rails-4 Automatic counter-cache issue with has-many association in Rails 4.2.x Recently while working on one of our project there was an requirement of tracking count of records associated with has-many association. But also there was "is_hidden" flag set on some
active-record ActiveRecord::Dirty Performing an action via a callback is fairly easy and doable. Sometimes requirement may be a bit enhance that we need to track every change now and then. On the same note, if
attributes Setting attribute values in active records. This is an awesome link on how to setup attributes on ActiveRecord LINK: 5-ways to set attributes And I want to mention one trick about active record: When we try to assign a
active-record ActiveRecord - Find in Batch ActiveRecord::Base#find_in_batches. This lets you iterate over all the records in cursor-like fashion (only retrieving a set number of records at a time into the memory): @Subscription.find_in_batches(
mass-assignment Mass Assignment in Rails 3 What is Mass Assignment? Assigning multiple attributes of a record with params received from the application within a single query. For example,{:user => {:first_name => "FirstName", :last_name =>