Class: AttributeUtils

Inherits:
Object
  • Object
show all
Defined in:
lib/raw/util/attr.rb

Overview

– TODO: find a better name! TODO: this is nitro request specific, should probably get moved into the Nitro directory. ++

Class Method Summary collapse

Class Method Details

.populate_object(obj, values, options = {}) ⇒ Object

Populate an object from a hash of values. This is a truly dangerous method.

Options

  • name

  • force_boolean



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# File 'lib/raw/util/attr.rb', line 31

def populate_object(obj, values, options = {})
  options = {
    :force_boolean => true
  }.update(options)
  
  # If a class is passed create an instance.

  obj = obj.new if obj.is_a?(Class) 

  for sym in obj.class.serializable_attributes
    anno = obj.class.ann(sym)
    
    unless options[:all]
      # THINK: should skip control none attributes?
      next if sym == obj.class.primary_key or anno[:control] == :none or anno[:disable_control]
    end
    
    prop_name = sym.to_s

    # See if there is an incoming request param for this prop.
    
    if values.keys.include? prop_name

      prop_value = values[prop_name]
      
      # to_s must be called on the prop_value incase the 
      # request is IOString.
      
      prop_value = prop_value.to_s unless prop_value.is_a?(Hash) or prop_value.is_a?(Array)
      
      # If property is a Blob dont overwrite current 
      # property's data if "".
      
      break if anno[:class] == Og::Blob and prop_value.empty?

      prop_value = CGI.unescape(prop_value)
      
      if anno[:class] == String and anno[:unfiltered] != true
        # html filter all strings by default.
        prop_value = prop_value.html_filter
      end 

      set_attr(obj, prop_name, CGI.unescape(prop_value))
      
    elsif options[:force_boolean] and (anno[:class] == TrueClass or anno[:class] == FalseClass)
      # Set a boolean property to false if it is not in the 
      # request. Requires force_boolean == true.

      set_attr(obj, prop_name, false)
      obj.send("__force_#{prop_name}", false)
    end
  end

  if options[:assign_relations]
    for rel in obj.class.relations
      unless options[:all]
        next if rel.options[:control] == :none or rel.options[:disable_control]
      end
      
      rel_name = rel.name.to_s
      
      # Renew the relations from values
      
      if rel.kind_of?(Og::RefersTo)
        if foreign_oid = values[rel_name]
          foreign_oid = foreign_oid.to_s unless foreign_oid.is_a?(Hash) or foreign_oid.is_a?(Array) 
          foreign_oid = nil if foreign_oid == 'nil' or foreign_oid == 'none'
        end
        set_attr(obj, rel.foreign_key, foreign_oid)
      elsif rel.kind_of?(Og::JoinsMany) || rel.kind_of?(Og::HasMany)
        collection = obj.send(rel_name)
        collection.remove_all 
        if values.has_key?(rel_name)
          primary_keys = values[rel_name]
          primary_keys.each do |v|
            v = v.to_s
            next if v == "nil" or v == "none"
            collection << rel.target_class[v.to_i]
          end
        end
      end
    end
  end

  #--
  # gmosx, FIXME: this is a hack, will be replaced with proper
  # code soon.
  #++
  
  for callback in obj.class.assign_callbacks
    callback.call(obj, values, options)
  end if obj.class.respond_to?(:assign_callbacks)

  return obj
end

.set_attr(obj, name, value) ⇒ Object

– TODO: Add preprocessing. ++



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# File 'lib/raw/util/attr.rb', line 17

def set_attr(obj, name, value)
  obj.send("__force_#{name}", value)
rescue Object => ex
  obj.instance_variable_set("@#{name}", value)
end