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Contents
# Base Module for ViewModels.
#
module ViewModels
# A simple path store. Designed to remove a bit of complexity from the base view model.
#
# Use it to install an instance in the metaclass.
#
class PathStore
attr_reader :view_model_class
def initialize view_model_class
@view_model_class = view_model_class
@name_path_mapping = {}
end
# Install in the metaclass (as an example).
#
def self.install_in klass
klass.path_store = PathStore.new klass
end
# Cache the result of the rendering.
#
def cached options, &block
prepare options.path_key
result = block.call
save options and result if result
end
# Prepare the key for the next storing procedure.
#
# Note: If this is nil, the store will not save the path.
#
def prepare key
@key = key
end
# Saves the options for the prepared key.
#
def save options
self[@key] = options.file
end
# Does not save values for nil keys.
#
def []= key, path
return if key.nil?
@name_path_mapping[key] ||= path
end
# Simple [] delegation.
#
def [] key
@name_path_mapping[key]
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems