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Questions tagged [named-scope]

339 questions
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Rails 2.3.8 named_scope chaining

I have the following nested if statement hairball, I'm wondering if there is a more efficient way of writing this code (less lines of code that doesn't require so many conditionals) Each of the methods are named_scopes within the model.. box =…
Rabbott
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Rails3 - many_to_many relationships and scope chaining

Let's say I have a many_to_many relation ship between Articles and Tags class ArticleTag < ActiveRecord::Base belongs_to :article belongs_to :tag end class Tag < ActiveRecord::Base has_many :article_tags has_many :articles, :through =>…
MrRuru
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Rails 3: How to create a named scope based on Controller's method?

In my ApplicationController I have the demo_mode? method (which returns true when the currently logged in user type is "demo"). Post model has the publisher_id field, which refers to Users table. User has the user_type field, one of the possible…
Misha Moroshko
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Iterating over a has_many collection within a named_scope

Here are my models: class Message < ActiveRecord::Base has_many :comments attr_accessible :read #bool def unread_comments? comments.each { |comment| return true unless comment.read?} false end end class Comment <…
TheDelChop
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Will this work with named_scope in rails?

I can't find the answer to this anywhere, and I don't have the brainpower left today to think up a way to confirm it on my own. I have a named scope like this... named_scope :fresh, :conditions => ['updated_at > ?', 4.hours.ago] And I don't know if…
anithri
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ActiveRecord keeping scope encapsulated

I have two models, foo and bar, foo has many bars. Bar is an event that happens for a given period of time, so I'd like a method or scope that returns an ActiveRecord::Relation representing the foos that have currently active bars. This is easy…
SooDesuNe
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Rails 3: How to merge queries or scopes for complex query?

I'm building an events app that is very simple, it has a title and start_date and end_date. I would like to filter my query by mixing some of the values, like: if the start_date has passed but the end_date has not, the event is active and should be…
Landitus
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How would I join to a subselect (a scope) using Rails 3 and Arel?

I need to join a table to the a select/group-by query (which includes the same table), and I'd like to do it using Arel. I have a table of :phenotypes which are has_and_belongs_to_many :genes, which are themselves has_and_belongs_to_many…
Translunar
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How to allow JS script to use certain variables

I'm trying to make game, where you have to program AI for your bot. I know you can access variable from your code with whole map window.myGame.data.map and you can modify it, for example, erase other bots. How can I prevent this? Is there sandbox…
Jan Kaifer
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Is there a build in functionality in .NET to create thread bound variables?

Is there a way to do this (psedo code): GetCurrentThread().Items.Add(new RefObject); then later on retrive it RefObject[] refObjs = GetCurrentThread().Items; and enumerate the objects. Obviously both calls will occur on the same thread during the…
user44298
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Rails ActiveRecord 4.2 custom sort order

I'm trying to apply a custom scope or class method to the following ActiveRecord model however I'm not sure of the best approach or implementation following Rails best practices. Please note this is just a simplified example project for explanation…
Charles Green
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How to add existing named_scope to anonymous scope?

I have a model: class Shirt < ActiveRecord::Base named_scope :red, :conditions => { :color => 'red' } named_scope :blue, :conditions => { :color => 'blue' } named_scope :xl, :conditions => { :size => 'xl' } end I forgot, how to easy add…
Sławosz
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Default conditions for Rails models

I have a model which has a field called deleted, which is used to mark those deleted items. So normally I would just want to query those having deleted = false items, and in some special cases to list those deleted items for restoring. Is it…
PeterWong
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What is a difference between named_scope and named_scope + lambda

What is a difference between named_scope and named_scope + lambda Ruby on Rails code statements? named_scope :with_avatar, :conditions => ['avatar IS NOT NULL'] and named_scope :date_from, lambda { |date| { :conditions => ['created_at >= ?',…
Maestro
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Error when combining search scopes

I have a web-service that allows clients to search for articles with query parameters.It works fine if only one parameter is included but fails if I combine search_query and category. This is based on Comfortable_Mexican_Sofa where for_category is…
Antarr Byrd
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