Ruby on Rails: How do I get rid of the ActiveRecord:ReadOnlyRecord error?

Question

It's happening on teh lp.save line. Which is weird, because I have the same code else where (slightly different though) for re-sorting the link_pages.

the menu bars and link pages are a has and belongs to many relationship

this is in the menu_bar/destroy method

 @menu_bar.link_pages.each do |lp|
      lp.sequence = LinkPage::NOT_USED
      lp.save
    end

also, rails 2.3.8

Answer 1

If you loaded link_pages via an ARel :join query, you can probably get rid of the error by changing :join to :include.

A similar question with a more detailed answer was answered here .

Answer 2

You can also use :readonly => false in your find options.

Look at https://stackoverflow.com/a/960903/327786

It works if you use rails 2.3.15 at least.