In a RESTful API built with CodeIgniter, how is pagination typically implemented for resource listings?
- Embedding pagination information in the request headers.
- Including pagination details in the request body.
- Using query parameters such as "page" and "limit" in the API endpoint URL.
- Utilizing cookies to store and retrieve pagination details.
In a RESTful API built with CodeIgniter, pagination for resource listings is typically implemented by using query parameters such as "page" and "limit" in the API endpoint URL. This allows clients to request specific pages and control the number of items per page.
What is the default behavior of transactions in CodeIgniter regarding auto-commit?
- Auto-commit is disabled by default
- Auto-commit is enabled by default
- CodeIgniter does not support transactions
- Depends on the database driver
In CodeIgniter, the default behavior of transactions is that auto-commit is enabled by default. This means that each SQL statement is treated as a single transaction and is automatically committed.
How does CodeIgniter's 'Form Validation' class contribute to application security?
- Encrypts database connections
- Enhances input data integrity
- Implements secure file uploads
- Provides secure login functionality
CodeIgniter's 'Form Validation' class enhances input data integrity by validating and filtering user input, reducing the risk of security vulnerabilities such as SQL injection and XSS attacks. It ensures that only valid and expected data is processed, contributing to overall application security.
What is the impact of using the 'strict' mode in CodeIgniter transactions?
- 'Strict' mode ensures that transactions are executed only if the database engine supports transactions.
- 'Strict' mode has no impact on CodeIgniter transactions.
- 'Strict' mode prevents CodeIgniter from automatically rolling back a transaction if an error occurs during its execution.
- In 'strict' mode, CodeIgniter throws an exception if any database error occurs during a transaction.
When 'strict' mode is enabled, CodeIgniter will automatically roll back a transaction if any database error occurs during its execution. This helps maintain data integrity by preventing the application from continuing with potentially corrupt data. It ensures that transactions are handled more cautiously, and the system responds promptly to any issues that may compromise the transaction.
In a blog application, when a post is updated, the Active Record Class method sequence that is most appropriate is: ________.
- set()
- update()
- update_batch()
- where()
The correct sequence for updating a record in CodeIgniter using Active Record is set() to set the values, followed by where() to specify the condition, and then update() to perform the update. update_batch() is used for updating multiple records simultaneously.
The ________ method in CodeIgniter is used to load a library, helper, or model.
- import()
- include()
- load()
- require()
The load() method in CodeIgniter is used to load a library, helper, or model. It is a fundamental method for loading various resources into your CodeIgniter application, facilitating code organization and reuse.
In CodeIgniter, how can you specify dependencies between different migrations?
- By creating a separate configuration file
- By defining dependencies in the migration command
- It's not possible to specify dependencies
- Using the $depends property in migration files
CodeIgniter allows you to specify dependencies between migrations using the $depends property in migration files. This helps in ensuring that migrations are executed in a specific order, addressing any dependencies between them.
What is the primary difference between session data and flashdata in CodeIgniter?
- Flashdata is only available during the next server request and is then automatically cleared.
- Flashdata is stored in cookies, while session data is not.
- Session data is only used for flash messages and not other data.
- Session data persists throughout the user's entire session.
The primary difference between session data and flashdata in CodeIgniter lies in their lifespan. Session data persists throughout the user's entire session, while flashdata is only available during the next server request and is automatically cleared afterward. Flashdata is useful for temporary messages or data that needs to be displayed once, such as flash messages, while session data is suitable for information that should persist across multiple requests during a user's session. Understanding this difference is crucial for effective use of session-related features in CodeIgniter.
When setting up a new environment for testing, the developer should configure specific settings in the ________ directory.
- application/config
- application/config/testing
- system/config
- system/environment/testing
The application/config directory is used to store configuration files for different environments. For testing configurations, developers should create a testing folder within application/config.
How does CodeIgniter's architecture facilitate the transformation of database results into XML or JSON formats?
- Active Record Pattern
- MVC Pattern
- Observer Pattern
- Singleton Pattern
CodeIgniter follows the MVC pattern, which separates the application into models, views, and controllers. This separation makes it easy to transform database results into XML or JSON formats using views.