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schema.rb
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schema.rb
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require 'active_record'
case ENV['DB'].try(:downcase)
when 'mysql', 'mysql2'
# To test with MySQL: `DB=mysql bundle exec rake spec`
ActiveRecord::Base.establish_connection(
adapter: 'mysql2',
database: 'ransack',
username: ENV.fetch("MYSQL_USERNAME") { "root" },
password: ENV.fetch("MYSQL_PASSWORD") { "" },
encoding: 'utf8'
)
when 'pg', 'postgres', 'postgresql'
# To test with PostgreSQL: `DB=postgresql bundle exec rake spec`
ActiveRecord::Base.establish_connection(
adapter: 'postgresql',
database: 'ransack',
username: ENV.fetch("DATABASE_USERNAME") { "postgres" },
password: ENV.fetch("DATABASE_PASSWORD") { "" },
host: ENV.fetch("DATABASE_HOST") { "localhost" },
min_messages: 'warning'
)
else
# Otherwise, assume SQLite3: `bundle exec rake spec`
ActiveRecord::Base.establish_connection(
adapter: 'sqlite3',
database: ':memory:'
)
end
# This is just a test app with no sensitive data, so we explicitly allowlist all
# attributes and associations for search. In general, end users should
# explicitly authorize each model, but this shows a way to configure the
# unrestricted default behavior of versions prior to Ransack 4.
#
class ApplicationRecord < ActiveRecord::Base
self.abstract_class = true
def self.ransackable_attributes(auth_object = nil)
authorizable_ransackable_attributes
end
def self.ransackable_associations(auth_object = nil)
authorizable_ransackable_associations
end
end
class Person < ApplicationRecord
default_scope { order(id: :desc) }
belongs_to :parent, class_name: 'Person', foreign_key: :parent_id
has_many :children, class_name: 'Person', foreign_key: :parent_id
has_many :articles
has_many :story_articles
has_many :published_articles, ->{ where(published: true) },
class_name: "Article"
has_many :comments
has_many :authored_article_comments, through: :articles,
source: :comments, foreign_key: :person_id
has_many :notes, as: :notable
scope :restricted, lambda { where("restricted = 1") }
scope :active, lambda { where("active = 1") }
scope :over_age, lambda { |y| where(["age > ?", y]) }
scope :of_age, lambda { |of_age|
of_age ? where("age >= ?", 18) : where("age < ?", 18)
}
scope :sort_by_reverse_name_asc, lambda { order(Arel.sql("REVERSE(name) ASC")) }
scope :sort_by_reverse_name_desc, lambda { order("REVERSE(name) DESC") }
alias_attribute :full_name, :name
ransack_alias :term, :name_or_email
ransack_alias :daddy, :parent_name
ransacker :reversed_name, formatter: proc { |v| v.reverse } do |parent|
parent.table[:name]
end
ransacker :array_people_ids,
formatter: proc { |v| Person.first(2).map(&:id) } do |parent|
parent.table[:id]
end
ransacker :array_where_people_ids,
formatter: proc { |v| Person.where(id: v).map(&:id) } do |parent|
parent.table[:id]
end
ransacker :array_people_names,
formatter: proc { |v| Person.first(2).map { |p| p.id.to_s } } do |parent|
parent.table[:name]
end
ransacker :array_where_people_names,
formatter: proc { |v| Person.where(id: v).map { |p| p.id.to_s } } do |parent|
parent.table[:name]
end
ransacker :doubled_name do |parent|
Arel::Nodes::InfixOperation.new(
'||', parent.table[:name], parent.table[:name]
)
end
ransacker :sql_literal_id do
Arel.sql('people.id')
end
ransacker :name_case_insensitive, type: :string do
arel_table[:name].lower
end
ransacker :with_arguments, args: [:parent, :ransacker_args] do |parent, args|
min, max = args
query = <<-SQL
(SELECT MAX(articles.title)
FROM articles
WHERE articles.person_id = people.id
AND LENGTH(articles.body) BETWEEN #{min} AND #{max}
GROUP BY articles.person_id
)
SQL
.squish
Arel.sql(query)
end
def self.ransackable_attributes(auth_object = nil)
if auth_object == :admin
authorizable_ransackable_attributes - ['only_sort']
else
authorizable_ransackable_attributes - ['only_sort', 'only_admin']
end
end
def self.ransortable_attributes(auth_object = nil)
if auth_object == :admin
column_names + _ransackers.keys - ['only_search']
else
column_names + _ransackers.keys - ['only_search', 'only_admin']
end
end
end
class Musician < Person
end
class Article < ApplicationRecord
belongs_to :person
has_many :comments
has_and_belongs_to_many :tags
has_many :notes, as: :notable
alias_attribute :content, :body
default_scope { where("'default_scope' = 'default_scope'") }
scope :latest_comment_cont, lambda { |msg|
join = <<-SQL
(LEFT OUTER JOIN (
SELECT
comments.*,
row_number() OVER (PARTITION BY comments.article_id ORDER BY comments.id DESC) AS rownum
FROM comments
) AS latest_comment
ON latest_comment.article_id = article.id
AND latest_comment.rownum = 1
)
SQL
.squish
joins(join).where("latest_comment.body ILIKE ?", "%#{msg}%")
}
ransacker :title_type, formatter: lambda { |tuples|
title, type = JSON.parse(tuples)
Arel::Nodes::Grouping.new(
[
Arel::Nodes.build_quoted(title),
Arel::Nodes.build_quoted(type)
]
)
} do |_parent|
articles = Article.arel_table
Arel::Nodes::Grouping.new(
%i[title type].map do |field|
Arel::Nodes::NamedFunction.new(
'COALESCE',
[
Arel::Nodes::NamedFunction.new('TRIM', [articles[field]]),
Arel::Nodes.build_quoted('')
]
)
end
)
end
end
class StoryArticle < Article
end
class Recommendation < ApplicationRecord
belongs_to :person
belongs_to :target_person, class_name: 'Person'
belongs_to :article
end
module Namespace
class Article < ::Article
end
end
module Namespace
class Article < ::Article
end
end
class Comment < ApplicationRecord
belongs_to :article
belongs_to :person
default_scope { where(disabled: false) }
end
class Tag < ApplicationRecord
has_and_belongs_to_many :articles
end
class Note < ApplicationRecord
belongs_to :notable, polymorphic: true
end
class Account < ApplicationRecord
belongs_to :agent_account, class_name: "Account"
belongs_to :trade_account, class_name: "Account"
end
class Address < ApplicationRecord
has_one :organization
end
class Organization < ApplicationRecord
belongs_to :address
has_many :employees
end
class Employee < ApplicationRecord
belongs_to :organization
has_one :address, through: :organization
end
module Schema
def self.create
ActiveRecord::Migration.verbose = false
ActiveRecord::Schema.define do
create_table :people, force: true do |t|
t.integer :parent_id
t.string :name
t.string :email
t.string :only_search
t.string :only_sort
t.string :only_admin
t.string :new_start
t.string :stop_end
t.integer :salary
t.date :life_start
t.boolean :awesome, default: false
t.boolean :terms_and_conditions, default: false
t.boolean :true_or_false, default: true
t.timestamps null: false
end
create_table :articles, force: true do |t|
t.integer :person_id
t.string :title
t.text :subject_header
t.text :body
t.string :type
t.boolean :published, default: true
end
create_table :comments, force: true do |t|
t.integer :article_id
t.integer :person_id
t.text :body
t.boolean :disabled, default: false
end
create_table :tags, force: true do |t|
t.string :name
end
create_table :articles_tags, force: true, id: false do |t|
t.integer :article_id
t.integer :tag_id
end
create_table :notes, force: true do |t|
t.integer :notable_id
t.string :notable_type
t.string :note
end
create_table :recommendations, force: true do |t|
t.integer :person_id
t.integer :target_person_id
t.integer :article_id
end
create_table :accounts, force: true do |t|
t.belongs_to :agent_account
t.belongs_to :trade_account
end
create_table :addresses, force: true do |t|
t.string :city
end
create_table :organizations, force: true do |t|
t.string :name
t.integer :address_id
end
create_table :employees, force: true do |t|
t.string :name
t.integer :organization_id
end
end
10.times do
person = Person.make
Note.make(notable: person)
3.times do
article = Article.make(person: person)
3.times do
article.tags = [Tag.make, Tag.make, Tag.make]
end
Note.make(notable: article)
10.times do
Comment.make(article: article, person: person)
end
end
end
Comment.make(
body: 'First post!',
article: Article.make(title: 'Hello, world!')
)
end
end
module SubDB
class Base < ApplicationRecord
self.abstract_class = true
establish_connection(
adapter: 'sqlite3',
database: ':memory:'
)
end
class OperationHistory < Base
end
module Schema
def self.create
s = ::ActiveRecord::Schema.new
s.instance_variable_set(:@connection, SubDB::Base.connection)
s.verbose = false
s.define({}) do
create_table :operation_histories, force: true do |t|
t.string :operation_type
t.integer :people_id
end
end
end
end
end