Class: Decidim::BaseDiffRenderer

Inherits:
Object
  • Object
show all
Includes:
TranslatableAttributes
Defined in:
app/services/decidim/base_diff_renderer.rb

Overview

This class holds common logic for diffing resources. It is supposed to be a base class for all other diff renderers, as it defines some helpful methods that later diff renderers can use.

Instance Method Summary collapse

Methods included from TranslatableAttributes

#default_locale?

Constructor Details

#initialize(version) ⇒ BaseDiffRenderer

Returns a new instance of BaseDiffRenderer.



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# File 'app/services/decidim/base_diff_renderer.rb', line 10

def initialize(version)
  @version = version
end

Instance Method Details

#diff ⇒ Object

Renders the diff of the given changeset. Takes into account translatable fields.

Returns a Hash, where keys are the fields that have changed and values are an array, the first element being the previous value and the last being the new one.



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# File 'app/services/decidim/base_diff_renderer.rb', line 18

def diff
  version.changeset.inject({}) do |diff, (attribute, values)|
    attribute = attribute.to_sym
    type = attribute_types[attribute]

    if type.blank?
      diff
    else
      parse_changeset(attribute, values, type, diff)
    end
  end
end