class Goliath::Rack::Validation::NumericRange


use Goliath::Rack::Validation::NumericRange, {:key => ‘num’, :max => 10}
use Goliath::Rack::Validation::NumericRange, {:key => ‘num’, :min => 1}
use Goliath::Rack::Validation::NumericRange, {:key => ‘num’, :min => 1.2, :max => 3.5, :default => 2.9, :as => Float}
use Goliath::Rack::Validation::NumericRange, {:key => ‘num’, :min => 1, :max => 30, :default => 10}
@example
If no default the :min or :max values will be applied to the parameter.
falls outside the range, or is not provided the default will be used, if provided.
A middleware to validate that a parameter value is within a given range. If the value

def call(env) 

def call(env)
  if !env['params'].has_key?(@key) || env['params'][@key].nil?
    env['params'][@key] = value
  else
    if env['params'][@key].instance_of?(Array) then
      env['params'][@key] = env['params'][@key].first
    end
    env['params'][@key] = coerce(env['params'][@key])
    if (!@min.nil? && env['params'][@key] < @min) || (!@max.nil? && env['params'][@key] > @max)
      env['params'][@key] = value
    end
  end
  @app.call(env)
end

def coerce(val) 

def coerce(val)
  (@coerce_as == Float) ? val.to_f : val.to_i
end

def initialize(app, opts = {})

Returns:
  • (Goliath::Rack::Validation::NumericRange) - The validator

Options Hash: (**opts)
  • :default (Integer) -- The default to set if outside the range
  • :as (Class) -- How to convert: Float will use .to_f, Integer (the default) will use .to_i
  • :max (Integer) -- The maximum value
  • :min (Integer) -- The minimum value
  • :key (String) -- The key to look for in the parameters

Parameters:
  • opts (Hash) -- The options hash
  • app () -- The app object 
def initialize(app, opts = {})
  @app = app
  @key = opts[:key]
  raise Exception.new("NumericRange key required") if @key.nil?
  @min = opts[:min]
  @max = opts[:max]
  raise Exception.new("NumericRange requires :min or :max") if @min.nil? && @max.nil?
  @coerce_as = opts[:as]
  raise Exception.new("NumericRange requires :as to be Float or Integer (default)") unless [nil, Integer, Float].include?(@coerce_as)
  @default = opts[:default]
end

def value 

def value
  @default || @min || @max
end