lib/self_systeem/instance_variables_builder.rb
module SelfSysteem
class InstanceVariablesBuilder
include ActionView::Helpers::NumberHelper
attr_reader :controller, :relevant_instance_varaibles, :instance_variable_objects
def initialize(controller)
@controller = controller
end
def call
build_variables
self
end
def self.call(controller)
new(controller).call
end
private
def build_variables
@relevant_instance_varaibles = controller
.instance_variable_names.reject {|v| v[/@_/] || v == "@marked_for_same_origin_verification"}
@instance_variable_objects = {}
relevant_instance_varaibles.each do |v|
iv_val = controller.instance_variable_get(v)
if iv_val.class.name.match(/ActiveRecord::AssociationRelation|ActiveRecord::Associations::CollectionProxy/)
instance_variable_objects.merge!(v.to_s => { })
iv_val.each do |o|
instance_variable_objects[v.to_s].merge!(o.attributes.select {|k, v| k.to_s.match(/^id|_id/)})
end
elsif iv_val.respond_to?(:attributes)
instance_variable_objects.merge!({ v.to_s => iv_val.attributes.select {|k, v| k.to_s.match(/^id|_id/)} })
elsif iv_val.present? && iv_val.class.ancestors.select {|c| c.to_s.match(/ActiveModel|ActiveRecord/)}.present? && iv_val.is_a?(Symbol) != true
instance_variable_objects.merge!({ v.to_s => slice_hash(JSON.parse(iv_val.to_json), /^id|_id/) })
elsif iv_val.respond_to?(:instance_values)
instance_variable_objects.merge!({ v.to_s => iv_val.instance_values.select {|k, v| k.to_s.match(/^id|_id/)} })
else
instance_variable_objects.merge!({ v.to_s => iv_val.to_s })
end
end
end
def transform_hash(original, options={}, &block)
original.inject({}){|result, (key,value)|
value = if (options[:deep] && Hash === value)
transform_hash(value, options, &block)
else
value
end
block.call(result,key,value)
result
}
end
def slice_hash(hash, regex)
transform_hash(hash, :deep => true) {|hash, key, value|
hash[key] = value if (value.is_a?(Hash) || key.to_s.match(regex) )
}
end
end
end