fixtures in edge and polymorphic associations

rubyonrails-talk
1

Hello,

I've been using the fixture enhancements in edge rails to manage associations between objects. It has been working great except for polymorphic associations. I saw that they weren't supported in Rathole.

I read some post that the id's generated by the fixtures are constant so I just pulled the generated id's and manually set the polymorphic id and the polymorphic type in the fixture as well.

This worked great locally on my machine, but when I moved the application to a staging are the generated id's were different, breaking all of the associations.

Anyone have any better luck with another approach?

2

Hi Dan,

You can insert the generated ID for any fixture using ERB:

   foo:      bar_id: <%= Fixtures.identify(:the_target_fixture_label) %>

As far as polymorphic assoiations go, take a look at this patch: http://dev.rubyonrails.org/ticket/10183

~ j.

3

You actually don't need the patch to support polymorphic relationships.

The patch suggests this:

# instead of saying foo:   pet_id: 1 # a pet fixture labelled "horace"   pet_type: Ferret

# you can say foo:   pet: horace (Ferret)

But in fact you can do this:

foo:   pet: horace   pet_type: Ferret

This is good enough for me.

Tiago Macedo

John Barnette wrote:

4

Thanks for the replies.

I've been trying this syntax

foo:   pet: horace   pet_type: Ferret

and the relationship isn't resolving. This is in edge and I don't need a patch?

5

It's working for me in edge, as long as I don't specify ids for fixtures (currently this will disable foxy fixtures).

There is a patch in the Rails Trac that allows you to specify ids and still use foxy fixtures: http://dev.rubyonrails.org/ticket/10004/

As I need this patch and don't want to use a monkey patched version of Rails, I turned this into a plugin: http://portugueserb.rubyforge.org/svn/plugins/mixed_fixtures/

Tiago Macedo

Dan wrote: