On 30 March 2010 03:27, [email protected] <[email protected]> wrote:
> Hi,
>
> My application is running fine but now I had an requirement like
> when somebody tries to delete the record from database using delete or
> delete_all I should not delete the record rather I should set the
> delete flag to 1. There are many model objects and there are many
> places I am using delete and delete_all method. I dont want to touch
> all the places rather I want to override the delete method of
> ActiveRecord::Base and also when application tries to get the records
> from database it should get only records those the delete flag set to
> 0. For this I have to override the base find method too. But I dont
> know how to override and where to override, and I dont want to add the
> overridden delete method in all the model objects at the same time.
> Please suggest the best solution for this. I am almost struck with
> this. please please help me on this....
>
If you've used Model.find(:all, ....) you're probably going to be a
little stuck [1] , but if you've used Model.all, you can override this
as a custom named scope in your model.
named_scope :all, :conditions => "model_table.deleted_flag = false"
Alternatively, maybe "default_scope :conditions => { :deleted_flag =>
false } " would be better for you. But you'd need to be aware of using
"with_exclusive_scope" if you want to chain scopes and return the
deleted records too.
[1] You can do something along the lines of
http://www.freezzo.com/2008/05/14/override-default-find-conditions-for-model/,
but that makes it difficult to do a real "find all" - you'd probably
have to alias the original method to a new name and remember to use it
- not really conventional...
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