How to make a complex named scope play nice with associations and other named scopes [rails]


Igor Carron
HOME ยป Databases

I have the following named scope on


class RentableItem < ActiveRecord::Base
named_scope :available_at, lambda{ |starts_at, ends_at| {
:select => "t.*",
:from => "(SELECT ri.*, COALESCE(c1.start_date, '#{starts_at}') AS EarliestAvailable,
COALESCE(c2.end_date, '#{ends_at}') AS LatestAvailable
FROM rentable_items ri
LEFT OUTER JOIN contracts c1 ON (ri.id = c1.rentable_item_id AND c1.start_date BETWEEN '#{starts_at}' AND '#{ends_at}')
LEFT OUTER JOIN contracts c2 ON (ri.id = c2.rentable_item_id AND c2.end_date BETWEEN '#{star

Related to : How to make a complex named scope play nice with associations and other named scopes [rails]
How to make a complex named scope play nice with associations and other named scopes [rails]
by Igor Carron in Databases

I have the following named scope on


class RentableItem < ActiveRecord::Base
named_scope :available_at, lambda{ |starts_at, ends_at| {
:select => "t.*",
:from => "(SELECT ri.*, COALESCE(c1.start_date, '#{starts_at}') AS EarliestAvailable,
TAGS: make complex named scope play nice
How do I make an exclusive rather than inclusive query with named scopes in Rails?
by arbeitandy in Databases

I've created an application that finds service providers based on multiple services passed to it. This is done via has many_through so there is a join object. Basically, if a user asks for service providers with Service A and Service B my scope returns service providers who offer either BOTH Serv


how to join named scopes in rails
2/12/2014 2:20 am by Dmitry in Databases

I want to join my named scopes as I generate them with an array. how wouldI do that , i can't join named scopes, is there a better way to do this?

 scope :search, ->(attrs_for_search,params) do
   if attrs_for_search.present?
     params_to_search_on = params.keys & attrs_f
Ruby on Rails: Nested named scopes
by Jim Davis in Databases

Is there any way to nest named scopes inside of each other from different models?


Example:


class Company
has_many :employees
named_scope :with_employees, :include => :employees
end
class Employee
belongs_to :company
belongs_to :s
ruby on rails named scopes (searching)
by Tim Benninghoff in Databases

I have a named scope (name) combination of first and last name and I'm wanting to use this in a search box.


I have the code below:


named_scope :full_name, lambda { |fn| {:joins => :actor, :conditions => ['first_name LIKE ? OR second_name LIKE ?', "%#{fn}%", "%#{fn
rails find: using conditions while including same table twice via different named associations
by Iron Woode in Databases

I have posts which are sent by users to other users. There are two models - :post and :user, and :post has the following named associations:


belongs_to :from_user, :class_name => "User", :foreign_key => "from_user_id"
belongs_to :to_user, :class_name => "User", :fore
Can I create an *un*named scope in Rails?
by darko.topolsek in Databases

I know you can create named scopes in Rails, which allow you to specify conditions which can then be built on later:


named_scope :active, :conditions => {:active => true}
...
MyModel.active.find(...)

This works by creating a proxy object which i


What's the significance of named scope in Rails?
by GunnarHafdal in Databases

Before going for details.


Question 1:-- What's the meaning of scope here (ie named *scope)?*


what's the benefits of using named scope?


Now:-


from Agile Development with Rails book:--


class Order < ActiveRecord::Base
named_
rails named scope issues
by pulkizine in Databases

I have two named scopes... both which work separately, but when combined do not work.


named_scope :total, :select => "COUNT(*) as days, AVG(price) as price, SUM(price) AS total", :group => :parent_id
named_scope :currency, lambda { |code| { :select => "*, price *
Rails 4 named scope with record always at end
by Olympian Last in Databases

Is there a way to order records alphabetically, excluding one record, which I want at the end? class Category < ActiveRecord::Base default_scope -> { order(:name) }endI always want the category named 'Other' to be at the end.


HD Wallpapers
3D
3D Abstract
City
Celebrities
Indian Celebrities
Cars
Travel
Girls
Animals Birds
Movies
Sports
Black White
Nature
Planes
Anime
Food Drink
Dreamy Fantasy
Architecture
Games
Space
Holidays
Flowers
Love
Artistic
Baby
Beach
Bikes Motorcycles
Macro
Computers
Vector
Funny
Army
Textures
Brands
Misc
Music
Other
Privacy Policy - Copyrights Notice - Feedback - Report Violation - RSS 2017 © bighow.org All Rights Reserved .