Yii is a component-based PHP framework designed to create modern web applications with excellent performance.
Yii's scaffolding features and quick AJAX design make it the ideal platform to quickly develop Create, Read, Update, Delete (CRUD) apps. Yii offers ready-to-use features, such as role-based access control and testing caching authentication, giving developers everything they need for secure, effective, manageable online apps.
CREATE, READ, UPDATE and DELETE are commonly abbreviated as "CRUD." This term represents four core processes used for creating and managing permanent data elements - mainly within relational and NoSQL databases - through these four fundamental steps.
This Post will cover how Yii with CRUD activities apply to data processing. In particular, we'll examine any problems DevOps engineers and sysadmins may face when overseeing databases.
As previously indicated, persistent storage applications that retain data even after power has been turned off often use CRUD processes to manage it.
These operations distinguish themselves from operations performed on data stored temporarily, such as cache files, or Random Access Memory, such as RAID servers.
Database applications rely heavily on CRUD operations for their data needs, from relational database management systems such as PostgreSQL, MySQL and Oracle to NoSQL databases like MongoDB and Apache Cassandra.
Persistent data structures like files can be utilized for CRUD operations. Using the file explorer, for instance, Microsoft Word documents may be created, edited, viewed and deleted - though files do not adhere to record orientation as they would in Couchbase and MongoDB systems.
Specifically, record-oriented operations (as opposed to flat file ones) are at the core of CRUD terminology.
A database record is added through the CREATE operation in an RDBMS table row by adding one or more records with unique field values by the development company performing this action.
Records in an RDBMS are known as records, while their columns or attributes may also be known. Each table may receive one or more new records through CREATE action, further expanding its data.
NoSQL databases follow a similar structure; when adding wide range documents (JSON formatted documents containing their attributes) to their collection (the equivalent of RDBMS tables in document-oriented NoSQL databases like DynamoDB), new documents are added in development process like records to an RDBMS table via CREATE operations such as adding them through CREATE operations in CREATE operations of NoSQL databases such as DynamoDB's CREATE operation.
With certain search parameters in mind, READ can retrieve records (or documents or things) from a database table collection or bucket using content management system READ's retrieval operation.
READ's retrieval mechanism could return all records with any or all fields.
UPDATE is used to modify existing database records - such as price changes in product in development time databases or address updates in customer databases - instead of adding entirely new records like READ does.
UPDATE can apply globally or just to certain records in security measures depending on its criteria for application.
One or more fields within a record can be modified and updated using just a single UPDATE operation. At the same time, the database system ensures they all get updated completely or not at all.
Some big data systems only support in application development timestamped CREATE operations, which add a new version every time instead of UPDATEs.
Also Read: Efficiency Unleashed: Yii RESTful APIs for 3x Scalable Web Services
Users can delete records from a database by employing DELETE procedures. Soft deletion in rapid development marks the record but leaves it intact.
At the same time, hard delete will eliminate it - essential in payroll scenarios where keeping employment data updated even after employees depart is key to meeting deadlines and staying competitive in business environments.
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Gii is one of Yii tools powerful for producing code for routine operations such as CRUD (create, read, update and delete) unit testing.
But sometimes you might require altering this output code to be more closely aligned to your requirements or preferences; this tutorial will cover six simple steps of using Yii Gii to customize and personalize the produced CRUD code.
Gii can assist with creating the initial code needed for CRUD operations as the first popular PHP framework development step.
By adding "/gif" to your app URL, you can access Gii from any web browser; once in, enter your password before clicking on 'CRUD Generator Link and filling in all required fields - Model Class Field in development solutions being most essential; Name your Active Record Class that represents database table you wish to perform operations against (for instance Post), Module ID Base Controller Class View Path or Controller Class can all be specified here as necessary before proceeding further development.
Examination and understanding of the generated code is the second step of this process, located within your application's controllers, models and views folders.
Each controller class will offer four actions: create, update, view, and index in source code. Index action displays all table records in grid format; single record details will be presented via view action for faster development; create and update actions provide forms to create or modify in code generator records, respectively.
The model class in controller action will contain rules, labels, scenarios, and behaviors related to verifying and editing data in Yii PHP framework. Four PHP files - index.php, view.php, _form.php and _search.php will reside within the views folder - with index.php being responsible for rendering grid views while detail views using view.php files while forms used for adding or editing records will use _form.php while filtering search forms will rely on _search.php code as they deem fit.
The third phase is customizing the controller code to add, alter, or delete desired functionality. For instance, adding custom logic, flash in model view controller messages, authorization checks or redirections could add custom logic and redirections you would like.
Furthermore, menu items, layout and breadcrumb changes could be made too by changing controller class files in the controller's folder; for PostController use cases, this means changing the PostController.php file directly to alter its code.
The fourth phase is to modify model code to modify scenarios, labels, validation rules or data behaviors. Change error messages, modular architecture, add or remove rules, or create unique situations for use cases that differ from typical component based architecture use cases.
Any application development services methods or relations within your model class could also be altered as necessary - changes must be made directly within its model class file located within the model's folder (for instance, Post.php if your class name is Post).
The fifth stage is customizing the view code to alter the appearance and arrangement of CRUD pages. For instance, you might alter search form options, form fields, detail view characteristics or grid view columns or add or remove HTML elements, CSS styles or JavaScript scripts via view files in the views folder if your view path is Post.
Edit these files until desired results can be achieved - for instance, making changes in the index.php file in the views/post folder or altering the index.php file from the views folder to change the view code directly.
Testing and debugging your modified code to ensure it functions as intended is the final stage. You can access CRUD pages via browser and explore their functionality with different inputs and actions using tools such as Yii Debugger or Log.
If any problems or glitches appear with your code, Yii Debugger and Yii Log provide useful analysis capabilities; return through previous stages and correct any issues until everything runs perfectly again.
Yii is an invaluable tool for creating Web 2.0 projects. As demonstrated here, setting up an efficient CRUD system only took minutes in Yii frameworks development services.
Yii makes setting up projects more manageable as its framework can be expanded on as needed by us without starting from scratch each time.
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