24 lines
794 B
Ruby
24 lines
794 B
Ruby
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# frozen_string_literal: true
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module SafeFormatHelper
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# Returns a HTML-safe string where +format+ and +args+ are escaped via
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# `html_escape` if they are not marked as HTML-safe.
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#
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# Argument +format+ must not be marked as HTML-safe via `.html_safe`.
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#
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# Example:
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# safe_format('Some %{open}bold%{close} text.', open: '<strong>'.html_safe, close: '</strong>'.html_safe)
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# # => 'Some <strong>bold</strong>'
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# safe_format('See %{user_input}', user_input: '<b>bold</b>')
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# # => 'See <b>bold</b>
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#
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def safe_format(format, **args)
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raise ArgumentError, 'Argument `format` must not be marked as html_safe!' if format.html_safe?
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format(
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html_escape(format),
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args.transform_values { |value| html_escape(value) }
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).html_safe
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end
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end
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