Class: Validate::BlockParsingContext

Inherits:
Object
  • Object
show all
Defined in:
lib/validate/parser.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ BlockParsingContext

Returns a new instance of BlockParsingContext.



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# File 'lib/validate/parser.rb', line 37

def initialize
  @allow_keys = :any
  @validations = []
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object

Raises:

  • (NoMethodError) 


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# File 'lib/validate/parser.rb', line 48

def method_missing(method, *args, &block)
  raise NoMethodError.new("No method #{method} to call in the context of a validation block.") unless method.to_s =~ /^validates/
  raise NoMethodError.new("Undefined validation method: #{method}...") unless ValidationMethods.new.respond_to?(method)
  opts = args.pop if args.last.is_a?(::Hash)
  children = if block
    Parser.parse(&block)
  end
  @validations << {
    name: method,
    fields: args,
    opts: opts,
    validations: children
  }
end

Instance Method Details

#allow_keys(keys) ⇒ Object

‘allow_keys` is another special case, which can be used like this:

allow_keys :any
allow_keys :valid
allow_keys %w(one two three)

Defaults to :any, if not specified.



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# File 'lib/validate/parser.rb', line 87

def allow_keys(keys)
  @allow_keys = keys
end

#run_when(condition, &block) ⇒ Object

‘when` is a special case, its syntax is as follows:

run_when -> { ... } do
  # validations go here
end



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# File 'lib/validate/parser.rb', line 69

def run_when(condition, &block)
  validations = Parser.parse(&block).validations
  validations.map do |v|
    v[:opts] ||= {}
    v[:opts][:when] = condition
    v
  end
  @validations += validations
end

#validations ⇒ Object

Returns a CompiledValidations struct.



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# File 'lib/validate/parser.rb', line 44

def validations
  CompiledValidations.new(@validations, @allow_keys)
end