Class: LcpRuby::JsonItemWrapper

Inherits:
Object
  • Object
show all
Includes:
ActiveModel::Model
Defined in:
lib/lcp_ruby/json_item_wrapper.rb

Overview

Wraps a plain hash (one item from a JSON column array) with ActiveModel::Model so it can participate in validations and provide typed getter/setter access based on a ModelDefinition.

Usage:

wrapper = JsonItemWrapper.new({"name" => "Alice"}, model_def)
wrapper.name        # => "Alice"
wrapper.name = "Bob"
wrapper.valid?       # runs model_def validations
wrapper.to_hash      # => {"name" => "Bob"}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = {}, model_definition = nil) ⇒ JsonItemWrapper

Returns a new instance of JsonItemWrapper.



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# File 'lib/lcp_ruby/json_item_wrapper.rb', line 17

def initialize(data = {}, model_definition = nil)
  @data = (data || {}).transform_keys(&:to_s)
  @model_definition = model_definition
  apply_defaults! if model_definition
  define_accessors! if model_definition
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args) ⇒ Object 



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# File 'lib/lcp_ruby/json_item_wrapper.rb', line 34

def method_missing(method_name, *args)
  name = method_name.to_s
  if name.end_with?("=")
    @data[name.chomp("=")] = args.first
  elsif @data.key?(name)
    @data[name]
  else
    super
  end
end

Instance Attribute Details

#model_definition ⇒ Object (readonly)

Returns the value of attribute model_definition.



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# File 'lib/lcp_ruby/json_item_wrapper.rb', line 15

def model_definition
  @model_definition
end

Instance Method Details

#respond_to_missing?(method_name, include_private = false) ⇒ Boolean

Dynamic field access — falls back to hash lookup

Returns:

  • (Boolean) 


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# File 'lib/lcp_ruby/json_item_wrapper.rb', line 25

def respond_to_missing?(method_name, include_private = false)
  name = method_name.to_s
  if name.end_with?("=")
    true
  else
    @data.key?(name) || super
  end
end

#to_hash ⇒ Object Also known as: to_h

Convert back to a plain hash for JSON persistence



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# File 'lib/lcp_ruby/json_item_wrapper.rb', line 46

def to_hash
  @data.dup
end

#validate_with_model_rules! ⇒ Object

Apply validations from the model definition using ActiveModel’s validation framework. This mirrors how ValidationApplicator works for AR models, ensuring consistent semantics (error messages, options). Returns true if no errors, false otherwise.



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# File 'lib/lcp_ruby/json_item_wrapper.rb', line 55

def validate_with_model_rules!
  return true unless model_definition

  apply_dynamic_validations!
  valid?
end