Class: Fiona7::AttributeReaders::Factory

Inherits:
Object
  • Object
show all
Defined in:
lib/fiona7/attribute_readers/factory.rb

Instance Method Summary collapse

Constructor Details

#initialize(obj, type_def, widget_resolver) ⇒ Factory

Returns a new instance of Factory.



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# File 'lib/fiona7/attribute_readers/factory.rb', line 21

def initialize(obj, type_def, widget_resolver)
  self.obj             = obj
  self.type_def        = type_def
  self.widget_resolver = widget_resolver
end

Instance Method Details

#call(attribute, virtual_type, real_type) ⇒ Object 



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# File 'lib/fiona7/attribute_readers/factory.rb', line 27

def call(attribute, virtual_type, real_type)
  virtual = virtual_type.to_sym
  real    = real_type.to_sym

  worker = case [virtual, real]
           when [:linklist, :linklist]
             Fiona7::AttributeReaders::LinklistAsLinklist
           when [:link, :linklist]
             Fiona7::AttributeReaders::LinkAsLinklist
           when [:reference, :linklist]
             Fiona7::AttributeReaders::ReferenceAsLinklist
           when [:reference, :string], [:reference, :text]
             Fiona7::AttributeReaders::ReferenceAsString
           when [:referencelist, :linklist]
             Fiona7::AttributeReaders::ReferencelistAsLinklist
           when [:referencelist, :text], [:referencelist, :string]
             Fiona7::AttributeReaders::ReferencelistAsText
           when [:widgetlist, :linklist]
             Fiona7::AttributeReaders::WidgetlistAsLinklist
           when [:multienum, :text], [:multienum, :string]
             Fiona7::AttributeReaders::MultienumAsText
           when [:multienum, :multienum]
             Fiona7::AttributeReaders::MultienumAsMultienum
           when [:number, :string], [:number, :text]
             Fiona7::AttributeReaders::NumberAsString
           when [:integer, :string], [:integer, :text]
             Fiona7::AttributeReaders::NumberAsString
           when [:float, :string], [:float, :text]
             Fiona7::AttributeReaders::NumberAsString
           when [:html, :html]
             Fiona7::AttributeReaders::HtmlAsHtml
           when [:binary, :linklist]
             Fiona7::AttributeReaders::BinaryAsLinklist
           when [:binary, :binary]
             Fiona7::AttributeReaders::BinaryAsBinary
           when [:stringlist, :text], [:stringlist, :string]
             Fiona7::AttributeReaders::StringlistAsText
           when [:stringlist, :multienum]
             Fiona7::AttributeReaders::Simple
           when [:stringlist, :stringlist]
             # NOTE: this is practically only used for "channels"
             Fiona7::AttributeReaders::Simple
           else
             case virtual
             when :text, :string, :enum, :markdown
               Fiona7::AttributeReaders::Simple
             when :date
               Fiona7::AttributeReaders::DateAsDate
             else
               # It would perhaps be practical to raise this error here
               # but also risky: broken configurations may surface
               # (attributes which had their attribute types changed).
               # This would break some pages
               #
               # raise(Fiona7::TypeSystemError.new("Unable to read #{attribute} in #{self.type_def.name} with typing #{virtual}:#{real}"))
               #
               # So instead, it is better to "lose" some information.
               return nil
             end
           end

  worker.new(self.obj, attribute, self.widget_resolver)
end