ruby on rails - Active Record - Delete all dependent values only if its present in child table -


I am working in a rail app, about me : dependent => delete_all The information is a model

Consider the example below 

  class TableA & lt; ActiveRecord :: Base has_many: tablebs ,: dependent = & gt; : Delete_all final category TableB & lt; ActiveRecord :: Base is_to: tablea end

If there is a similar foreign key reference in the tablebay that represents the table, using the active record, delete all the related rows from the table by removing the record in the table. Will be removed. / P>

But when there is no consistency in the tablebase, it shows that

unspecified continuous TableA :: TableB

what I try To receive, the active record should be removed from the existing values ​​if there is currently no more dependent value, then ignore the step.

Is this possible?

Thank you, Balan

I think the problem is that Belongs_to should be related to a table in equality. Therefore, change the tableas to tablea as the bottom:

I will give you the link to see the difference between : delete_all < I also suggest looking at and : deleted . 

  Classes TableA & lt; ActiveRecord :: Base has_many: tablebs ,: dependent = & gt; : Delete_all final category TableB & lt; ActiveRecord :: Base is_to: tablea end

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