Class: Magnetic::Interface

Inherits:
Object show all
Includes:
Field::DSL
Defined in:
lib/magnetic/interface.rb

Defined Under Namespace

Modules: DSL

Instance Method Summary collapse

Methods included from Field::DSL

#field, #field_for, #fieldset, included

Constructor Details

#initialize(options = {}, &block) ⇒ Interface

Returns a new instance of Interface.



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# File 'lib/magnetic/interface.rb', line 11

def initialize options = {}, &block
  options.to_options!
  records = options[:records]
  controller = options[:controller]
  @records = (( Array === records and ActiveRecord::Base === records[0] )) ? records : [records]
  @records = [] if records.nil?
  @controller = controller
  @mapping = []
  instance_eval &block if block
  post_initialize
end

Instance Method Details

#map(mapping) ⇒ Object 



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# File 'lib/magnetic/interface.rb', line 23

def map mapping
  mapping.each do |key, value|
    key = key.to_s
    raise ArgumentError, 'empty key!' if key.empty?
    raise ArgumentError, 'no value!' if value.nil?
    @mapping << [key, value]
    if Magnetic::Field::Base === value
      field(value) unless field(value.name)
    end
  end
end

#map! ⇒ Object 



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# File 'lib/magnetic/interface.rb', line 39

def map!
  @records.each{|record| map_record :record => record, :mapping => @mapping} unless @mapping.empty?
end

#map_record(options = {}) ⇒ Object 



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# File 'lib/magnetic/interface.rb', line 43

def map_record options = {} 
  options.to_options!

  record = options.delete :record
  mapping = options.delete :mapping
  route = options.delete :route

  table_name = record.class.table_name
  id = record.id

  (( route ||= [] )) << "#{ table_name }[#{ id }]"

  mapping.each do |path, block|
    head, *tail = path.split '.'
    m, head, array, *ignored = %r/^(.*?)(\[\*?\])?$/o.match(head).to_a
    
    if array 
      subrecords = record.send head 
      subrecords = [subrecords] unless subrecords.class == Array
      subpath = tail.join '.'
      subblock = block
      submapping = [[ subpath, subblock ]]
      subrecords.each do |subrecord|
        subroute = route.clone 
        map_record :record => subrecord, :mapping => submapping, :route => subroute
      end
    else
      value = record.send head
      path = Magnetic.path(( [route, head].join('.') ))
      block.to_proc.call :path => path,
                         :value => value,
                         :model => record.class,
                         :table_name => table_name,
                         :column_name => head,
                         :record => record,
                         :interface => self,
                         :controller => @controller
    end
  end
end

#post_initialize ⇒ Object 



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# File 'lib/magnetic/interface.rb', line 35

def post_initialize
  map!
end