Font-family:Arial;
Font-size:44px;
Font-weight: Bold;
}
.myfirstclass{
Font-size:15px;
Color: darkblue;
}
include(‘includes/header.php’);
<divs>
we used for practice earlier, we have something better in store! include(‘includes/footer.php’);
foreach($getmydata as $mydata){ echo "Title: "; echo $mydata['title']; echo "<br/>"; echo "Content: "; echo $mydata['content']; echo "<br/>"; echo "Author: "; echo $mydata['author']; echo "<br/>"; echo "<br/>";
?>
<div id=”myfirstid”>
<?php
foreach($getmydata as $mydata){
echo "<div class=”myfirstclass”>Title: ";
echo $mydata['title'];
echo "<br/>";
echo "Content: ";
echo $mydata['content'];
echo "<br/>";
echo "Author: ";
echo $mydata['author'];
echo "</div><br/><br/>";
}?>
</div>
<?php
<?php
include('includes/header.php');
include('includes/conn.php');
if ($letsconnect -> connect_errno) { echo "Error " . $letsconnect -> connect_error;
}else{
$getmydata=$letsconnect -> query("SELECT * FROM content");
?>
<div id="myfirstid">
<?php
foreach($getmydata as $mydata){
echo "<div class=”myfirstclass”>Title: ";
echo $mydata['title'];
echo "<br/>";
echo "Content: ";
echo $mydata['content'];
echo "<br/>";
echo "Author: ";
echo $mydata['author'];
echo "</div><br/><br/>";
}
?>
</div>
<?php
}
$letsconnect -> close();
include('includes/footer.php');
?>
CREATE TABLE <code>mydbname</code>.<code>content</code> ( <code>ID</code> INT(11) NOT NULL AUTO_INCREMENT , <code>title</code> VARCHAR(100) NOT NULL , <code>content</code> LONGTEXT NOT NULL , <code>author</code> VARCHAR(50) NOT NULL , PRIMARY KEY (<code>ID</code>)) ENGINE = MyISAM COMMENT = 'content table';
conn.php
file in your root/includes folder.conn.php
file, remember to include your own database credentials.
<?php
$letsconnect = new mysqli("localhost","dbuser","dbpass","dbname");
?>
index.php
at the root of your CMS folder.
<?php
include('includes/conn.php');
if ($letsconnect -> connect_errno) { echo "Error " . $letsconnect -> connect_error;
}else{
$getmydata=$letsconnect -> query("SELECT * FROM content");
foreach($getmydata as $mydata){ echo "Title: "; echo $mydata['title']; echo "<br/>"; echo "Content: "; echo $mydata['content']; echo "<br/>"; echo "Author: "; echo $mydata['author']; echo "<br/>"; echo "<br/>";
}
}
$letsconnect -> close();
?>
index.php
in your backend folder.
<html>
<head><title>Backend - Capture Content</title></head>
<body>
<form action="<?php $_SERVER[‘PHP_SELF’];?>" method="post">
<input type="text" name="title" placeholder="Content Title here" required/>
<textarea name="content">Content Here</textarea>
<input type="text" name="author" placeholder="Author" required/>
<input type="submit" value="Save My Data" name="savedata"/>
</form>
</body>
</html>
<form>
tag.
<?php
if(isset($_POST['savedata'])){
include('../includes/conn.php');
if ($letsconnect->connect_error) {
die("Your Connection failed: " . $letsconnect->connect_error);
}else{
$sql = "INSERT INTO content(title,content,author)VALUES ('".$_POST["title"]."', '".$_POST["content"]."', '".$_POST["author"]."')";
if (mysqli_query($letsconnect, $sql)) {
echo "Your data was saved successfully!";
} else { echo "Error: " . $sql . "" . mysqli_error($letsconnect);
} $letsconnect->close();
}
}
?>
Note, this is a basic MySQL query to insert data. However, before using this in production it's important to add proper escaping and security to prevent SQL injections. This will be covered in the next article.
;extension=sockets
extension=sockets
server.php
file$host = 'localhost';
$port = '9000';
$null = NULL;
function send_message($msg)
{
global $clients;
foreach($clients as $changed_socket)
{
@socket_write($changed_socket,$msg,strlen($msg));
}
return true;
}
function unmask($text) {
$length = ord($text[1]) & 127;
if($length == 126) {
$masks = substr($text, 4, 4);
$data = substr($text, 8);
}
elseif($length == 127) {
$masks = substr($text, 10, 4);
$data = substr($text, 14);
}
else {
$masks = substr($text, 2, 4);
$data = substr($text, 6);
}
$text = "";
for ($i = 0; $i < strlen($data); ++$i) {
$text .= $data[$i] ^ $masks[$i%4];
}
return $text;
}
function mask($text)
{
$b1 = 0x80 | (0x1 & 0x0f);
$length = strlen($text);
if($length <= 125)
$header = pack('CC', $b1, $length);
elseif($length > 125 && $length < 65536)
$header = pack('CCn', $b1, 126, $length);
elseif($length >= 65536)
$header = pack('CCNN', $b1, 127, $length);
return $header.$text;
}
function perform_handshaking($receved_header,$client_conn, $host, $port)
{
$headers = array();
$lines = preg_split("/
/", $receved_header);
foreach($lines as $line)
{
$line = chop($line);
if(preg_match('/\A(\S+): (.*)\z/', $line, $matches))
{
$headers[$matches[1]] = $matches[2];
}
}
$secKey = $headers['Sec-WebSocket-Key'];
$secAccept = base64_encode(pack('H*', sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
$upgrade = "HTTP/1.1 101 Web Socket Protocol Handshake
" .
"Upgrade: websocket
" .
"Connection: Upgrade
" .
"WebSocket-Origin: $host
" .
"WebSocket-Location: ws://$host:$port/php-ws/chat-daemon.php
".
"Sec-WebSocket-Accept:$secAccept
";
socket_write($client_conn,$upgrade,strlen($upgrade));
}
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($socket, 0, $port);
socket_listen($socket);
$clients = array($socket);
while (true) {
$changed = $clients;
socket_select($changed, $null, $null, 0, 10);
if (in_array($socket, $changed)) {
$socket_new = socket_accept($socket); $clients[] = $socket_new;
$header = socket_read($socket_new, 1024); perform_handshaking($header, $socket_new, $host, $port);
socket_getpeername($socket_new, $ip); $response = mask(json_encode(array('type'=>'system', 'message'=>$ip.' connected'))); send_message($response);
$found_socket = array_search($socket, $changed);
unset($changed[$found_socket]);
}
foreach ($changed as $changed_socket) {
while(socket_recv($changed_socket, $buf, 1024, 0) >= 1)
{
$received_text = unmask($buf); $tst_msg = json_decode($received_text, true); $user_name = $tst_msg['name']; $user_message = $tst_msg['message']; $user_color = $tst_msg['color'];
$response_text = mask(json_encode(array('type'=>'usermsg', 'name'=>$user_name, 'message'=>$user_message, 'color'=>$user_color)));
send_message($response_text); break 2; }
$buf = @socket_read($changed_socket, 1024, PHP_NORMAL_READ);
if ($buf === false) { $found_socket = array_search($changed_socket, $clients);
socket_getpeername($changed_socket, $ip);
unset($clients[$found_socket]);
$response = mask(json_encode(array('type'=>'system', 'message'=>$ip.' disconnected')));
send_message($response);
}
}
}
socket_close($socket);
$host = 'localhost';
$port = '9000';
$subfolder = "php_ws/";
$colors = array('#007AFF','#FF7000','#FF7000','#15E25F','#CFC700','#CFC700','#CF1100','#CF00BE','#F00');
$color_pick = array_rand($colors);
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<div class="chat-wrapper">
<div id="message-box"></div>
<div class="user-panel">
<input type="text" name="name" id="name" placeholder="Your Name" maxlength="15" />
<input type="text" name="message" id="message" placeholder="Type your message here..." maxlength="100" />
<button id="send-message">Send</button>
</div>
</div>
</body>
</html>
<style type="text/css">
.chat-wrapper {
font: bold 11px/normal 'lucida grande', tahoma, verdana, arial, sans-serif;
background: #00a6bb;
padding: 20px;
margin: 20px auto;
box-shadow: 2px 2px 2px 0px #00000017;
max-width:700px;
min-width:500px;
}
#message-box {
width: 97%;
display: inline-block;
height: 300px;
background: #fff;
box-shadow: inset 0px 0px 2px #00000017;
overflow: auto;
padding: 10px;
}
.user-panel{
margin-top: 10px;
}
input[type=text]{
border: none;
padding: 5px 5px;
box-shadow: 2px 2px 2px #0000001c;
}
input[type=text]#name{
width:20%;
}
input[type=text]#message{
width:60%;
}
button#send-message {
border: none;
padding: 5px 15px;
background: #11e0fb;
box-shadow: 2px 2px 2px #0000001c;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script language="javascript" type="text/javascript">
var msgBox = $('#message-box');
var wsUri = "ws://".$host.":".$port."/php-ws/server.php";
websocket = new WebSocket(wsUri);
websocket.onopen = function(ev) { msgBox.append('<div class="system_msg" style="color:#bbbbbb">Welcome to my "Chat box"!</div>'); }
websocket.onmessage = function(ev) {
var response = JSON.parse(ev.data);
var res_type = response.type; var user_message = response.message; var user_name = response.name; var user_color = response.color; switch(res_type){
case 'usermsg':
msgBox.append('<div><span class="user_name" style="color:' + user_color + '">' + user_name + '</span> : <span class="user_message">' + user_message + '</span></div>');
break;
case 'system':
msgBox.append('<div style="color:#bbbbbb">' + user_message + '</div>');
break;
}
msgBox[0].scrollTop = msgBox[0].scrollHeight; };
websocket.onerror = function(ev){ msgBox.append('<div class="system_error">Error Occurred - ' + ev.data + '</div>'); };
websocket.onclose = function(ev){ msgBox.append('<div class="system_msg">Connection Closed</div>'); };
$('#send-message').click(function(){
send_message();
});
$( "#message" ).on( "keydown", function( event ) {
if(event.which==13){
send_message();
}
});
function send_message(){
var message_input = $('#message'); var name_input = $('#name');
if(message_input.val() == ""){ alert("Enter your Name please!");
return;
}
if(message_input.val() == ""){ alert("Enter Some message Please!");
return;
}
var msg = {
message: message_input.val(),
name: name_input.val(),
color : '<?php echo $colors[$color_pick]; ?>'
};
websocket.send(JSON.stringify(msg));
message_input.val(''); }
</script>
php -q c:\xampp\htdocs\php-ws\server.php
composer require firebase/php-jwt
require_once('vendor/autoload.php');
use \Firebase\JWT\JWT;
private {
$payload = array(
'iss' => $_SERVER['HOST_NAME'],
'exp' => time()+600, 'uId' => $UiD
);
try{
$jwt = JWT::encode($payload, $this->Secret_Key,'HS256'); $res=array("status"=>true,"Token"=>$jwt);
}catch (UnexpectedValueException $e) {
$res=array("status"=>false,"Error"=>$e->getMessage());
}
return $res;
}
$return['status']=1;
$return['_data_']=$UserData[0];
$return['message']='User Logged in Successfully.';
$jwt=$obj->generateToken($UserData[0]['id']);
if($jwt['status']==true)
{
$return['JWT']=$jwt['Token'];
}
else{
unset($return['_data_']);
$return['status']=0;
$return['message']='Error:'.$jwt['Error'];
}
UserBlogs
is a After login Api, So for verify that we are creating Authencate method in class like following: public function Authenticate($JWT,$Curret_User_id)
{
try {
$decoded = JWT::decode($JWT,$this->Secret_Key, array('HS256'));
$payload = json_decode(json_encode($decoded),true);
if($payload['uId'] == $Curret_User_id) {
$res=array("status"=>true);
}else{
$res=array("status"=>false,"Error"=>"Invalid Token or Token Exipred, So Please login Again!");
}
}catch (UnexpectedValueException $e) {
$res=array("status"=>false,"Error"=>$e->getMessage());
}
return $res;
}
UserBlogs
Action of api , replace the UserBlogs
Action inner content with following code: if(isset($_POST['Uid']))
{
$resp=$obj->Authenticate($_POST['JWT'],$_POST['Uid']);
if($resp['status']==false)
{
$return['status']=0;
$return['message']='Error:'.$resp['Error'];
}
else{
$blogs=$obj->get_all_blogs($_POST['Uid']);
if(count($blogs)>0)
{
$return['status']=1;
$return['_data_']=$blogs;
$return['message']='Success.';
}
else
{
$return['status']=0;
$return['message']='Error:Invalid UserId!';
}
}
}
else
{
$return['status']=0;
$return['message']='Error:User Id not provided!';
}
<?php
header("Content-Type: application/json; charset=UTF-8");
require_once('vendor/autoload.php');
use \Firebase\JWT\JWT;
class DBClass {
private $host = "localhost";
private $username = "root";
private $password = ""; private $database = "news";
public $connection;
private $Secret_Key="*$%43MVKJTKMN$#";
public function connect(){
$this->connection = null;
try{
$this->connection = new PDO("mysql:host=" . $this->host . ";dbname=" . $this->database, $this->username, $this->password);
$this->connection->exec("set names utf8");
}catch(PDOException $exception){
echo "Error: " . $exception->getMessage();
}
return $this->connection;
}
public function login($email,$password){
if($this->connection==null)
{
$this->connect();
}
$query = "SELECT id,name,email,createdAt,updatedAt from users where email= ? and password= ?";
$stmt = $this->connection->prepare($query);
$stmt->execute(array($email,md5($password)));
$ret= $stmt->fetchAll(PDO::FETCH_ASSOC);
return $ret;
}
public function get_all_blogs($Uid){
if($this->connection==null)
{
$this->connect();
}
$query = "SELECT b.*,u.id as Uid,u.email as Uemail,u.name as Uname from blogs b join users u on u.id=b.user_id where b.user_id= ?";
$stmt = $this->connection->prepare($query);
$stmt->execute(array($Uid));
$ret= $stmt->fetchAll(PDO::FETCH_ASSOC);
return $ret;
}
public function response($array)
{
echo json_encode($array);
exit;
}
public function generateToken($UiD)
{
$payload = array(
'iss' => $_SERVER['HOST_NAME'],
'exp' => time()+600, 'uId' => $UiD
);
try{
$jwt = JWT::encode($payload, $this->Secret_Key,'HS256'); $res=array("status"=>true,"Token"=>$jwt);
}catch (UnexpectedValueException $e) {
$res=array("status"=>false,"Error"=>$e->getMessage());
}
return $res;
}
public function Authenticate($JWT,$Current_User_id)
{
try {
$decoded = JWT::decode($JWT,$this->Secret_Key, array('HS256'));
$payload = json_decode(json_encode($decoded),true);
if($payload['uId'] == $Current_User_id) {
$res=array("status"=>true);
}else{
$res=array("status"=>false,"Error"=>"Invalid Token or Token Exipred, So Please login Again!");
}
}catch (UnexpectedValueException $e) {
$res=array("status"=>false,"Error"=>$e->getMessage());
}
return $res;
}
}
$return=array();
$obj = new DBClass();
if(isset($_GET['action']) && $_GET['action']!='')
{
if($_GET['action']=="login")
{
if(isset($_POST['email']) && isset($_POST['password']))
{
$UserData=$obj->login($_POST['email'],$_POST['password']);
if(count($UserData)>0)
{
$return['status']=1;
$return['_data_']=$UserData[0];
$return['message']='User Logged in Successfully.';
$jwt=$obj->generateToken($UserData[0]['id']);
if($jwt['status']==true)
{
$return['JWT']=$jwt['Token'];
}
else{
unset($return['_data_']);
$return['status']=0;
$return['message']='Error:'.$jwt['Error'];
}
}
else
{
$return['status']=0;
$return['message']='Error:Invalid Email or Password!';
}
}
else
{
$return['status']=0;
$return['message']='Error:Email or Password not provided!';
}
}
elseif($_GET['action']=="UserBlogs")
{
if(isset($_POST['Uid']))
{
$resp=$obj->Authenticate($_POST['JWT'],$_POST['Uid']);
if($resp['status']==false)
{
$return['status']=0;
$return['message']='Error:'.$resp['Error'];
}
else{
$blogs=$obj->get_all_blogs($_POST['Uid']);
if(count($blogs)>0)
{
$return['status']=1;
$return['_data_']=$blogs;
$return['message']='Success.';
}
else
{
$return['status']=0;
$return['message']='Error:Invalid UserId!';
}
}
}
else
{
$return['status']=0;
$return['message']='Error:User Id not provided!';
}
}
}
else
{
$return['status']=0;
$return['message']='Error:Action not provided!';
}
$obj->response($return);
$obj->connection=null;
?>