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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);
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mike 79,617 
crocodile2u 78,095 
harikrishnanr 62,308 
calevans 37,837 
MindNovae 28,788 
dmamontov 19,379 
tanja 16,723 
damnjan 13,157 
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