Has anyone thought about having a fourth database, maybe called
template.  e.g. foo_template, foo_development, foo_test, and
foo_production.

The rake db:migrate would be done to the template database.  Then the
test and development would be initially populated from the template.

I am not sure if all databases have this ability.  I'm using
postgresql.  I can do:

createdb --template=foo_template foo_test

There are a couple of reasons.

First, if I add a procedural language to my development database, then
I can not create the test db without some sort of error unless I use
postgres as the user of the test database.  I'd prefer not to do
that.  Either using ruby or sql as the schema_format has
difficulties.  Using ruby, the constraints are not saved; using sql, I
get a couple of ugly warnings.

The second reason is my migrations add required data to the database.
Neither method of db:test:clone or db:test:clone_structure migrates
these entries.  Using fixtures solves this but then I need this same
fixture for all of my tests.

It also appears to be faster and dumping things to a file and sucking
them back up.

Perry


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