Sha256: 1c7b1892c390a7a3ad7f71ed4e41097dedec72543064554ddc17e07212e75c32
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Contents
require 'goliath/rack/validator'
module Goliath
module Rack
module Validation
# Middleware to validate that a given parameter has a specified value.
#
# @example
# use Goliath::Rack::Validation::RequiredValue, {:key => 'mode', :values => %w(foo bar)}
# use Goliath::Rack::Validation::RequiredValue, {:key => 'baz', :values => 'awesome'}
#
class RequiredValue
include Goliath::Rack::Validator
attr_reader :key, :values
# Creates the Goliath::Rack::Validation::RequiredValue validator.
#
# @param app The app object
# @param opts [Hash] The options to create the validator with
# @option opts [String] :key The key to look for in params (default: id)
# @option opts [String | Array] :values The values to verify are in the params
# @return [Goliath::Rack::Validation::RequiredValue] The validator
def initialize(app, opts = {})
@app = app
@key = opts[:key] || 'id'
@values = [opts[:values]].flatten
end
def call(env)
return validation_error(400, "Provided #{@key} is invalid") unless value_valid?(env['params'])
@app.call(env)
end
def value_valid?(params)
if !params.has_key?(key) || params[key].nil? ||
(params[key].is_a?(String) && params[key] =~ /^\s*$/)
return false
end
if params[key].is_a?(Array)
return false if params[key].empty?
params[key].each { |k| return false unless values.include?(k) }
elsif !values.include?(params[key])
return false
end
true
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems