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Where Clause Along with Associations in Rails
As a developer you will struggle with models associations but sometimes you may need only some record from an associations, and when you need it frequently you can create a separate association like so: has_many :remote_employees, -> {where(remote:true)}, class_name: 'Employee'
ActiveRecord greater/less Than Comparison
Many times you will find yourself query for some records in between of a range being it a date range or a numeric range. ActiveRecord allows you to use a Ruby range or incomplete range to query data in the database.