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class Roda
module RodaPlugins
# The match_affix plugin allows changing the default prefix and suffix used for
# match patterns. Roda's default behavior for a match pattern like <tt>"albums"</tt>
# is to use the pattern <tt>/\A\/(?:albums)(?=\/|\z)/</tt>. This prefixes the pattern
# with +/+ and suffixes it with <tt>(?=\/|\z)</tt>. With the match_affix plugin, you
# can change the prefix and suffix to use. So if you want to be explicit and require
# a leading +/+ in patterns, you can set the prefix to <tt>""</tt>. If you want to
# consume a trailing slash instead of leaving it, you can set the suffix to <tt>(\/|\z)</tt>.
#
# You set the prefix and suffix to use by passing arguments when loading the plugin:
#
# plugin :match_affix, ""
#
# will load the plugin and use an empty prefix.
#
# plugin :match_affix, "", /(\/|\z)/
#
# will use an empty prefix and change the suffix to consume a trailing slash.
#
# plugin :match_affix, nil, /(\/|\z)/
#
# will not modify the prefix and will change the suffix to consume a trailing slash.
module MatchAffix
PREFIX = "/".freeze
SUFFIX = "(?=\/|\z)".freeze
# Set the default prefix and suffix to use in match patterns, if a non-nil value
# is given.
def self.configure(app, prefix, suffix=nil)
app.opts[:match_prefix] = prefix if prefix
app.opts[:match_suffix] = suffix if suffix
end
module RequestClassMethods
private
# Use the match prefix and suffix provided when loading the plugin, or fallback
# to Roda's default prefix/suffix if one was not provided.
def consume_pattern(pattern)
/\A#{roda_class.opts[:match_prefix] || PREFIX}(?:#{pattern})#{roda_class.opts[:match_suffix] || SUFFIX}/
end
end
end
register_plugin(:match_affix, MatchAffix)
end
end
Version data entries
13 entries across 13 versions & 1 rubygems