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Example code of italix/contracts

Informations about the package contracts

Italix Contracts

PHP Version

Shared interfaces and foundational classes for Italix libraries, enabling seamless integration between italix/orm, italix/forms, and other compatible libraries.

Installation

Purpose

This package provides the common contracts and building blocks that allow different Italix libraries to work together without tight coupling:

Contents

Interfaces

Interface Description
TableMeta Describes a table/entity with its columns
ColumnMeta Describes a column/field with its type and constraints
RelationMeta Describes a foreign key relationship
RelationalColumnMeta A column that may have FK relations (extends ColumnMeta)
PolymorphicColumnMeta A polymorphic FK column (extends ColumnMeta)
DelegatedTableMeta A table using delegated types pattern (extends TableMeta)

Classes

Class Description
DataContainer Lightweight array-backed data container with array access, iteration, and JSON support

DataContainer

A general-purpose data container that wraps an associative array and provides both array syntax ($c['key']) and a clean method-based API.

Implements ArrayAccess, Countable, IteratorAggregate, and JsonSerializable.

Quick Start

Getting Values

Extracting Data

Modifying Data

Iteration, Counting, and JSON

Extending DataContainer

DataContainer is designed to be extended. The $data property is protected, so subclasses can access it directly:

snake_case Convention

All Italix public methods use snake_case. The methods required by PHP's built-in interfaces (offsetGet, jsonSerialize, getIterator) are implemented as required, with snake_case aliases provided:

PHP interface method snake_case alias
jsonSerialize() json_serialize()
getIterator() get_iterator()

The ArrayAccess methods (offsetGet, offsetSet, offsetExists, offsetUnset) don't need aliases because they are called implicitly via array syntax ($c['key']), not directly. Use get(), set(), has(), and remove() instead.

Complete API Reference

Method Returns Description
__construct(array $data = []) Create with optional initial data
get($key, $default = null) mixed Get value by key, with default
set($key, $value) self Set a value (chainable)
has($key) bool Key exists and is not null
has_key($key) bool Key exists, even if null
remove($key) self Remove a key (chainable)
merge(array $data) self Merge in new data (chainable)
to_array() array Get all data as plain array
only(array $keys) array Get subset of keys
except(array $keys) array Get all data except specified keys
keys() array Get all keys
values() array Get all values
is_empty() bool Check if container has no data
clear() self Remove all data (chainable)
count() int Number of entries (also works with count())
json_serialize() array Get data for JSON encoding
get_iterator() Traversable Get iterator for foreach

Interfaces

Implementing TableMeta

Implementing ColumnMeta

Using with italix/forms

Hierarchy

Requirements

License

Apache-2.0

All versions of contracts with dependencies

PHP Build Version
Package Version
Requires php Version >=7.4
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