我有以下这些功能。
public function importExcelFile(){
$file = $_FILES['file']['tmp_name'];
$data = extract_excel_data($file);
$i = 0;
foreach($data['values'] as $dataValues) {
$categories = [];
$brands = [];
$models = [];
foreach($dataValues as $value){
if(array_filter($value)) {
/* If a row does not contain brand/category/model for the product then fetch the resp. info. from previous row */
if(empty(trim($value[0]))) {
$categories[] = $prev_cat;
} else {
$categories[] = strtoupper(trim($value[0]));
$prev_cat = strtoupper(trim($value[0]));
}
if(empty(trim($value[1]))) {
$brands[] = $prev_brand;
} else {
$brands[] = strtoupper(trim($value[1]));
$prev_brand = strtoupper(trim($value[1]));
}
if(empty(trim($value[2]))) {
$models[] = $prev_model;
} else {
$models[] = $value[2];
$prev_model = $value[2];
}
}
}
//insert device category
$this->insert_setups('category', $categories);
//insert brand
$this->insert_setups('brand', $brands);
// Check if branch already exists in the database
$check_branch = $this->global_model->getDetailByWhere('branch', array('name'=>$data['branch'][$i].' branch'))->result();
$branch_arr = [];
//insert branch
if(empty($check_branch)) {
$branch_arr = array(
'name' => $data['branch'][$i].' branch',
'location' => $data['branch'][$i],
'status' => 1,
'created_by' => $this->session->userdata('id'),
'created_on' => date('Y-m-d')
);
$this->global_model->insertData('branch', $branch_arr);
}
$branch_id = $this->global_model->getDetailByWhere('branch', array('name'=>$data['branch'][$i].' branch'))->row()->id;
$db_device_categories = [];
$db_brands = [];
// get categoris, brands
$db_device_categories = $this->arrangeArray('category', $where =array());
$db_brands = $this->arrangeArray('brand', $where =array());
//detail_print($db_brands);
// insert new models from database
foreach(array_unique($models) as $model_key=>$model){
$check_model = $this->global_model->getDetailByWhere('model', array('name'=>$model))->result();
$insert = [];
if(empty($check_model)){
$insert = array(
'name' => $model,
'item_type' => 1,
'category_id' => $db_device_categories[$categories[$model_key]],
'brand_id' => $db_brands[$brands[$model_key]],
'created_by' => $this->session->userdata("id"),
'created_on' => date('Y-m-d'),
);
$this->global_model->insertData('model', $insert);
}
}
$db_device_models = [];
// get models from database
$db_device_models = $this->arrangeArray('model', $where = array('item_type'=>1));
$categoriy_id = [];
$brand_id = [];
$model_id = [];
$opening_stock = [];
// arrange the exported array with respective id
foreach($dataValues as $values){
if(array_filter($values)) {
if(empty(trim($values[0]))) {
$category_id = $prev_cat;
} else {
$category_id = strtoupper(trim($values[0]));
$prev_cat = strtoupper(trim($values[0]));
}
if(empty(trim($values[1]))) {
$brand_id = $prev_brand;
} else {
$brand_id = strtoupper(trim($values[1]));
$prev_brand = strtoupper(trim($values[1]));
}
if(empty(trim($values[2]))) {
$model_id = $prev_model;
} else {
$model_id = $values[2];
$prev_model = $values[2];
}
$opening_stock[] = array(
'category_id' => $db_device_categories[$category_id],
'brand_id' => $db_brands[$brand_id],
'model_id' => $db_device_models[$model_id],
'imei' => (string)$values[3],
'cost_price' => isset($values[5]) ? $values[5] : 0,
'selling_price' => isset($values[6]) ? $values[6] : 0
);
}
}
$group_by_model = [];
// group the array by model_id
foreach(array_unique($models) as $model1){
$where = $db_device_models[$model1];
$group_by_model[] = array_filter($opening_stock, function($elements) use ($where){
return $elements["model_id"] == $where;
});
}
if(!$this->purchase_model->insertOpeningStock($group_by_model, $branch_id)){
$this->session->set_flashdata('error', 'Opening stock of devices insertion failed.');
redirect('purchase/uploadExcelFile');
}
$i++;
}
$this->session->set_flashdata('success', 'Opening stock of devices added successfully.');
redirect('purchase/uploadExcelFile');
}
private function arrangeArray($table, $where){
$list = $this->global_model->getDetailByWhere($table, $where)->result_array();
foreach($list as $item){
$name = $item['name'];
$arranged_list[$name] = $item['id'];
}
return !empty($arranged_list) ? $arranged_list : NULL;
}
private function insert_setups($table_name, $setups){
foreach(array_unique($setups) as $value){
$check_setup = $this->global_model->getDetailByWhere($table_name, array('name'=>$value))->result();
if(empty($check_setup)){
$insert = array(
'name' => $value,
'created_by' => $this->session->userdata("id"),
'created_on' => date('Y-m-d'),
);
$this->global_model->insertData($table_name, $insert);
}
}
}
此功能的作用是，它从上传的excel文件中提取数据，并相应地将数据插入到各个表中。现在，您可以看到，在importExcelFile()方法中的不同位置运行了多个查询。所以我的问题是，如何以这样的方式使用codeigniter事务，使得此函数内的所有查询都以原子方式执行。如果任何一个查询失败，则回滚所有其他查询的工作。此外，这段代码是否被认为是干净的？
P.S。如果我的最后一个问题在这里不合适，我很抱歉。
答案 0 :(得分：2)
这可能对您有所帮助。 transactions in codeigniter
$this->db->trans_begin();
$this->db->query('AN SQL QUERY...');
$this->db->query('ANOTHER QUERY...');
$this->db->query('AND YET ANOTHER QUERY...');
if ($this->db->trans_status() === FALSE)
{
$this->db->trans_rollback();
}
else
{
$this->db->trans_commit();
}