lib/jira/has_many_proxy.rb
#
# Whenever a collection from a has_many relationship is accessed, an instance
# of this class is returned. This instance wraps the Array of instances in
# the collection with an extra build method, which allows new instances to be
# built on the collection with the correct properties.
#
# In practice, instances of this class behave exactly like an Array.
#
class JIRA::HasManyProxy
attr_reader :target_class, :parent
attr_accessor :collection
def initialize(parent, target_class, collection = [])
@parent = parent
@target_class = target_class
@collection = collection
end
# Builds an instance of this class with the correct parent.
# For example, issue.comments.build(attrs) will initialize a
# comment as follows:
#
# JIRA::Resource::Comment.new(issue.client,
# :attrs => attrs,
# :issue => issue)
def build(attrs = {})
resource = target_class.new(parent.client, :attrs => attrs, parent.to_sym => parent)
collection << resource
resource
end
# Forces an HTTP request to fetch all instances of the target class that
# are associated with the parent
def all
target_class.all(parent.client, parent.to_sym => parent)
end
# Delegate any missing methods to the collection that this proxy wraps
def method_missing(method_name, *args, &block)
collection.send(method_name, *args, &block)
end
end