complex validation on object update? - ruby

Question

I have a model "WorkDetail" and db-attrs related to problem are 'name', 'status' and 'approved_status' with datatype all integer and the model class definition is as:-
class WorkDetail < ActiveRecord::Base
enum name: [:smartcheck, :install, :verify]
enum status: [:pending, :inprogress, :complete]
belongs_to :work_order
has_many :cabinets
after_save :work_order_status_update
private
def work_order_status_update
work_detail_count = self.work_order.work_details.count
status_array = self.work_order.work_details.where(status: 2).count
if status_array == work_detail_count
if work_detail_count == 0
self.work_order.update({status: "pending"})
else
self.work_order.update({status: "complete"})
end
else
self.work_order.update({status: "inprogress"})
end
end
end
Now, I would like to add custom validation to be applied for below problem :-
validation should only apply for update process.
If object's name == "smartcheck" and status == "complete" then only the approved_status boolean attribute should be updated to true (the
default is false on migration), else should give error if not
smartchecked and the status is not complete on trying to update
approved_status attr.
Hoping the question makes sense and Thanks !!! in advance guys, Happy Coding.

Answer 1

1) Validation should only apply for update process
after_save :work_order_status_update, :on => :update
2) If object's name == "smartcheck" and status == "complete" then only
the approved_status boolean attribute should be updated to true (the
default is false on migration), else should give error if not
smartchecked and the status is not complete on trying to update
approved_status attr.
def test_status_and_name
if self.name == "smartcheck" and self.status == "complete"
self.update_attributes(approved_status: true)
else
errors[:base] << "smartchecked and the status is not complete on trying to update approved_status attr."
end
end