我很难解决这个问题。
我刚刚开始使用phpExcel库。我正在尝试构建一个允许用户将其数据导入数据库的功能。我正在使用Code Igniter的批处理插入功能将数据发送到数据库。我可以使用它，但是我需要对范围内的某些单元格设置一些规则。例如，某些单元格不能为空，其他单元格不能为数字，依此类推。 这是我到目前为止所做的：
public function import_students_action() {
//config for file uploads
$config['upload_path'] = './assets/uploads/imports/students'; //path to save the files
$config['allowed_types'] = 'xls|xlsx'; //extensions which are allowed
$config['max_size'] = 1024 * 2; //image size cannot exceed 2MB
$config['file_ext_tolower'] = TRUE; //force file extension to lower case
$config['remove_spaces'] = TRUE; //replace space in file names with underscores to avoid break
$config['detect_mime'] = TRUE; //detect type of file to avoid code injection
$this->load->library('upload', $config);
if ( $_FILES['excel_file']['name'] == "" ) { //file is not selected
$this->session->set_flashdata('status_msg_error', "No file selected!");
$this->import_students(); //reload page
} elseif ( ( ! $this->upload->do_upload('excel_file')) && ($_FILES['excel_file']['name'] != "") ) {
//upload does not happen when file is selected
$error = array('error' => $this->upload->display_errors());
$this->import_students($error); //reload page with upload errors
} else { //file is selected, upload happens, everyone is happy
$path = $_FILES["excel_file"]["tmp_name"];
$object = PHPExcel_IOFactory::load($path);
$last_name = "";
$first_name = "";
$class = "";
$highestRow = "";
foreach ($object->getWorksheetIterator() as $worksheet) {
$highestRow = $worksheet->getHighestRow(); //last row with data
$highestColumn = $worksheet->getHighestColumn(); //last column with data
//start loop from 2nd row. Row 1 is title row
for ($row=2; $row<=$highestRow; $row++) {
$last_name = $worksheet->getCellByColumnAndRow(0, $row)->getValue();
$first_name = $worksheet->getCellByColumnAndRow(1, $row)->getValue();
$class = $worksheet->getCellByColumnAndRow(2, $row)->getValue();
$data[] = array(
'school_id' => school_id,
'last_name' => $last_name,
'first_name' => $first_name,
'class' => $class,
);
}
}
//validation rules
if ($last_name == NULL || $first_name == NULL || $class == NULL) {
$this->session->set_flashdata('status_msg_error', 'Import failed! Ensure all required fields are filled properly.');
} else {
$this->data_import_model->import_students($data);
$highestRow = $highestRow - 1; //total rows with content - 1 (title row)
$students = ($highestRow == 1) ? 'student' : 'students';
$this->session->set_flashdata('status_msg', "{$highestRow} {$students} imported successfully.");
}
redirect('data_import/import_students');
}
}
使用上述代码，即使所需单元格为空，insert命令也会执行。如果必需的单元格为空，我需要它引发错误。如果我做对了，可以应用其他规则。另外，我想知道如何将规则和错误消息作为数组应用。
任何帮助将不胜感激。
答案 0 :(得分：0)
您需要使代码停止执行或重定向到上一页，
我还使用了方法empty，因为它更方便地检测空值和空值。
检查以下代码：
public function import_students_action() {
//config for file uploads
$config['upload_path'] = './assets/uploads/imports/students'; //path to save the files
$config['allowed_types'] = 'xls|xlsx'; //extensions which are allowed
$config['max_size'] = 1024 * 2; //image size cannot exceed 2MB
$config['file_ext_tolower'] = TRUE; //force file extension to lower case
$config['remove_spaces'] = TRUE; //replace space in file names with underscores to avoid break
$config['detect_mime'] = TRUE; //detect type of file to avoid code injection
$this->load->library('upload', $config);
if ( $_FILES['excel_file']['name'] == "" ) { //file is not selected
$this->session->set_flashdata('status_msg_error', "No file selected!");
$this->import_students(); //reload page
} elseif ( ( ! $this->upload->do_upload('excel_file')) && ($_FILES['excel_file']['name'] != "") ) {
//upload does not happen when file is selected
$error = array('error' => $this->upload->display_errors());
$this->import_students($error); //reload page with upload errors
} else { //file is selected, upload happens, everyone is happy
$path = $_FILES["excel_file"]["tmp_name"];
$object = PHPExcel_IOFactory::load($path);
$last_name = "";
$first_name = "";
$class = "";
$highestRow = "";
foreach ($object->getWorksheetIterator() as $worksheet) {
$highestRow = $worksheet->getHighestRow(); //last row with data
$highestColumn = $worksheet->getHighestColumn(); //last column with data
//start loop from 2nd row. Row 1 is title column
for ($row=2; $row<=$highestRow; $row++) {
$last_name = trim($worksheet->getCellByColumnAndRow(0, $row)->getValue());
$first_name = trim($worksheet->getCellByColumnAndRow(1, $row)->getValue());
$class = trim($worksheet->getCellByColumnAndRow(2, $row)->getValue());
$data[] = array(
'school_id' => school_id,
'last_name' => $last_name,
'first_name' => $first_name,
'class' => $class,
);
}
}
//validation rules
if (empty($last_name) || empty($first_name) || empty($class) ) {
$this->session->set_flashdata('status_msg_error', 'Import failed! Ensure all required fields are filled properly.');
redirect('data_import/error');
exit;
} else {
$this->data_import_model->import_students($data);
$highestRow = $highestRow - 1; //total rows with content - 1 (title row)
$students = ($highestRow == 1) ? 'student' : 'students';
$this->session->set_flashdata('status_msg', "{$highestRow} {$students} imported successfully.");
}
redirect('data_import/import_students');
}
}