Class: Datev::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/datev/base.rb

Direct Known Subclasses

Account, Booking, Header

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes) ⇒ Base

Returns a new instance of Base.

Raises:

  • (ArgumentError) 


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# File 'lib/datev/base.rb', line 28

def initialize(attributes)
  raise ArgumentError.new('Hash required') unless attributes.is_a?(Hash)

  @attributes = self.class.default_attributes || {}

  # Check existing names and set value (if valid)
  attributes.each_pair do |name,value|
    unless field = self.class.field_by_name(name)
      raise ArgumentError.new("Field '#{name}' not found")
    end

    field.validate!(value)
    @attributes[name] = value
  end

  # Check for missing values
  self.class.fields.select(&:required?).each do |field|
    if @attributes[field.name].nil?
      raise ArgumentError.new("Value for field '#{field.name}' is required but missing")
    end
  end
end

Class Attribute Details

.default_attributes ⇒ Object

Returns the value of attribute default_attributes.



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# File 'lib/datev/base.rb', line 4

def default_attributes
  @default_attributes
end

.fields ⇒ Object

Returns the value of attribute fields.



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# File 'lib/datev/base.rb', line 4

def fields
  @fields
end

Class Method Details

.field(name, type, options = {}, &block) ⇒ Object 



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# File 'lib/datev/base.rb', line 12

def self.field(name, type, options={}, &block)
  self.fields ||= []

  # Check if there is already a field with the same name
  if field_by_name(name)
    raise ArgumentError.new("Field '#{name}' already exists")
  end

  field_class = const_get("Datev::#{type.to_s.capitalize}Field")
  self.fields << field_class.new(name, options, &block)
end

.field_by_name(name) ⇒ Object 



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# File 'lib/datev/base.rb', line 24

def self.field_by_name(name)
  self.fields.find { |f| f.name == name }
end

.inherited(subclass) ⇒ Object 



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# File 'lib/datev/base.rb', line 6

def inherited(subclass)
  subclass.fields             = self.fields
  subclass.default_attributes = self.default_attributes
end

Instance Method Details

#[](name) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/datev/base.rb', line 51

def [](name)
  field = self.class.field_by_name(name)
  raise ArgumentError.new("Field '#{name}' not found") unless field

  @attributes[field.name]
end

#output(context = nil) ⇒ Object 



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# File 'lib/datev/base.rb', line 58

def output(context=nil)
  self.class.fields.map do |field|
    value = @attributes[field.name]
    field.output(value, context)
  end
end