Sha256: ad1fbaaf5bd0fe3742a709ebaf00ce995cef9e0427cc933a9dee75b2e45256d9
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Size: 1.4 KB
Versions: 7
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Stored size: 1.4 KB
Contents
require 'grape/middleware/base'
module Grape
module Middleware
module Versioner
# This middleware sets various version related rack environment variables
# based on the request parameters and removes that parameter from the
# request parameters for subsequent middleware and API.
# If the version substring does not match any potential initialized
# versions, a 404 error is thrown.
# If the version substring is not passed the version (highest mounted)
# version will be used.
#
# Example: For a uri path
# /resource?apiver=v1
#
# The following rack env variables are set and path is rewritten to
# '/resource':
#
# env['api.version'] => 'v1'
class Param < Base
def default_options
{
:parameter => "apiver"
}
end
def before
paramkey = options[:parameter]
potential_version = request.params[paramkey]
unless potential_version.nil?
if options[:versions] && ! options[:versions].find { |v| v.to_s == potential_version }
throw :error, :status => 404, :message => "404 API Version Not Found", :headers => {'X-Cascade' => 'pass'}
end
env['api.version'] = potential_version
env['rack.request.query_hash'].delete(paramkey)
end
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems