JSON to Ruby Converter

About JSON to Ruby Converter

Convert JSON data to Ruby code with support for hashes, arrays, OpenStruct, classes, and constants. Perfect for Ruby on Rails development, configuration files, and data migration.

Key Features

• Multiple Output Formats: Hash/Array, JSON.parse, OpenStruct, Constants, or Ruby Classes
• Symbol Keys: Choose between symbol keys (:key) or string keys ('key')
• Custom Variable Names: Specify your preferred variable or class name
• Configurable Indentation: Adjust indent size from 2 to 8 spaces
• Require Statements: Optional require 'json' or 'ostruct' statements
• Class Generation: Automatically generate Ruby classes with attr_accessor
• Proper Escaping: Handles special characters and quotes correctly
• Usage Examples: Includes helpful usage comments in output

How to Use

1. Input JSON Data: Paste your JSON data or upload a .json file
2. Configure Options: Choose output format, variable name, and symbol usage
3. Review Output: The Ruby code updates automatically
4. Copy or Download: Use the Copy or Download button to save your code
5. Use in Ruby: Include or execute the code in your Ruby application

Example Conversion

JSON Input:

{
  "name": "John Doe",
  "email": "john@example.com",
  "age": 28,
  "active": true
}

Ruby Output (Hash with Symbols):

data = {
  name: 'John Doe',
  email: 'john@example.com',
  age: 28,
  active: true
}

# Usage examples:
# puts data.inspect
# pp data
# puts data[:name]

Output Format Options

• Hash/Array: Native Ruby hash and array syntax with proper formatting
• JSON.parse: Uses JSON.parse to convert JSON string to Ruby object
• OpenStruct: Creates OpenStruct objects for dot notation access
• Constants: Converts object properties to Ruby constants
• Ruby Class: Generates a complete Ruby class with attributes and methods

Common Use Cases

• Rails Configuration: Convert JSON config to Ruby config files
• Data Migration: Import JSON data into Ruby applications
• API Integration: Convert API responses to Ruby data structures
• Database Seeding: Generate Ruby hashes for database seeders
• Testing: Create test fixtures from JSON data
• Model Generation: Generate Ruby model classes from JSON schemas

Ruby Syntax Features

• Symbol Keys: Modern Ruby style with symbol keys (key: value)
• Hash Rocket: Classic syntax with string keys ('key' => value)
• Proper Escaping: Single quotes with escaped special characters
• Nested Structures: Handles deeply nested hashes and arrays
• Type Preservation: Maintains booleans, numbers, and nil values

OpenStruct Benefits

• Dot Notation: Access properties with dot notation (data.name)
• Dynamic Attributes: Add new attributes on the fly
• Readable Code: More readable than hash bracket notation
• Perfect for Config: Ideal for configuration objects

Ruby Class Generation

The class format generates a complete Ruby class with:

• attr_accessor: Automatic getter and setter methods
• initialize: Constructor that accepts a hash of attributes
• to_h: Method to convert instance back to hash
• Instance Creation: Example code to create an instance

Best Practices

• Use Symbols: Modern Ruby code prefers symbol keys for hashes
• Consistent Indentation: Use 2 spaces for Ruby convention
• Descriptive Names: Use meaningful variable names like config or user_data
• OpenStruct for Config: Use OpenStruct for configuration objects
• Classes for Models: Generate classes for domain models
• Security: Validate and sanitize data before using in production

Ruby Version Compatibility

• Ruby 1.9+: Symbol key syntax (key: value) is supported
• Ruby 1.8: Use hash rocket syntax ('key' => value) for older versions
• Ruby 2.0+: All features fully supported with improved performance
• Ruby 3.0+: Latest syntax and optimizations available

Privacy & Security

All conversions happen locally in your browser. Your JSON data is never uploaded to any server, ensuring complete privacy and security.