通过AJAX发送关联数组并插入数据库

Question

我有一个包含动态表行数的表。我试图将所有这些数据放入一个关联数组，然后通过AJAX将其发送到我的数据库。但是它不会插入我的数据库。

这是我的JS和AJAX

$('#submit_button').click(function(){
            var table = $("table tbody"),
                data_array = [],
                counter = 1,
                counter_error = 0;

            table.find('tr').each(function (i) {
                var $tds = $(this).find('td'),
                    category_dropdown = document.getElementById('category_' +counter),
                    category_id = category_dropdown.value;

                //alert(counter_error);
                if(category_id == "0"){
                    alert('All categories should be filled');
                    counter_error++;
                    counter++;
                }
                else if(category_id == "1" || category_id == "4"){
                    var item_dropdown = document.getElementById('items_' +counter),
                        item_id = item_dropdown.value,
                        item_description = $(item_dropdown).find(':selected').text(),
                        quantity = document.getElementById('qty_' + counter).value,
                        jan = document.getElementById('jan_' + counter).value,
                        feb = document.getElementById('feb_' + counter).value,
                        mar = document.getElementById('mar_' + counter).value,
                        apr = document.getElementById('apr_' + counter).value,
                        may = document.getElementById('may_' + counter).value,
                        jun = document.getElementById('jun_' + counter).value,
                        jul = document.getElementById('jul_' + counter).value,
                        aug = document.getElementById('aug_' + counter).value,
                        sep = document.getElementById('sep_' + counter).value,
                        oct = document.getElementById('oct_' + counter).value,
                        nov = document.getElementById('nov_' + counter).value,
                        dec = document.getElementById('dec_' + counter).value,
                        price = document.getElementById('unitprice_' + counter).innerText,
                        totalqty = 0;

                    //alert(item_description);
                    if(quantity == ""){
                        quantity = 0;
                    }    
                    if(jan == ""){
                        jan = 0;
                    }
                    if(feb == ""){
                        feb = 0;
                    }
                    if(mar == ""){
                        mar = 0;
                    }
                    if(apr == ""){
                        apr = 0;
                    }
                    if(may == ""){
                        may = 0;
                    }
                    if(jun == ""){
                        jun = 0;
                    }
                    if(jul == ""){
                        jul = 0;
                    }
                    if(aug == ""){
                        aug = 0;
                    }
                    if(sep == ""){
                        sep = 0;
                    }
                    if(oct == ""){
                        oct = 0;
                    }
                    if(nov == ""){
                        nov = 0;
                    }
                    if(dec == ""){
                        dec = 0;
                    }

                    totalqty = parseInt(jan) + parseInt(feb) + parseInt(mar) + parseInt(apr) + parseInt(may) + parseInt(jun) + parseInt(jul) + 
                        parseInt(aug) + parseInt(sep) + parseInt(oct) + parseInt(nov) + parseInt(dec);

                    //alert(quantity);
                    if(item_id == "0"){
                        alert('Please fill-up all item specifications.');
                        counter_error++;
                    }
                    else if(quantity == "0"){
                        alert('Please specify the amount/quantity for all items');
                        counter_error++;
                    }
                    else if(totalqty != quantity){
                        alert('All unit quantities should be distributed.');
                        counter_error++;
                    }
                    else{
                        //put the row element in an data_array
                        data_array.push({
                            supply_id : item_id,
                            supply_description : item_description,
                            quantity : quantity,
                            price : price,
                            jan : jan,
                            feb : feb,
                            mar : mar,
                            apr : apr,
                            may : may,
                            jun : jun,
                            jul : jul,
                            aug : aug,
                            sep : sep,
                            oct : oct,
                            nov : nov,
                            dec : dec
                        });
                    }
                    counter++;
                }
                else{
                    counter++;
                }
            });

            if(counter_error > 0){
                //do not insert to database
            }
            else{
                //insert to database

                alert(JSON.stringify(data_array));

                //convert data_array to object
                var project_details = $.extend({}, data_array);

                $.ajax({
                    type: "POST",
                    url: "<?php echo base_url('PPMP_controller/submitPPMP'); ?>",
                    data: { data_array : $.param(project_details) },
                    dataType: 'json',
                    success: function(data) {
                        alert('PPMP submission success!');
                    },
                    error: function(errorw) {
                        alert("error");
                    }
                });         
            }
        });
    }); 

这是我的控制器

public function submitPPMP(){
    $data_array = $this->input->post('data_array');
    $values = $this->PPMP_model->submitPPMP($data_array);
    echo json_encode($values);
}

这是我的模特

function submitPPMP($data_array){
    $date_format = 'DATE_W3C';

    $date_submitted = standard_date($date_format);
    $data = array(
        'user_id' => 1,
        'date_submitted' => $date_submitted,
        'first_lvl_status' => 0,
        'second_lvl_status' => 0,
        'third_lvl_status' => 0,
        'fourth_lvl_status' => 0,
        'submitted' => 1
    );
    $this->db->insert('project', $data);
    $id = $this->db->insert_id();

    if(is_array($data_array) || is_object($data_array)){
        foreach($data_array as $object){
            $project_details = array(
                'project_id' => $id,
                'supply_id' => $object->supply_id,
                'supply_description' => $object->supply_description,
                'quantity' => $object->quantity,
                'price' => $object->price,
                'jan' => $object->jan,
                'feb' => $object->feb,
                'mar' => $object->mar,
                'apr' => $object->apr,
                'may' => $object->may,
                'jun' => $object->jun,
                'jul' => $object->jul,
                'aug' => $object->aug,
                'sep' => $object->sep,
                'oct' => $object->oct,
                'nov' => $object->nov,
                'dec' => $object->dec
            );
            $this->db->insert('project_details', $project_details);
        }
    }
}

行$this->db->insert('project', data)可以使用它来更新我的数据库所需的数据。但是行$this->db->insert('project_details', $project_details)不会使用我的关联数组中的值更新我的数据库（它甚至根本不更新），即使AJAX请求成功，因为它运行{{1 }}

这是我的关联数组的值

有人可以帮我解决这个问题我不确定我的控制器/模型是否从AJAX传递给它们的关联数组。但我确定我的关联数组在将success:function(data)转换为对象之前，其内部的值为seend。

感谢您的帮助。

BTW，我使用Codeigniter 3.0作为MVC框架。