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Informations about the package aurora-db

Luma | Aurora DB

Version 2.7.3 PHP Coverage 89.67% License GPL--3.0--or--later

The small but mighty PHP database component.

Installation

Usage

In your applications entrypoint, connect to your database:

In its simplest form, we can use the above DatabaseConnection instance to get the PDO database connection:

This allows you to use Aurora models to interact with your database via a single shared connection.

The Aurora Model

Create Database Tables

An Aurora model is an entity that is specifically designed to interact with a corresponding database table. One instance of an Aurora model relates to one row in its corresponding database table.

Take the following tables:

Create Aurora Classes

We can create the following Aurora models which will allow us to create, retrieve, update and delete records within these tables.

All Aurora models have a getId() method which returns the value of the property with the #[Identifier] attribute. Identifiers must be protected and are required as part of a valid Aurora model. All other properties which you also wish to map to a database column should use the #[Column($name)] attribute.

Nullable Columns

If your database table contains any nullable columns it is important to ensure that the associated property has been type hinted as nullable:

OneToMany Relationships

For handling one-to-many relationships, for example fetching all Article models created by a User, we can add a property to hold our articles (on the User model):

It's as simple as that, now calling getArticles() from a User instance will return a Collection containing all the articles written by that user.

Table & Schema

By default, the table name associated with your Aurora class will be the same name as your class - so User and Article in this case. In addition, no schema will be set for your class - output queries will look something like this SELECT * FROM User ....

You may wish to specify a schema and table name:

This would create/run queries that look something like this SELECT * FROM Core.User ....

CRUD Methods

Let's add some new records to the tables we created:

And we can retrieve them:

The save() method can also be used to update existing records:

And we can also delete existing records:

Pagination

Aurora also allows you to paginate your data:

Query Builder

The Aurora model includes a handy query builder. Some important notes:

In order to execute any query builder statement and retrieve the results, you must call the get method.

All query builder results are returned with the specified columns as well as their primary identifier, so this does not need to be specified.

There are 3 possible return types following a get() call:

  • When one result is returned, this returns as an instance of the calling class.
  • When more than one result is returned, this returns an array containing instances of the calling class.
  • When zero results are returned, NULL is returned by the query builder.

Here are some of the methods that you can use:

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