How to filter by cities States in Laravel?

I made a filter in laravel and it works perfectly but nevertheless it brings all the cities. It does not bring the specific cities of that state. I do not know if this filter has to go there in the laravel controller, how does it work for jquery? I’m using a Rest-Full web-service

I’m passing in the postman as follows:
link

It returns me all states:

LookatmytablesandmycontrollersinLARAVEL.IstillputJQUERY:

CONTROLLERmunicipalities

namespaceAppHttpControllers;useIlluminateHttpRequest;useAppMunicipios;classMunicipiosControllerextendsController{publicfunctionindex(){$municipios=Municipios::with('estados')->get();returnresponse()->json($municipios);}publicfunctionshow($id){print_r('teste');$municipios=Municipios::with('estados')->find($id);if(!$municipios){returnresponse()->json(['message'=>'Nãoháresultados',],404);}returnresponse()->json($municipios);}}

MODELMUNICIPALITIES

namespaceApp;useIlluminateDatabaseEloquentModel;classMunicipiosextendsModel{protected$fillable=['nome','cep'];protected$primaryKey='municipios_id';publicfunctionestados(){return$this->belongsTo('AppEstados');}}

MODELSTATES

namespaceApp;useIlluminateDatabaseEloquentModel;classEstadosextendsModel{protected$fillable=['nome','sigla'];protected$primaryKey='estados_id';publicfunctionmunicipios(){return$this->hasMany('AppMunicipios');}}

CONTROLLERSTATES:

namespaceAppHttpControllers;useIlluminateHttpRequest;useAppEstados;classEstadosControllerextendsController{//publicfunctionindex(){$estados=Estados::all();returnresponse()->json($estados);}}

ROUTESFILE:

useIlluminateHttpRequest;Route::get('/',function(){returnresponse()->json(['message'=>'RepApi','status'=>'Connected']);;});Route::resource('clientes','ClientesController');Route::resource('fornecedores','FornecedoresController');Route::resource('usuarios','UsuariosController');Route::resource('estados','EstadosController');Route::resource('municipios','MunicipiosController');Route::post('autenticacao','AuthController@authenticate');

MUNICIPALTABLES:

useIlluminateSupportFacadesSchema;useIlluminateDatabaseSchemaBlueprint;useIlluminateDatabaseMigrationsMigration;classCreateTableMunicipiosTableextendsMigration{/***Runthemigrations.**@returnvoid*/publicfunctionup(){Schema::dropIfExists('municipios');Schema::create('municipios',function(Blueprint$table){$table->increments('municipios_id');$table->integer('estados_id')->unsigned();$table->string('nome',100);$table->char('cep',10);$table->timestamps();$table->softDeletes();});}/***Reversethemigrations.**@returnvoid*/publicfunctiondown(){Schema::dropIfExists('municipios');}}

TABLESTATES:

useIlluminateSupportFacadesSchema;useIlluminateDatabaseSchemaBlueprint;useIlluminateDatabaseMigrationsMigration;classCreateTableEstadosTableextendsMigration{/***Runthemigrations.**@returnvoid*/publicfunctionup(){Schema::dropIfExists('estados');Schema::create('estados',function(Blueprint$table){$table->increments('estados_id');$table->string('nome',100);$table->char('sigla',2);$table->timestamps();$table->softDeletes();});}/***Reversethemigrations.**@returnvoid*/publicfunctiondown(){Schema::dropIfExists('estados');}}

JQUERY:

//outrasfunçõesdevalidaçãodoformuláriofunctionretorna_estados(){varopcaoCadastro="";
    $.ajax({
      url: url_base + "estados",
      type: 'GET',
      dataType: 'json',
      success: function(data)
      {
        data.forEach(function (item)
        {
          opcaoCadastro = $("<option value=" + item.estados_id + " data-nome-estado='" + item.nome + "'>" + item.nome + "</option>");
          $("#estado_cliente").append(opcaoCadastro);

          opcaoCadastro = $("<option value=" + item.estado_id + " data-nome-estado='" + item.nome + "'>" + item.nome + "</option>");
          $("#estado_fornecedor").append(opcaoCadastro);

        });
      },
      error:function(data)
      {
        console.log(data);
      }
    });
  }

  // AO SELECIONAR UM ESTADO DA FEDERAÇÃO
  $("#estado_cliente").change(function ()
  {
    var options_cidades = '';
    var idEstado = "";

    $("#estado_cliente option:selected").each(function ()
    {
      idEstado += $(this).attr('value');

      $.ajax({
        url: url_base + "municipios?filter[estados_id]=" + idEstado,
        type: 'GET',
      }).done(function (retorno)
      {
        $.each(retorno.data, function (key, val)
        {
          if (val.estados_id == idEstado)
          {
            options_cidades += '<option value="' + val.municipios_id + '" data-nome-cidade="' + val.nome +'">' + val.nome + '</option>';
            $("#cidade_cliente").append(options_cidades);
          }
        });
      }).fail(function (data)
      {
        console.log(data);
      });

    });

  }).change();

    

I do not do it in Laravel 5.2

View

<script type="text/javascript">
$('select[name=uf]').change(function () {
    var uf = $(this).val();
    $.get('/logistica/get-cidades/' + uf, function (busca) {
        $('select[id=comarca_id]').empty();
            $('select[id=comarca_id]').append('<option value=""> </option>');
        $.each(busca, function (key, value) {
            $('select[id=comarca_id]').append('<option value="' + value.id + '">' + value.name + '</option>');
        });
    });
});

Route

Route::get('/get-cidades/{uf}', [
    'middleware' => 'auth',
    'uses' => 'ExecucaoController@get_cidades'
    ]);

Note: remember that on the route I use a “logistical” prefix.

Controller

public function get_cidades($id)
{
    $comarca = DB::table('cidades')
      ->where('uf','=', $id)
      ->orderBy('name','asc')
      ->get();

    return Response::json($comarca);
}