class PaperTrail::Queries::Versions::WhereObjectChangesFrom

For public API documentation, see ‘where_object_changes_from` in `paper_trail/version_concern.rb`. @api private

Public Class Methods

new(version_model_class, attributes) click to toggle source
  • version_model_class - The class that VersionConcern was mixed into.

  • attributes - A ‘Hash` of attributes and values. See the public API documentation for details.

@api private

# File lib/paper_trail/queries/versions/where_object_changes_from.rb, line 14
def initialize(version_model_class, attributes)
  @version_model_class = version_model_class
  @attributes = attributes
end

Public Instance Methods

execute() click to toggle source

@api private

# File lib/paper_trail/queries/versions/where_object_changes_from.rb, line 20
def execute
  if PaperTrail.config.object_changes_adapter.respond_to?(:where_object_changes_from)
    return PaperTrail.config.object_changes_adapter.where_object_changes_from(
      @version_model_class, @attributes
    )
  end
  column_type = @version_model_class.columns_hash["object_changes"].type
  case column_type
  when :jsonb, :json
    json
  else
    raise UnsupportedColumnType.new(
      method: "where_object_changes_from",
      expected: "json or jsonb",
      actual: column_type
    )
  end
end

Private Instance Methods

json() click to toggle source

@api private

# File lib/paper_trail/queries/versions/where_object_changes_from.rb, line 42
def json
  predicates = []
  values = []
  @attributes.each do |field, value|
    predicates.push(
      "(object_changes->>? ILIKE ?)"
    )
    values.concat([field, "[#{value.to_json},%"])
  end
  sql = predicates.join(" and ")
  @version_model_class.where(sql, *values)
end