class ActionController::Parameters

Constants

EMPTY_HASH

Public Instance Methods

moderate(controller_name, action, *filters) click to toggle source
# File lib/moderate_params/moderate_strong_params.rb, line 5
def moderate(controller_name, action, *filters)
  params = self.class.new

  filters.each do |filter|
    case filter
    when Symbol, String
      permitted_scalar_filter(params, filter)
    when Hash
      cust_hash_filter(params, filter, controller_name, action)
    end
  end

  unpermitted_parameters!(params)
  custom_logging(params, controller_name, action)
  permit!
end

Private Instance Methods

cust_hash_filter(params, filter, controller_name, action) click to toggle source
# File lib/moderate_params/moderate_strong_params.rb, line 39
 def cust_hash_filter(params, filter, controller_name, action)
  filter = filter.with_indifferent_access

  # Slicing filters out non-declared keys.
  slice(*filter.keys).each do |key, value|
    next unless value
    next unless has_key? key

    if filter[key] == EMPTY_ARRAY
      # Declaration { comment_ids: [] }.
      array_of_permitted_scalars?(self[key]) do |val|
        params[key] = val
      end
    elsif filter[key] == EMPTY_HASH
      # Declaration { preferences: {} }.
      if value.is_a?(Parameters)
        params[key] = permit_any_in_parameters(value)
      end
    elsif non_scalar?(value)
      # Declaration { user: :name } or { user: [:name, :age, { address: ... }] }.
      params[key] = each_element(value) do |element|
        element.instance_variable_set '@context', "Parent #{key}"
        element.moderate(controller_name, action, *Array.wrap(filter[key]))
      end
    end
  end
end
custom_logging(params, controller_name, action) click to toggle source
# File lib/moderate_params/moderate_strong_params.rb, line 24
def custom_logging(params, controller_name, action)
  unpermitted_keys(params).each do |k|
    ActiveSupport::Notifications.instrument('moderate_params') do |payload|
       payload[:controller] = controller_name
       payload[:action] = action
       payload[:message] = "#{@context || 'Top Level'} is missing: #{k}"
    end
  end
end
non_scalar?(value) click to toggle source
# File lib/moderate_params/moderate_strong_params.rb, line 34
def non_scalar?(value)
  value.is_a?(Array) || value.is_a?(Parameters)
end