Rails - Apr 2007 - Migrations: something like before_up/after_up hook?

Hi all

I have to execute some code always after the up methods of my
migrations. I wondered if there is a before_up/after_up hook that I can
override? Or how could I achieve that?

Thanks a lot
Josh

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Joshua Muheim wrote:
> Hi all
> 
> I have to execute some code always after the up methods of my
> migrations. I wondered if there is a before_up/after_up hook that I can
> override? Or how could I achieve that?
> 
> Thanks a lot
> Josh
Use method call in the end of up method?

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Jamal Soueidan wrote:
> Joshua Muheim wrote:
>> Hi all
>> 
>> I have to execute some code always after the up methods of my
>> migrations. I wondered if there is a before_up/after_up hook that I can
>> override? Or how could I achieve that?
>> 
>> Thanks a lot
>> Josh
> 
> Use method call in the end of up method?
No, I want it to execute automatically, because it''s always the same 
action and I don''t want it in every migration...

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Joshua Muheim wrote:
> Jamal Soueidan wrote:
>> Joshua Muheim wrote:
>>> Hi all
>>> 
>>> I have to execute some code always after the up methods of my
>>> migrations. I wondered if there is a before_up/after_up hook that I
can
>>> override? Or how could I achieve that?
>>> 
>>> Thanks a lot
>>> Josh
>> 
>> Use method call in the end of up method?
> 
> No, I want it to execute automatically, because it''s always the
same
> action and I don''t want it in every migration...
What do you exactly need to do before or after every migration?

create_table, maybe have something before and after ?

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> What do you exactly need to do before or after every migration?
> 
> create_table, maybe have something before and after ?
I''m working on a plugin that automatically loads some fixtures
according
to every migration, something like

db/migrate/fixtures/001/countries.yml
db/migrate/fixtures/002/users.yml
db/migrate/fixtures/003/bla.yml
db/migrate/fixtures/003/users.yml

So I just want the up method of a migration to check if there''s a 
directory with the corresponding migration number and any fixtures in 
it, and if so, to load them.

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Joshua Muheim wrote:
>> What do you exactly need to do before or after every migration?
>> 
>> create_table, maybe have something before and after ?
> 
> I''m working on a plugin that automatically loads some fixtures
according
> to every migration, something like
> 
> db/migrate/fixtures/001/countries.yml
> db/migrate/fixtures/002/users.yml
> db/migrate/fixtures/003/bla.yml
> db/migrate/fixtures/003/users.yml
> 
> So I just want the up method of a migration to check if there''s a 
> directory with the corresponding migration number and any fixtures in 
> it, and if so, to load them.
This might give you a idea how to do it :)

class A # ActiveRecord::Migration
  def self.create_table
    puts "create users"
  end
end

class Invoke < A  # Your own class which inherent 
ActiveRecord::Migration
  def self.create_table
    puts "-> Before"
    super
    self.after_table
  end
  def self.after_table
    puts "-> After"
  end
end


class CreateUsers < Invoke # This is your new class you would use to 
create migration, which will inherent Invoke
  def self.up
      create_table #create your stuff normal :)
  end
end

CreateUsers.up

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output:

-> Before
create users
-> After

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Thank you for your answer!

I remarked that your code only works when calling create_table in the 
self.up method. But I need it to work in any case, not depending on what 
I call in the self.up method.
As soon as self.up is called, it should execute before_up...

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