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Contents
module InheritedResources #:nodoc:
module PolymorphicHelpers #:nodoc:
protected
def parent_type
@parent_type
end
def parent_class
parent.class if @parent_type
end
def parent
instance_variable_get("@#{@parent_type}") if @parent_type
end
private
def parent?
if resources_configuration[:polymorphic][:optional]
parents_symbols.size > 1 || !@parent_type.nil?
else
true
end
end
# Maps parents_symbols to build association chain.
#
# If the parents_symbols find :polymorphic, it goes through the
# params keys to see which polymorphic parent matches the given params.
#
# When optional is given, it does not raise errors if the polymorphic
# params are missing.
#
def symbols_for_chain
polymorphic_config = resources_configuration[:polymorphic]
parents_symbols.map do |symbol|
if symbol == :polymorphic
params_keys = params.keys
key = polymorphic_config[:symbols].find do |poly|
params_keys.include? resources_configuration[poly][:param].to_s
end
if key.nil?
raise ScriptError, "Could not find param for polymorphic association.
The request params keys are #{params.keys.inspect}
and the polymorphic associations are
#{polymorphic_symbols.inspect}." unless polymorphic_config[:optional]
nil
else
@parent_type = key.to_sym
end
else
symbol
end
end.compact
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems