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rails--rails/activerecord/test/models/author.rb
Jon Leighton 0a12a5f816 Deprecate eager-evaluated scopes.
Don't use this:

    scope :red, where(color: 'red')
    default_scope where(color: 'red')

Use this:

    scope :red, -> { where(color: 'red') }
    default_scope { where(color: 'red') }

The former has numerous issues. It is a common newbie gotcha to do
the following:

    scope :recent, where(published_at: Time.now - 2.weeks)

Or a more subtle variant:

    scope :recent, -> { where(published_at: Time.now - 2.weeks) }
    scope :recent_red, recent.where(color: 'red')

Eager scopes are also very complex to implement within Active
Record, and there are still bugs. For example, the following does
not do what you expect:

    scope :remove_conditions, except(:where)
    where(...).remove_conditions # => still has conditions
2012-03-21 22:18:18 +00:00

200 lines
9.6 KiB
Ruby

class Author < ActiveRecord::Base
has_many :posts
has_many :very_special_comments, :through => :posts
has_many :posts_with_comments, :include => :comments, :class_name => "Post"
has_many :popular_grouped_posts, :include => :comments, :class_name => "Post", :group => "type", :having => "SUM(comments_count) > 1", :select => "type"
has_many :posts_with_comments_sorted_by_comment_id, :include => :comments, :class_name => "Post", :order => 'comments.id'
has_many :posts_sorted_by_id_limited, :class_name => "Post", :order => 'posts.id', :limit => 1
has_many :posts_with_categories, :include => :categories, :class_name => "Post"
has_many :posts_with_comments_and_categories, :include => [ :comments, :categories ], :order => "posts.id", :class_name => "Post"
has_many :posts_containing_the_letter_a, :class_name => "Post"
has_many :posts_with_extension, :class_name => "Post" do #, :extend => ProxyTestExtension
def testing_proxy_owner
proxy_owner
end
def testing_proxy_reflection
proxy_reflection
end
def testing_proxy_target
proxy_target
end
end
has_one :post_about_thinking, :class_name => 'Post', :conditions => "posts.title like '%thinking%'"
has_one :post_about_thinking_with_last_comment, :class_name => 'Post', :conditions => "posts.title like '%thinking%'", :include => :last_comment
has_many :comments, :through => :posts
has_many :comments_containing_the_letter_e, :through => :posts, :source => :comments
has_many :comments_with_order_and_conditions, :through => :posts, :source => :comments, :order => 'comments.body', :conditions => "comments.body like 'Thank%'"
has_many :comments_with_include, :through => :posts, :source => :comments, :include => :post
has_many :first_posts
has_many :comments_on_first_posts, :through => :first_posts, :source => :comments, :order => 'posts.id desc, comments.id asc'
has_one :first_post
has_one :comment_on_first_post, :through => :first_post, :source => :comments, :order => 'posts.id desc, comments.id asc'
has_many :thinking_posts, :class_name => 'Post', :conditions => { :title => 'So I was thinking' }, :dependent => :delete_all
has_many :welcome_posts, :class_name => 'Post', :conditions => { :title => 'Welcome to the weblog' }
has_many :comments_desc, :through => :posts, :source => :comments, :order => 'comments.id DESC'
has_many :limited_comments, :through => :posts, :source => :comments, :limit => 1
has_many :funky_comments, :through => :posts, :source => :comments
has_many :ordered_uniq_comments, :through => :posts, :source => :comments, :uniq => true, :order => 'comments.id'
has_many :ordered_uniq_comments_desc, :through => :posts, :source => :comments, :uniq => true, :order => 'comments.id DESC'
has_many :readonly_comments, :through => :posts, :source => :comments, :readonly => true
has_many :special_posts
has_many :special_post_comments, :through => :special_posts, :source => :comments
has_many :sti_posts, :class_name => 'StiPost'
has_many :sti_post_comments, :through => :sti_posts, :source => :comments
has_many :special_nonexistant_posts, :class_name => "SpecialPost", :conditions => "posts.body = 'nonexistant'"
has_many :special_nonexistant_post_comments, :through => :special_nonexistant_posts, :source => :comments, :conditions => { 'comments.post_id' => 0 }
has_many :nonexistant_comments, :through => :posts
has_many :hello_posts, :class_name => "Post", :conditions => "posts.body = 'hello'"
has_many :hello_post_comments, :through => :hello_posts, :source => :comments
has_many :posts_with_no_comments, :class_name => 'Post', :conditions => { 'comments.id' => nil }, :include => :comments
has_many :hello_posts_with_hash_conditions, :class_name => "Post",
:conditions => {:body => 'hello'}
has_many :hello_post_comments_with_hash_conditions, :through =>
:hello_posts_with_hash_conditions, :source => :comments
has_many :other_posts, :class_name => "Post"
has_many :posts_with_callbacks, :class_name => "Post", :before_add => :log_before_adding,
:after_add => :log_after_adding,
:before_remove => :log_before_removing,
:after_remove => :log_after_removing
has_many :posts_with_proc_callbacks, :class_name => "Post",
:before_add => Proc.new {|o, r| o.post_log << "before_adding#{r.id || '<new>'}"},
:after_add => Proc.new {|o, r| o.post_log << "after_adding#{r.id || '<new>'}"},
:before_remove => Proc.new {|o, r| o.post_log << "before_removing#{r.id}"},
:after_remove => Proc.new {|o, r| o.post_log << "after_removing#{r.id}"}
has_many :posts_with_multiple_callbacks, :class_name => "Post",
:before_add => [:log_before_adding, Proc.new {|o, r| o.post_log << "before_adding_proc#{r.id || '<new>'}"}],
:after_add => [:log_after_adding, Proc.new {|o, r| o.post_log << "after_adding_proc#{r.id || '<new>'}"}]
has_many :unchangable_posts, :class_name => "Post", :before_add => :raise_exception, :after_add => :log_after_adding
has_many :categorizations
has_many :categories, :through => :categorizations
has_many :named_categories, :through => :categorizations
has_many :special_categorizations
has_many :special_categories, :through => :special_categorizations, :source => :category
has_one :special_category, :through => :special_categorizations, :source => :category
has_many :categories_like_general, :through => :categorizations, :source => :category, :class_name => 'Category', :conditions => { :name => 'General' }
has_many :categorized_posts, :through => :categorizations, :source => :post
has_many :unique_categorized_posts, :through => :categorizations, :source => :post, :uniq => true
has_many :nothings, :through => :kateggorisatons, :class_name => 'Category'
has_many :author_favorites
has_many :favorite_authors, :through => :author_favorites, :order => 'name'
has_many :tagging, :through => :posts
has_many :taggings, :through => :posts
has_many :tags, :through => :posts
has_many :similar_posts, :through => :tags, :source => :tagged_posts, :uniq => true
has_many :distinct_tags, :through => :posts, :source => :tags, :select => "DISTINCT tags.*", :order => "tags.name"
has_many :post_categories, :through => :posts, :source => :categories
has_many :tagging_tags, :through => :taggings, :source => :tag
has_many :tags_with_primary_key, :through => :posts
has_many :books
has_many :subscriptions, :through => :books
has_many :subscribers, :through => :subscriptions, :order => "subscribers.nick" # through has_many :through (on through reflection)
has_many :distinct_subscribers, :through => :subscriptions, :source => :subscriber, :select => "DISTINCT subscribers.*", :order => "subscribers.nick"
has_one :essay, :primary_key => :name, :as => :writer
has_one :essay_category, :through => :essay, :source => :category
has_one :essay_owner, :through => :essay, :source => :owner
has_one :essay_2, :primary_key => :name, :class_name => 'Essay', :foreign_key => :author_id
has_one :essay_category_2, :through => :essay_2, :source => :category
has_many :essays, :primary_key => :name, :as => :writer
has_many :essay_categories, :through => :essays, :source => :category
has_many :essay_owners, :through => :essays, :source => :owner
has_many :essays_2, :primary_key => :name, :class_name => 'Essay', :foreign_key => :author_id
has_many :essay_categories_2, :through => :essays_2, :source => :category
belongs_to :owned_essay, :primary_key => :name, :class_name => 'Essay'
has_one :owned_essay_category, :through => :owned_essay, :source => :category
belongs_to :author_address, :dependent => :destroy
belongs_to :author_address_extra, :dependent => :delete, :class_name => "AuthorAddress"
has_many :category_post_comments, :through => :categories, :source => :post_comments
has_many :misc_posts, :class_name => 'Post',
:conditions => { :posts => { :title => ['misc post by bob', 'misc post by mary'] } }
has_many :misc_post_first_blue_tags, :through => :misc_posts, :source => :first_blue_tags
has_many :misc_post_first_blue_tags_2, :through => :posts, :source => :first_blue_tags_2,
:conditions => { :posts => { :title => ['misc post by bob', 'misc post by mary'] } }
has_many :posts_with_default_include, :class_name => 'PostWithDefaultInclude'
has_many :comments_on_posts_with_default_include, :through => :posts_with_default_include, :source => :comments
scope :relation_include_posts, -> { includes(:posts) }
scope :relation_include_tags, -> { includes(:tags) }
attr_accessor :post_log
after_initialize :set_post_log
def set_post_log
@post_log = []
end
def label
"#{id}-#{name}"
end
def social
%w(twitter github)
end
validates_presence_of :name
private
def log_before_adding(object)
@post_log << "before_adding#{object.id || '<new>'}"
end
def log_after_adding(object)
@post_log << "after_adding#{object.id}"
end
def log_before_removing(object)
@post_log << "before_removing#{object.id}"
end
def log_after_removing(object)
@post_log << "after_removing#{object.id}"
end
def raise_exception(object)
raise Exception.new("You can't add a post")
end
end
class AuthorAddress < ActiveRecord::Base
has_one :author
def self.destroyed_author_address_ids
@destroyed_author_address_ids ||= []
end
before_destroy do |author_address|
AuthorAddress.destroyed_author_address_ids << author_address.id
end
end
class AuthorFavorite < ActiveRecord::Base
belongs_to :author
belongs_to :favorite_author, :class_name => "Author"
end