[Rails] Re: how to find what all associations have dependent: destroy associated with them from a concern

2015-08-20 Thread Matt Jones 


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

 I am building a soft delete solution a la 
 https://github.com/discourse/discourse/blob/master/app/models/concerns/trashable.rb
  
 . 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`:

http://api.rubyonrails.org/classes/ActiveRecord/Reflection/ClassMethods.html#method-i-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 Jones

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[Rails] Re: how to find what all associations have dependent: destroy associated with them from a concern

2015-07-20 Thread Taras Matsyk 
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?

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[Rails] Re: how to find what all associations have dependent: destroy associated with them from a concern

2015-07-20 Thread Elizabeth McGurty 
Highly offensive!

On Monday, July 20, 2015 at 3:29:59 PM UTC-4, Ruby-Forum.com User wrote:

 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? 

 -- 
 Posted via http://www.ruby-forum.com/. 


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