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prop_initializer

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The prop_initializer gem is a flexible tool for defining properties on Ruby classes.

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# Prop Initializer

## Overview

The `prop_initializer` gem is a flexible tool for defining properties on Ruby classes.

![](https://raw.githubusercontent.com/avo-hq/prop_initializer/main/logo.png)

It's a fork of the [Literal Gem](https://github.com/joeldrapper/literal), with a few tweaks. We sincerely thank [Joel Drapper](https://github.com/joeldrapper) for the inspiration and base code that made this possible.

With `prop_initializer`, you can easily declare properties for any class, giving you flexible options for default values and more. However, the scope is narrowed down by removing strict typing requirements, providing a more lightweight and adaptable interface.

## Installation

To use `prop_initializer ` in your Ruby project, add the following to your Gemfile:

```ruby
gem "prop_initializer"
```

Then, run the bundle command to install it:

```bash
bundle install
```

## Usage

To start using `prop_initializer `, you need to include the module in the class where you want to define properties.

### Step 1: Extend the Properties Module

In any class, extend `PropInitializer::Properties` to enable the ability to define properties:

```ruby
class MyClass
  extend PropInitializer::Properties
end
```

### Step 2: Define Properties

Properties can be declared using the `prop` method, which generates writers and makes them available as instance variables (e.g., `@name`, `@size`, etc.).

#### Basic Syntax:

```ruby
prop :name                # A simple property, accessible via @name
prop :size, default: :md  # A property with a default value of :md
prop :args, kind: :*      # A property for handling splat arguments
prop :kwargs, kind: :**   # A property for handling keyword arguments
```

#### Custom Property with Block:

You can define a custom processing block when declaring a property, for example:

```ruby
prop :icon do |value|
  value&.to_sym       # Converts the property value to a symbol
end
```

### Step 3: Accessing Properties

By default, `PropInitializer` generates a writer for each declared property. The properties are stored as instance variables, which can be accessed within the class:

```ruby
@name    # Accesses the value of the 'name' property
@size    # Accesses the value of the 'size' property
```

#### Public Reader:

If you want to generate a public reader (getter) for a property, use the `reader: :public` option when defining the property:

```ruby
prop :title, reader: :public
```

This will automatically generate a public getter method, allowing you to retrieve the property like so:

```ruby
my_class_instance.title  # Public getter for the 'title' property
```

### Example:

```ruby
class MyComponent
  extend PropInitializer::Properties

prop :name, reader: :public
  prop :size, default: :md, reader: :public
  prop :args, kind: :*
  prop :kwargs, kind: :**
  prop :icon do |value|
    value&.to_sym
  end
end

component = MyComponent.new(name: "Button", size: :lg)
component.name # => "Button"
component.size # => :lg
```

## Key Differences from [Literal](https://github.com/joeldrapper/literal)

While `prop_initializer` is based on the [Literal Gem](https://github.com/joeldrapper/literal), there are some important differences:

- **No Type Requirement:** [Literal](https://github.com/joeldrapper/literal)'s properties system enforces types, while `prop_initializer` omits them for flexibility. You can define properties without needing to specify a type.

- **Simplified Initializer:** The initialization process has been modified to avoid requiring types at the time of property definition.

## Acknowledgements

Special thanks to the team at [Literal](https://github.com/joeldrapper/literal) for their pioneering work on property-based object initialization. This gem builds upon the foundation laid by their work.

If you're looking for a more type-strict approach to property initialization, we encourage you to check out the original [Literal Gem](https://github.com/joeldrapper/literal).

Thank you for using `prop_initializer`! We hope this tool helps make your property management more efficient and adaptable in your Ruby projects.

## Open Source

- [`active_storage-blurhash`](https://github.com/avo-hq/active_storage-blurhash) - A plug-n-play [blurhash](https://blurha.sh/) integration for images stored in ActiveStorage
 - [`avo`](https://github.com/avo-hq/avo) - Build Content management systems with Ruby on Rails
 - [`class_variants`](https://github.com/avo-hq/class_variants) - Easily configure styles and apply them as classes. Very useful when you're implementing Tailwind CSS components and call them with different states.
 - [`stimulus-confetti`](https://github.com/avo-hq/stimulus-confetti) - The easiest way to add confetti to your StimulusJS app

## Try Avo ⭐️

If you enjoyed this gem try out [Avo](https://github.com/avo-hq/avo). It helps developers build Internal Tools, Admin Panels, CMSes, CRMs, and any other type of Business Apps 10x faster on top of Ruby on Rails.

## License
The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).

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