join - Relationships in has many laravel -

i have 3 tables units, renters, renter_units. fields of render_units table id , unit_id, renter_id.

my render model is

public function renter_unit()      {         return $this->hasmany('app\renterunit');     } 

and in renterscontroller

$renters = renter::with('renter_unit')->get(); 

so $renders array shows

collection {#212 ▼   #items: array:1 [▼     0 => renter {#206 ▼       #fillable: array:3 [▶]       #table: "renters"       #guarded: array:1 [▶]       #connection: null       #primarykey: "id"       #perpage: 15       +incrementing: true       +timestamps: true       #attributes: array:7 [▶]       #original: array:7 [▶]       #relations: array:1 [▼         "renter_unit" => collection {#210 ▼           #items: array:2 [▼             0 => renterunit {#213 ▼               #fillable: array:2 [▶]               #table: "renter_units"               #guarded: array:1 [▶]               #connection: null               #primarykey: "id"               #perpage: 15               +incrementing: true               +timestamps: true               #attributes: array:5 [▼                 "id" => 1                 "unit_id" => 1                 "renter_id" => 1                 "created_at" => "2016-06-11 02:40:44"                 "updated_at" => "2016-06-11 02:40:44"               ]               #original: array:5 [▶]               #relations: []               #hidden: []               #visible: []               #appends: []               #dates: []               #dateformat: null               #casts: []               #touches: []               #observables: []               #with: []               #morphclass: null               +exists: true               +wasrecentlycreated: false             }             1 => renterunit {#214 ▶}           ]         }       ]       #hidden: []       #visible: []       #appends: []       #dates: []       #dateformat: null       #casts: []       #touches: []       #observables: []       #with: []       #morphclass: null       +exists: true       +wasrecentlycreated: false     }   ] } 

but want relationship array renter_unit field too. how achieve ?

may should use many-to-many relationship. if so, don't need pivot class renterunit, renter_unit table
code below

renter.php

public function units()  {     return $this->belongstomany('app\unit'); } 

unit.php

public function renters()  {     return $this->belongstomany('app\renter'); } 

in renterscontroller can access units related each renter instance

$renters = renter::with('units')->get(); foreach($renters $renter) {      $units = $renter->units; //here are, it's collection }