asd

debug($this->request->data):
[
	'users' => [
		(int) 0 => [
			'_joinData' => [
				'rank' => '0'
			]
		],
		(int) 1 => [
			'_joinData' => [
				'rank' => '0'
			]
		]
	]
]
VIEW:
				<?= $this->Form->create($association) ?>
				<?php $i = 0; ?>
				<?php foreach ($association->users as $user) : ?>
					<tr>
						<td><?= $user->username ?></td>
						<td><?= $user->_joinData->created; ?></td>
						<td>
						<?= $this->Form->select('users.' . $i . '._joinData.rank', ['options' => ['0' => 'User', '1' => 'Author']]); ?></td>
						<?php $i = $i + 1; ?>

					</tr>
				<?php endforeach ?>
CONTROLLER:
$association = $this->Associations->get($id, [
            'contain' => ['Users']
        ]);

		if ($this->request->is(['patch', 'post', 'put'])) {
			$association = $this->Associations->patchEntity($association, $this->request->data, ['associated' => ['Users' => ['validate' => false]]]);
			debug($this->request->data);
			debug($association);
			die();
			if ($this->Associations->save($association, ['associated' => ['Users' => ['validate' => false]]])) {
                $this->Flash->success(__('Your changes have been saved.'));
                return $this->redirect(['action' => 'index']);
            } else {
                $this->Flash->error(__('Your changes could not be saved. Please, try again.'));
            }
		}

        $this->set('association', $association);
        $this->set('_serialize', ['association']);

debug:
object(App\Model\Entity\Association) {

	'id' => (int) 1,
	'name' => '123',
	'users' => [
		(int) 0 => object(App\Model\Entity\User) {

			'_joinData' => object(App\Model\Entity\UserAssociation) {

				'rank' => (int) 0,
				'[new]' => true,
				'[accessible]' => [
					'*' => true
				],
				'[dirty]' => [
					'rank' => true
				],
				'[original]' => [],
				'[virtual]' => [],
				'[errors]' => [],
				'[invalid]' => [],
				'[repository]' => 'UserAssociation'

			},
			'[new]' => true,
			'[accessible]' => [
				'*' => true,
				'_joinData' => true
			],
			'[dirty]' => [
				'_joinData' => true
			],
			'[original]' => [
				'_joinData' => [
					'rank' => '0'
				]
			],
			'[virtual]' => [],
			'[errors]' => [],
			'[invalid]' => [],
			'[repository]' => 'Users'

		},
		(int) 1 => object(App\Model\Entity\User) {

			'_joinData' => object(App\Model\Entity\UserAssociation) {

				'rank' => (int) 0,
				'[new]' => true,
				'[accessible]' => [
					'*' => true
				],
				'[dirty]' => [
					'rank' => true
				],
				'[original]' => [],
				'[virtual]' => [],
				'[errors]' => [],
				'[invalid]' => [],
				'[repository]' => 'UserAssociation'

			},
			'[new]' => true,
			'[accessible]' => [
				'*' => true,
				'_joinData' => true
			],
			'[dirty]' => [
				'_joinData' => true
			],
			'[original]' => [
				'_joinData' => [
					'rank' => '0'
				]
			],
			'[virtual]' => [],
			'[errors]' => [],
			'[invalid]' => [],
			'[repository]' => 'Users'

		}
	],
	'[new]' => false,
	'[accessible]' => [
		'*' => true
	],
	'[dirty]' => [
		'users' => true
	],
	'[original]' => [
		'users' => [
			(int) 0 => object(App\Model\Entity\User) {

				'id' => (int) 2,
				'username' => 'name',
				'password' => '',
				'email' => '',
				'img' => 'users/blank-profile-picture.png',
				'created' => object(Cake\I18n\FrozenTime) {

					'time' => '2016-02-04T00:00:00+00:00',
					'timezone' => 'UTC',
					'fixedNowTime' => false

				},
				'modified' => object(Cake\I18n\FrozenTime) {

					'time' => '2016-09-27T14:17:20+00:00',
					'timezone' => 'UTC',
					'fixedNowTime' => false

				},
				'role' => 'admin',
				'api_key' => '',
				'api_key_plain' => '',
				'verified' => true,
				'banned' => false,
				'last_login' => object(Cake\I18n\FrozenTime) {

					'time' => '2016-09-27T14:17:20+00:00',
					'timezone' => 'UTC',
					'fixedNowTime' => false

				},
				'_joinData' => object(App\Model\Entity\UserAssociation) {

					'user_id' => (int) 2,
					'id' => (int) 0,
					'association_id' => (int) 1,
					'created' => object(Cake\I18n\FrozenTime) {

						'time' => '2016-09-15T06:00:00+00:00',
						'timezone' => 'UTC',
						'fixedNowTime' => false

					},
					'rank' => (int) 0,
					'[new]' => false,
					'[accessible]' => [
						'*' => true
					],
					'[dirty]' => [],
					'[original]' => [],
					'[virtual]' => [],
					'[errors]' => [],
					'[invalid]' => [],
					'[repository]' => 'UserAssociation'

				},
				'[new]' => false,
				'[accessible]' => [
					'*' => true,
					'_joinData' => true
				],
				'[dirty]' => [],
				'[original]' => [],
				'[virtual]' => [],
				'[errors]' => [],
				'[invalid]' => [],
				'[repository]' => 'Users'

			},
			(int) 1 => object(App\Model\Entity\User) {

				'id' => (int) 13,
				'username' => 'random username',
				'password' => '',
				'email' => '',
				'img' => '',
				'created' => object(Cake\I18n\FrozenTime) {

					'time' => '2016-05-06T10:39:02+00:00',
					'timezone' => 'UTC',
					'fixedNowTime' => false

				},
				'modified' => object(Cake\I18n\FrozenTime) {

					'time' => '2016-05-06T10:46:58+00:00',
					'timezone' => 'UTC',
					'fixedNowTime' => false

				},
				'role' => 'user',
				'api_key' => '',
				'api_key_plain' => '',
				'verified' => true,
				'banned' => false,
				'last_login' => null,
				'_joinData' => object(App\Model\Entity\UserAssociation) {

					'user_id' => (int) 13,
					'id' => (int) 1,
					'association_id' => (int) 1,
					'created' => object(Cake\I18n\FrozenTime) {

						'time' => '2016-09-12T06:00:00+00:00',
						'timezone' => 'UTC',
						'fixedNowTime' => false

					},
					'rank' => (int) 0,
					'[new]' => false,
					'[accessible]' => [
						'*' => true
					],
					'[dirty]' => [],
					'[original]' => [],
					'[virtual]' => [],
					'[errors]' => [],
					'[invalid]' => [],
					'[repository]' => 'UserAssociation'

				},
				'[new]' => false,
				'[accessible]' => [
					'*' => true,
					'_joinData' => true
				],
				'[dirty]' => [],
				'[original]' => [],
				'[virtual]' => [],
				'[errors]' => [],
				'[invalid]' => [],
				'[repository]' => 'Users'

			}
		]
	],
	'[virtual]' => [],
	'[errors]' => [],
	'[invalid]' => [],
	'[repository]' => 'Associations'

}