To create a custom Helper in CodeIgniter, the file must be saved in the ________ directory.
- application
- config
- system
- helper
The correct option is "a) application". In CodeIgniter, custom Helper files should be saved in the "application/helpers" directory. This directory ensures that the Helper is accessible to your application.
In CodeIgniter, how can you enable full query string support in URLs?
- Using the 'enable_query_strings' setting
- Modifying the .htaccess file
- Configuring the routes file
- Enabling the 'query_strings' option in config.php
In CodeIgniter, you can enable full query string support in URLs by setting the 'enable_query_strings' option to true in the 'config.php' file. This allows you to use traditional query string URLs instead of segment-based URLs.
To prevent script execution in uploaded files, it's important to set the correct ________ on the server.
- Encryption Key
- Execution Permission
- File Extension
- MIME Type
When uploading files, setting the correct MIME type on the server is crucial to prevent the execution of scripts. This ensures that only valid file types are accepted, enhancing security.
To enable RESTful API functionality in CodeIgniter, the ________ must be configured correctly.
- Route.php
- autoload.php
- config.php
- database.php
In CodeIgniter, enabling RESTful API requires correct configuration in the 'config.php' file, specifying routes, and ensuring proper setup for the RESTful services.
How does CodeIgniter's Model handle relationships between different database tables?
- Connecting tables using the 'query' method
- Defining relationships through the 'relationship' method
- Using the 'has_one' and 'has_many' methods to define relationships
- Utilizing the 'join' method to establish table connections
CodeIgniter's Model provides the 'has_one' and 'has_many' methods, allowing developers to establish relationships between different database tables. These methods make it easy to define associations such as one-to-one and one-to-many, providing a structured approach to working with database relationships.
How does AJAX contribute to form validation in modern web applications?
- Allows asynchronous communication with the server to validate form data.
- Enhances user experience by providing real-time validation feedback.
- Ensures server-side validation only.
- Improves security by encrypting form data during validation.
AJAX (Asynchronous JavaScript and XML) facilitates real-time communication with the server, allowing form validation without a page refresh. It enhances user experience and responsiveness by providing immediate feedback to users, reducing the need for server-side validation only. AJAX doesn't necessarily improve security; its focus is on enhancing user interaction and reducing latency.
To limit the results returned by a query, the Active Record Class method ________ is used.
- filter()
- limit()
- narrow()
- restrict()
The limit() method in the Active Record Class is used to restrict the number of records returned by a query. It takes two parameters - the number of records to return and the offset.
In CodeIgniter, debugging information about database queries can be displayed using ______.
- debug_queries()
- display_queries()
- log_queries()
- show_queries()
CodeIgniter allows you to debug database queries using the debug_queries() method. This function outputs information about the executed database queries, including the SQL statements, execution time, and other relevant details.
Which MVC component acts as a bridge between the Model and the View?
- Controller
- Middleware
- Router
- ViewModel
The Controller serves as a bridge between the Model and the View in CodeIgniter's MVC pattern. It handles user input, processes it using the Model, and sends the results to the View for presentation.
In advanced web applications, how is token-based CSRF protection typically implemented?
- Embedding CSRF tokens in the HTML forms.
- Including CSRF tokens in the URL parameters.
- Storing CSRF tokens in session cookies.
- Using IP-based verification for each request.
In advanced web applications, token-based CSRF protection is typically implemented by embedding CSRF tokens in the HTML forms. These tokens act as a unique, unpredictable value associated with the user's session. When the form is submitted, the server checks if the token matches the expected value, thus verifying the legitimacy of the request and preventing CSRF attacks.