class Grape::Middleware::Base
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Public Class Methods
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# File lib/grape/middleware/base.rb, line 12 def initialize(app, **options) @app = app @options = merge_default_options(options) @app_response = nil end
@param [Rack Application] app The standard argument for a Rack middleware. @param [Hash] options A hash of options, simply stored for use by subclasses.
Public Instance Methods
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# File lib/grape/middleware/base.rb, line 48 def after; end
@abstract Called after the application is called in the middleware lifecycle. @return [Response, nil] a Rack SPEC response or nil to call the application afterwards.
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# File lib/grape/middleware/base.rb, line 43 def before; end
@abstract Called before the application is called in the middleware lifecycle.
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# File lib/grape/middleware/base.rb, line 18 def call(env) dup.call!(env).to_a end
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# File lib/grape/middleware/base.rb, line 22 def call!(env) @env = env before begin @app_response = @app.call(@env) ensure begin after_response = after rescue StandardError => e warn "caught error of type #{e.class} in after callback inside #{self.class.name} : #{e.message}" raise e end end response = after_response || @app_response merge_headers response response end
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# File lib/grape/middleware/base.rb, line 76 def content_type content_type_for(env[Grape::Env::API_FORMAT] || options[:format]) || 'text/html' end
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# File lib/grape/middleware/base.rb, line 72 def content_type_for(format) content_types_indifferent_access[format] end
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# File lib/grape/middleware/base.rb, line 64 def content_types @content_types ||= Grape::ContentTypes.content_types_for(options[:content_types]) end
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# File lib/grape/middleware/base.rb, line 54 def context env[Grape::Env::API_ENDPOINT] end
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# File lib/grape/middleware/base.rb, line 68 def mime_types @mime_types ||= Grape::ContentTypes.mime_types_for(content_types) end
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# File lib/grape/middleware/base.rb, line 80 def query_params rack_request.GET rescue Rack::QueryParser::ParamsTooDeepError raise Grape::Exceptions::TooDeepParameters.new(Rack::Utils.param_depth_limit) rescue Rack::Utils::ParameterTypeError raise Grape::Exceptions::ConflictingTypes end
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# File lib/grape/middleware/base.rb, line 50 def rack_request @rack_request ||= Rack::Request.new(env) end
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# File lib/grape/middleware/base.rb, line 58 def response return @app_response if @app_response.is_a?(Rack::Response) @app_response = Rack::Response[*@app_response] end
Private Instance Methods
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# File lib/grape/middleware/base.rb, line 99 def content_types_indifferent_access @content_types_indifferent_access ||= content_types.with_indifferent_access end
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# File lib/grape/middleware/base.rb, line 103 def merge_default_options(options) if respond_to?(:default_options) default_options.deep_merge(options) elsif self.class.const_defined?(:DEFAULT_OPTIONS) self.class::DEFAULT_OPTIONS.deep_merge(options) else options end end
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# File lib/grape/middleware/base.rb, line 90 def merge_headers(response) return unless headers.is_a?(Hash) case response when Rack::Response then response.headers.merge!(headers) when Array then response[1].merge!(headers) end end