Technology

3 minutes read
To select a table using a string in Oracle, you can use dynamic SQL. Dynamic SQL allows you to execute SQL statements stored in strings. You can use the EXECUTE IMMEDIATE statement to run the SQL statement.
3 minutes read
To query MongoDB with "like" in CodeIgniter, you can use the MongoDB query operators like $regex.
4 minutes read
To call a PostgreSQL function in CodeIgniter, you can use the $this->db->query() method provided by CodeIgniter's database library.You can write the PostgreSQL function call as a SQL query string and pass it as a parameter to the $this->db->query() method.
5 minutes read
To post data from Node.js to CodeIgniter, you can use the request module in Node.js to make HTTP POST requests to the CodeIgniter application. First, you need to set up a route in your CodeIgniter application to handle the POST request and process the data. Then, in your Node.js application, you can use the request module to send the data to the route you have set up in CodeIgniter. Make sure to include the necessary headers and data in the POST request.
5 minutes read
In CodeIgniter, you can display a record by id by creating a function in your controller that retrieves the data from the database based on the provided id. You can use the model's method to fetch the record with the given id and pass it to the view for display. Make sure to properly handle cases where the record with the specified id does not exist to avoid errors.How to fetch a record by ID with a JOIN query in CodeIgniter.
6 minutes read
Pagination in CodeIgniter can be implemented easily by using the built-in pagination library. To create pagination in CodeIgniter, you first need to load the pagination library in your controller. Next, you need to configure the pagination settings such as the total number of items, the number of items to show per page, and the base URL.
4 minutes read
To force download a zip file in CodeIgniter, you can use the following code in your controller: public function downloadZip() { $file = 'path_to_your_zip_file.zip'; // Specify the path to your zip file header('Content-Type: application/zip'); header('Content-Disposition: attachment; filename="'.basename($file).'"'); header('Content-Length: ' . filesize($file)); readfile($file); } Make sure to replace 'path_to_your_zip_file.
5 minutes read
To check if a view file exists in CodeIgniter, you can use the file_exists() function provided by PHP. This function checks if a file or directory exists in the specified path.To check if a view file exists in CodeIgniter, you can use the file_exists() function along with the APPPATH constant to get the full path to the view file. For example: $view_file = APPPATH . 'views/my_view.php'; if (file_exists($view_file)) { echo 'View file exists.
6 minutes read
In CodeIgniter, you can send values from the controller to the model by simply passing them as parameters when calling a method in the model.
3 minutes read
To use the json_contains function in CodeIgniter, you can write a custom query using the Query Builder class. First, you will need to load the Query Builder in your controller or model. Then, you can use the select() method to include the json_contains function in your query.