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Versions: 144
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Contents
module Scrivito
class Comparison < Struct.new(:revision, :inverse, :diff_mode)
alias :inverse? :inverse
def active?
!!revision
end
def modification(content)
return nil unless revision
convert_modification(content.modification(revision))
end
def modification_for_attribute(content, field_name)
return nil unless revision
convert_modification(
content.modification_for_attribute(field_name, revision)
)
end
def diff_for(content, field_name)
return nil unless revision
current_value = content[field_name]
compare_value = value_of(content, field_name)
return nil if current_value == compare_value
field_type = content.type_of_attribute(field_name)
if inverse?
old, new = current_value, compare_value
else
old, new = compare_value, current_value
end
Scrivito::Diff.for(diff_mode, field_type, old, new)
end
private
def value_of(content, field_name)
compare_content = content.in_revision(revision)
compare_content && compare_content[field_name]
end
def convert_modification(modification)
if inverse?
case modification
when Modification::NEW
Modification::DELETED
when Modification::DELETED
Modification::NEW
else
modification
end
else
modification
end
end
end
end
Version data entries
144 entries across 144 versions & 1 rubygems