38 lines
1.5 KiB
Ruby
38 lines
1.5 KiB
Ruby
module ConsistencyValidations
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extend ActiveSupport::Concern
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# Generic checks that are run for the updates and deletes of
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# node, ways and relations. This code is here to avoid duplication,
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# and allow the extension of the checks without having to modify the
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# code in 6 places for all the updates and deletes.
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# This will throw an exception if there is an inconsistency
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def check_update_element_consistency(old, new, user)
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if new.id != old.id || new.id.nil? || old.id.nil?
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raise OSM::APIPreconditionFailedError, "New and old IDs don't match on #{new.class}. #{new.id} != #{old.id}."
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elsif new.version != old.version
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raise OSM::APIVersionMismatchError.new(new.id, new.class.to_s, new.version, old.version)
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end
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check_changeset_consistency(new.changeset, user)
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end
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# This is similar to above, just some validations don't apply
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def check_create_element_consistency(new, user)
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check_changeset_consistency(new.changeset, user)
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end
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##
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# subset of consistency checks which should be applied to almost
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# all the changeset controller's writable methods.
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def check_changeset_consistency(changeset, user)
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# check user credentials - only the user who opened a changeset
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# may alter it.
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if changeset.nil?
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raise OSM::APIChangesetMissingError
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elsif user.id != changeset.user_id
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raise OSM::APIUserChangesetMismatchError
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elsif !changeset.open?
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raise OSM::APIChangesetAlreadyClosedError, changeset
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end
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end
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end
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