Class: FeideeUtils::Record::ModifiedRecord

Inherits:
Object
  • Object
show all
Defined in:
lib/feidee_utils/record/modified_record.rb

Overview

TODO: Reconsider this class and ship full support to all entities.

Direct Known Subclasses

Account::ModifiedAccount

Defined Under Namespace

Classes: ValuePair

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(poid, base, head) ⇒ ModifiedRecord

Returns a new instance of ModifiedRecord.



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# File 'lib/feidee_utils/record/modified_record.rb', line 9

def initialize(poid, base, head)
  raise "Base row doesn't have the given poid." if base.poid != poid
  raise "Head row doesn't have the given poid." if head.poid != poid
  @poid = poid
  @base = base
  @head = head
  @modified_fields = self.class.fields_diff(base.field, head.field)
end

Instance Attribute Details

#base ⇒ Object (readonly)

Returns the value of attribute base.



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# File 'lib/feidee_utils/record/modified_record.rb', line 6

def base
  @base
end

#head ⇒ Object (readonly)

Returns the value of attribute head.



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# File 'lib/feidee_utils/record/modified_record.rb', line 6

def head
  @head
end

#modified_fields ⇒ Object (readonly)

Returns the value of attribute modified_fields.



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# File 'lib/feidee_utils/record/modified_record.rb', line 7

def modified_fields
  @modified_fields
end

#poid ⇒ Object (readonly)

Returns the value of attribute poid.



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# File 'lib/feidee_utils/record/modified_record.rb', line 5

def poid
  @poid
end

Class Method Details

.define_custom_methods(fields) ⇒ Object 



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# File 'lib/feidee_utils/record/modified_record.rb', line 49

def self.define_custom_methods fields
  fields.each do |name|
    if !respond_to? name
      define_method name do
        ValuePair.new((base.send name), (head.send name))
      end
      define_method (name.to_s + "_changed?").to_sym do
        (base.send name) != (head.send name)
      end
    end
  end
end

.define_default_methods(field_mappings) ⇒ Object 



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# File 'lib/feidee_utils/record/modified_record.rb', line 62

def self.define_default_methods field_mappings
  field_mappings.each do |name, key|
    if !respond_to? name
      define_method name do
        modified_fields[key]
      end
      define_method (name.to_s + "_changed?").to_sym do
        modified_fields.has_key? key
      end
    end
  end
end

.fields_diff(base, head) ⇒ Object 



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# File 'lib/feidee_utils/record/modified_record.rb', line 26

def self.fields_diff base, head
  (base.keys.sort | head.keys.sort).inject({}) do |hash, key|
    if base[key] != head[key]
      hash[key] = ValuePair.new(base[key], head[key])
    end
    hash
  end
end

Instance Method Details

#changed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/feidee_utils/record/modified_record.rb', line 39

def changed?
  methods.inject(false) do |acc, name|
    if name.to_s.end_with? "_changed?"
      acc ||= send name
    end
    acc
  end
end

#touched? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/feidee_utils/record/modified_record.rb', line 35

def touched?
  !modified_fields.empty?
end