Laravel-多才多艺

Question

I just started learning laravel, and i'm struglling with Eloquent Relationships! I have two tables, they are both multi-level:

Paginas-

• IdPagina PK
• name
• Parent

example:

  idPagina  name   parent 
  1          A      Null
  2          B       1

Categorias -

• IdCategoria PK
• name
• Parent

• IdPagina - FK

  Example:

 idCategoria name parent idPagina 1 C Null 2 2 D 1 2 

Well...so I want to get something like this:

• A - Parent

• B - (A's)Child

• C - (B's) Child

• D - (C's) Child

Then I have Paginas model:

  class Paginas extends Eloquent{    

     public function children() {         
         return $this->hasMany('app\paginas', 'parent', 'idPagina');
         } 

          public static function tree() {
         return static::with(implode('.', array_fill(1, 10, 'children')))->where('parent', '=', null)->get();

       }}

---

And categorias model:

class Categoria extends Eloquent{




 public function children() {
 return $this->hasMany('app\categoria', 'parent', 'idCategoria');

    }

     public static function tree() {

 return static::with(implode('.', array_fill(1, 10, 'children')))->where('parent', '=', null)->get();

 }
}

and now I just want to join both tables!

EDITED

Well, i just added the codes Stephen Lewis suggested! But now i can't get the multi-level as i want to, here is the blade code

@foreach($paginas as $pagina)
  <h1>{{$pagina -> nomePag}}</h1>
   @foreach ($pagina -> children as $child)
     <h3>{{$child -> nomePag}}</h3>
     @foreach($pagina -> categorias as $categoria)
         {{$categoria -> nomeCat}}
     @endforeach
   @endforeach
@endforeach

well, i just can't get the $categoria related to the $pagina -> children

Answer 1

Add this to the Categoria class:

public function pagina()
{
    return $this->belongsTo('Pagina', 'idPagina');
}

You can also specify the other side of the relationship, by adding this to the Pagina class:

public function categorias()
{
    return $this->hasMany('Categoria', 'idPagina');
}

Further information on how to work with Eloquent relationships is available in the docs .