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Technology is constantly changing the way we interact, research, and react. One such way artificial intelligence is impacting our daily lives, and we may not even realize it is in weather forecasting.
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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();
});
Schema::create('videos', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->timestamps();
});
Schema::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');
}
}
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Video extends Model{
public function comments(){
return $this->morphMany(Comment::class, 'commentable');
}
}
<?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();
});
Schema::create('videos', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->timestamps();
});
Schema::create('tags', function (Blueprint $table) {
$table->increments('id');
$table->string("name");
$table->timestamps();
});
Schema::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');
}
}
<?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');
}
}
$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);
CREATE TABLE 'mydbname'.'menus' ( 'ID' INT(11) NOT NULL AUTO_INCREMENT , 'menuname' VARCHAR(100) NOT NULL , 'item' VARCHAR(50) NOT NULL , 'itemlink' VARCHAR(100) NOT NULL , PRIMARY KEY ('ID')) ENGINE = MyISAM COMMENT = 'menu table';
CREATE TABLE 'mydbname'.'users' ( 'ID' INT(11) NOT NULL AUTO_INCREMENT , 'username' VARCHAR(100) NOT NULL , 'password' VARCHAR(50) NOT NULL , 'email' VARCHAR(100) NOT NULL , PRIMARY KEY ('ID')) ENGINE = MyISAM COMMENT = 'user table';
ALTER TABLE 'mydbname'.'content' ADD content_type VARCHAR(50);
<form method="post" action="<?php $_SERVER['PHP_SELF'];?>"/>
<input type="text" name="menuname" class="mytextbox" placeholder="Menu Name" required />
<input type="text" name="item" class="mytextbox" placeholder="Item" required />
<input type="text" name="itemlink" class="mytextbox" placeholder="Item Link" required />
<input type="submit" value="Save Menu Item" name="savemenu" class="mybutton"/>
</form>
<form> tag.<?php
if(isset($_POST['savemenu'])){
include('../includes/conn.php');
if ($letsconnect->connect_error) {
die("Your Connection failed: " . $letsconnect->connect_error);
}else{
$menuname = $letsconnect ->real_escape_string($_POST['menuname']);
$item = $letsconnect -> real_escape_string($_POST['item']);
$itemlink = $letsconnect->real_escape_string($_POST['itemlink']);
$sql = "INSERT INTO menus(menuname,item,itemlink) VALUES ('".$menuname."', '".$item."', '".$itemlink."')";
if (mysqli_query($letsconnect, $sql)) {
echo "Your data was saved successfully!";
} else { echo "Error: " . $sql . "" . mysqli_error($letsconnect);
} $letsconnect->close();
}
}
?>
<form method="post" action="<?php $_SERVER['PHP_SELF'];?>"/>
<input type="text" name="username" class="mytextbox" placeholder="Username" required/>
<input type="password" name="password" class="mytextbox" placeholder="Password" required />
<input type="email" name="email" class="mytextbox" placeholder="Email" required />
<input type="submit" value="Save Menu Item" name="saveuser" class="mybutton"/>
</form>
<form> tag.<?php
if(isset($_POST[‘saveuser])){
include('../includes/conn.php');
if ($letsconnect->connect_error) {
die("Your Connection failed: " . $letsconnect->connect_error);
}else{
$menuname = $letsconnect -> real_escape_string($_POST[‘username']);
$item = $letsconnect -> real_escape_string($_POST[‘password']);
$itemlink = $letsconnect -> real_escape_string($_POST[‘email']);
$sql = "INSERT INTO menus(username,password,email) VALUES ('".$username."', '".$password."', '".$email."')";
if (mysqli_query($letsconnect, $sql)) {
echo "Your data was saved successfully!";
} else { echo "Error: " . $sql . "" . mysqli_error($letsconnect);
} $letsconnect->close();
}
}
?>
Please note that I will be covering Password security in the tutorials that follow.
<html>
<head><title>Backend - Capture Content</title></head>
<body>
<?php
if(isset($_POST['savedata'])){
include('../includes/conn.php');
if ($letsconnect->connect_error) {
die("Your Connection failed: " . $letsconnect->connect_error);
}else{
$title = $letsconnect -> real_escape_string($_POST['title']);
$content = $letsconnect -> real_escape_string($_POST['content']);
$author = $letsconnect -> real_escape_string($_POST['author']);
$sql = "INSERT INTO content (title,content,author) VALUES ('".$title."', '".$content."', '".$author."')";
if (mysqli_query($letsconnect, $sql)) {
echo "Your data was saved successfully!";
} else { echo "Error: " . $sql . "" . mysqli_error($letsconnect);
} $letsconnect->close();
}
}
?>
<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> above the submit button.<input type="text" name="content_type" placeholder="Content Type" required/>;
$content_type = $letsconnect->real_escape_string($_POST['content_type']);
$sql = "INSERT INTO content (title,content,author,content_type) VALUES ('".$title."', '".$content."', '".$author."', '".$content_type."')";
g10dra 126,011 
mike 85,344 
crocodile2u 84,233 
harikrishnanr 65,791 
calevans 40,933 
MindNovae 32,707 
dmamontov 23,253 
christiemarie 21,176 
HowTos 20,400 
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