Type:
Class

Association proxies in Active Record are middlemen between the object that holds the association, known as the @owner, and the actual associated object, known as the @target. The kind of association any proxy is about is available in @reflection. That's an instance of the class ActiveRecord::Reflection::AssociationReflection.

For example, given

class Blog < ActiveRecord::Base
  has_many :posts
end

blog = Blog.first

the association proxy in blog.posts has the object in blog as @owner, the collection of its posts as @target, and the @reflection object represents a :has_many macro.

This class delegates unknown methods to @target via method_missing.

The @target object is not loaded until needed. For example,

blog.posts.count

is computed directly through SQL and does not trigger by itself the instantiation of the actual post records.

many?

many?(&block) Instance Public methods Returns true if the collection has

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second

second(*args) Instance Public methods Same as first except returns

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loaded?

loaded?() Instance Public methods Returns true if the association

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count

count(column_name = nil, options = {}) Instance Public methods Count all records

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to_ary

to_ary() Instance Public methods Returns a new array of objects from the collection

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spawn

spawn() Instance Public methods Alias for:

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destroy_all

destroy_all() Instance Public methods Deletes the records of the collection

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prepend

prepend(*args) Instance Public methods

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reset

reset() Instance Public methods Unloads the association. Returns self

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concat

concat(*records) Instance Public methods Add one or more records to the collection

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