How to find what all associations have dependent: destroy associated with them from a concern

Rails
1

I am building a soft delete solution a la

. Right now I am manually finding which all associated models need to be
deleted when a model is deleted and doing it manually in each model
which
of course is a not a good practice. How do I do it? I don’t want to use
a
gem, I want to write logic in my own hands.

2

Hi Aravind,

I am not sure if I understood your question correctly but I will give a
try.
I think you want to delete all associated records with another type of
the Model.

class Body
has_many: boobs, dependent: :destroy
end

In this instance destroy parameter is responsible for generating/using code
that removes all dependent boob if the body instance is destroyed.

Did I get you right?

3

Highly offensive!

4

On Saturday, 18 July 2015 01:56:43 UTC-5, Aravind Gopalakrishnan wrote:

I am building a soft delete solution a la

. Right now I am manually finding which all associated models need to be
deleted when a model is deleted and doing it manually in each model which
of course is a not a good practice. How do I do it? I don’t want to use a
gem, I want to write logic in my own hands.

The place to start is reflect_on_all_associations:

This will give you all the associations defined for the model. You can
then
request the option you’re interested in thus:

klass.reflect_on_all_associations do |reflection|
  if reflection.options[:dependent]
    # do something with it
  end
end

–Matt J.