What advanced technique does CodeIgniter provide for managing complex database schemas?
- Data Seeding
- Database Migrations
- Eloquent ORM
- Query Caching
CodeIgniter provides the concept of Database Migrations, allowing developers to version control database schema changes and manage complex database schemas over time. This ensures smooth database schema evolution as the application evolves.
Which of the following best describes the 'View' component in MVC architecture?
- It handles user input and communication between Model and Controller.
- It manages the user interface and presentation logic.
- It represents the application's data and business logic.
- It stores configuration settings for the application.
In MVC architecture, the 'View' component manages the user interface and presentation logic. It is responsible for displaying data to the user and formatting it appropriately. The View should remain decoupled from the business logic to ensure code maintainability and flexibility.
How does custom error handling in CodeIgniter enhance security?
- It automatically redirects users to a secure error page.
- It encrypts error messages for added security.
- It logs errors without displaying them to users.
- It prevents sensitive information leakage by displaying generic error messages to users.
Custom error handling in CodeIgniter enhances security by preventing sensitive information leakage. Instead of displaying detailed error messages to users, it's recommended to show generic messages to avoid potential security risks.
What is the minimum PHP version required to install CodeIgniter 4?
- 5.6
- 7
- 7.2
- 7.4
CodeIgniter 4 requires a minimum PHP version of 7.2. It utilizes features and improvements introduced in PHP 7.2 and later, ensuring compatibility and taking advantage of the latest language enhancements.
A developer needs to add a new table to the database without disrupting the existing data. The first step they should take is to create a ________.
- Controller
- Migration
- Model
- View
In CodeIgniter, when adding a new table to the database without disrupting existing data, developers should create a migration. Migrations allow for version control of the database schema, enabling easy management of changes while preserving data integrity.
How does the 'third_party' directory differ from the 'libraries' directory in CodeIgniter?
- It contains external libraries and packages.
- It holds third-party assets like images and styles.
- It is a reserved directory for future framework use.
- It is used for storing custom CodeIgniter libraries.
The 'third_party' directory is intended for external libraries and packages, while the 'libraries' directory is meant for custom libraries created within the application.
To simulate a database in unit tests, CodeIgniter recommends using ________.
- FakeDatabase
- MockDatabase
- SimDatabase
- TestDatabase
CodeIgniter suggests using the CIUnitTestCase class and the DBUnitTestCaseTrait trait to simulate a database in unit tests. This helps in testing database interactions without affecting the actual database.
In CodeIgniter, which method is recommended for sending form data to a view?
- $this->form->open()
- $this->load->form()
- $this->load->form_open()
- $this->load->helper('form')
The recommended method for sending form data to a view in CodeIgniter is by loading the form helper using $this->load->helper('form'). This helper provides functions to create form elements and handle form submissions efficiently.
The ________ function in CodeIgniter's Query Builder is essential for debugging by returning the final query string.
- debug_query()
- final_query()
- get_query()
- last_query()
The correct function for retrieving the final query string in CodeIgniter's Query Builder is last_query(). It is a valuable tool for debugging, as it allows developers to inspect the actual SQL query that was generated by the Query Builder.
In CodeIgniter, how are complex data relationships managed in a RESTful API serving multiple related resources?
- CodeIgniter relies on raw SQL queries for managing complex data relationships.
- CodeIgniter uses middleware for managing complex data relationships in RESTful APIs.
- CodeIgniter uses the ORM (Object-Relational Mapping) feature to handle complex data relationships in RESTful APIs.
- Complex data relationships are not supported in CodeIgniter RESTful APIs.
CodeIgniter leverages its ORM feature to manage complex data relationships in RESTful APIs efficiently. The ORM simplifies database interactions, allowing developers to define and work with relationships between different resources. This enhances the maintainability and readability of the code, making it easier to handle complex data scenarios in a RESTful API context.
For a CodeIgniter API that dynamically converts database query results to XML and JSON, the most critical aspect to optimize for performance is ________.
- Caching the API responses
- Database query optimization
- Output compression
- XML and JSON parsing
In a CodeIgniter API converting database query results to XML and JSON, the most critical aspect for performance optimization is optimizing the underlying database queries. Efficient queries contribute significantly to overall API response time.
Custom error pages in CodeIgniter are typically managed through the ________ directory.
- application/error-pages
- application/errors
- application/system/errors
- application/views/errors
CodeIgniter typically manages custom error pages in the application/views/errors directory. This is where you can create custom views for various error types, providing a more user-friendly experience for your application's users when errors occur.