这是因为您定义表单字段。

saveMany 的Cake Book说明数据应该在数字索引而不是文章键。
http://book.cakephp.org/2.0/en/models/saving-your-data.html#model-savemany-array-data-null-array-options-array p>

因此，您的数据是一个数字索引，但在CandidatesEmployer键下，因此 saveMany 函数没有看到任何数据

将您的保存行更改为：

  $ this-> Candidate-> CandidatesEmployer-> saveMany（$ this-> request-> data ['CandidatesEmployer']）

这样只有数字索引被传递。

I am facing problem with updating multiple record at a same time with saveMany, I have association like:

• Candidates hasMany CandidatesEmployer
• CandidatesEmployer belongsTo Candidates

Model associations in Candidate.php:

public $hasMany = array(
        'CandidatesEmployer' => array(
            'className' => 'CandidatesEmployer',
            'foreignKey' => 'candidate_id'
        )
}

here is the method in CandidatesController:

public function jbseeker_empdetails() {
        $this->layout = 'front_common';

        $Employers = $this->Candidate->CandidatesEmployer->find('all', array(
            'conditions' => array(
                'candidate_id = ' => $this->Auth->user('id')
            ),
            'recursive' => -1
        ));

        $this->set('Employers', $Employers);

        $this->set('data', $this->request->data);

        if ($this->request->is('post') && !empty($this->request->data)):


            if ($this->Candidate->CandidatesEmployer->saveMany($this->request->data)):
                $this->Session->setFlash('You Employers details has been successfully updated');
                return $this->redirect(array(
                            'controller' => 'candidates',
                            'action' => 'jbseeker_dashboard'
                ));
            else:
                $this->Session->setFlash('You Employers details has not been '
                        . 'updated successfully, please try again later!!');
            endif;

        endif;
}

jbseeker_empdetails.ctp

<h1>Enter the Employers details</h1>

<?php
if (empty($Employers)):

    echo $this->Form->create('Candidate', array('class' => 'dynamic_field_form'));

    echo $this->Form->input('CandidatesEmployer.0.candidate_id', array(
        'type' => 'hidden',
        'value' => $userId
    ));

    echo $this->Form->input('CandidatesEmployer.0.employer');

    echo $this->Form->input('CandidatesEmployer.0.from_year', array(
        'options' => array_combine(range(1950, date('Y'), 1), range(1950, date('Y'), 1))
    ));

    echo $this->Form->input('CandidatesEmployer.0.from_month', array(
        'options' => array_combine(range(1950, date('Y'), 1), range(1950, date('Y'), 1))
    ));

    echo $this->Form->input('CandidatesEmployer.0.to_year', array(
        'options' => array_combine(range(1950, date('Y'), 1), range(1950, date('Y'), 1))
    ));

    echo $this->Form->input('CandidatesEmployer.0.to_month', array(
        'options' => array_combine(range(1950, date('Y'), 1), range(1950, date('Y'), 1))
    ));

    echo $this->Form->input('CandidatesEmployer.0.position_type');

    echo $this->Form->input('CandidatesEmployer.0.headline');

    echo $this->Form->input('CandidatesEmployer.0.designation');

    echo $this->Form->input('CandidatesEmployer.0.role');

    echo $this->Form->input('CandidatesEmployer.0.annual_salary_lakhs');

    echo $this->Form->input('CandidatesEmployer.0.annual_salary_thousands');

    echo $this->Form->input('CandidatesEmployer.0.position_summary');

    echo $this->Form->input('CandidatesEmployer.0.notice_period');

    echo $this->Form->input('CandidatesEmployer.0.job_profile');

    echo $this->Form->input('CandidatesEmployer.0.created_on', array(
        'type' => 'hidden',
        'value' => date('Y-m-d H:i:s')
    ));

    echo $this->Form->input('CandidatesEmployer.0.created_ip', array(
        'type' => 'hidden',
        'value' => $clientIp
    ));

    echo $this->Form->button('Submit', array('type' => 'submit', 'class' => 'submit_button'));

    echo $this->Form->end();
    ?>

    <button class="add_more">Add more</button>

    <!-- At the end script -->
    <script type="text/javascript">
        var i = 1;
        $(".add_more").click(function () {
            $.ajax({
                url: "
    <?php
    echo $this->Html->url(array(
        $prefixUsed => FALSE, 'jbseeker' => TRUE,
        'controller' => 'candidates',
        'action' => 'jbseeker_generate_emp_form'))
    ?> / " + i,
                        type: 'GET',
                success: function (result) {
                    $('.dynamic_field_form').append(result);
                }});
            i++;
        });
    </script>

<?php else: ?>
    <?php
    echo $this->Form->create('Candidate', array('class' => 'dynamic_field_form'));
    $count = 0;
    foreach ($Employers as $employer):

        echo $this->Form->input('CandidatesEmployer.' . $count . '.id', array(
            'type' => 'hidden',
            'value' => $employer['CandidatesEmployer']['id']
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.candidate_id', array(
            'type' => 'hidden',
            'value' => $userId
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.employer', array('value' => $employer['CandidatesEmployer']['employer']));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.from_year', array(
            'options' => array_combine(range(1950, date('Y'), 1), range(1950, date('Y'), 1)),
            'default' => $employer['CandidatesEmployer']['from_year']
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.from_month', array(
            'options' => array_combine(range(1950, date('Y'), 1), range(1950, date('Y'), 1)),
            'default' => $employer['CandidatesEmployer']['from_month']
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.to_year', array(
            'options' => array_combine(range(1950, date('Y'), 1), range(1950, date('Y'), 1)),
            'default' => $employer['CandidatesEmployer']['to_year']
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.to_month', array(
            'options' => array_combine(range(1950, date('Y'), 1), range(1950, date('Y'), 1)),
            'default' => $employer['CandidatesEmployer']['to_month']
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.position_type', array('value' => $employer['CandidatesEmployer']['position_type']));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.headline', array('value' => $employer['CandidatesEmployer']['headline']));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.designation', array('value' => $employer['CandidatesEmployer']['designation']));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.role');

        echo $this->Form->input('CandidatesEmployer.' . $count . '.annual_salary_lakhs', array(
            'options' => array_combine(range(10, 90, 10), range(10, 90, 10)),
            'default' => $employer['CandidatesEmployer']['annual_salary_lakhs']
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.annual_salary_thousands', array(
            'options' => array_combine(range(10, 90, 10), range(10, 90, 10)),
            'default' => $employer['CandidatesEmployer']['annual_salary_thousands']
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.position_summary', array('value' => $employer['CandidatesEmployer']['position_summary']));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.notice_period', array('value' => $employer['CandidatesEmployer']['notice_period']));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.job_profile', array('value' => $employer['CandidatesEmployer']['job_profile']));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.updated_on', array(
            'type' => 'hidden',
            'value' => date('Y-m-d H:i:s')
        ));

        echo $this->Form->input('CandidatesEmployer.' . $count . '.updated_ip', array(
            'type' => 'hidden',
            'value' => $clientIp
        ));
        echo "<hr>";
        ?>
        <?php
        $count++;
    endforeach;
    ?>

    <?php
    echo $this->Form->button('Submit', array('type' => 'submit', 'class' => 'submit_button'));
    echo $this->Form->end();
    ?>
    <br>
    <?php
    echo $this->Html->link('Add another Employer', array(
        'controller' => 'candidates',
        'action' => 'jbseeker_addemployer'
    ));
    ?>
<?php
endif;

request data here

It's because of the way you have defined the form fields.

The Cake Book for saveMany states that data should be in "numerical index instead of article key". http://book.cakephp.org/2.0/en/models/saving-your-data.html#model-savemany-array-data-null-array-options-array

So, your data is a numerical index but under the CandidatesEmployer key, so the saveMany function isn't seeing any data to save, hence no errors.

Changing your save line to this should work:

$this->Candidate->CandidatesEmployer->saveMany($this->request->data['CandidatesEmployer'])

This way only the numerical index is passed.