mysql - Model with namespace - wrong table name (without namespace) -


i found problem in 1 of legacy applications (outdated rails-3.0.20). application has lots of components , nested models. problem existed on 1 of production servers (same environments other productions , mine dev).

there model name space looks like

module great   class item   end end

table name named great_items.

when debug/open on server fault i've found calculated table name items istead of great_items.

$ great::item.all #=> activerecord::statementinvalid: no attribute named `name` exists table `items`

so thought mby there simmilar class same namespace, i've checked , wasn't. 2nd thought set table name explicit tried

self.table_name = 'great_items' # & set_table_name 'great_items'

after changes run rails c , table name setted fine:

$ great::item.table_name #=> 'great_items'

but when tried obtain items there freak error, not understand till now!

$ great::item.all #=> activerecord::statementinvalid: mysql2::error: table 'db.items' doesn't exist: select `great_items`.* `items` `great_items`.`some_default_scope` = 0

as can see in above example table has correct name select values , in where statement, in from value incorrect.

i curious i've checked activerecord::base mysql adapter , there kind of catching table name tried reset_table_name. reset helped setup expected name('great_items') above errors didn't missed.

problem dissapeared when turn of class catching in production enviroment - wasn't solution.

finally kinda 'solved' using reset_column_information after set_table_name, think isn't solution either.

my question know cause issue , how solve without reloading class cache?

assumed table names dont take account modules, noticed.

but know, can set yourself, using:

self.table_name = 'great_items'

according this doc, because use 3.0.x, have use:

set_table_name "great_items"

this must put on top of class definition


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