This is a usability change to fix a quirk from our definition of partial
writes. By default, we only persist changed attributes. When creating a
new record, this is assumed that the default values came from the
database. However, if the user provided a default, it will not be
persisted, since we didn't see it as "changed". Since this is a very
specific case, I wanted to isolate it with the other quirks that come
from user provided default values. The number of edge cases which are
presenting themselves are starting to make me wonder if we should just
remove the ability to assign a default, in favor of overriding
`initialize`. For the time being, this is required for the attributes
API to not have confusing behavior.
We had to delete one test, since this actually changes the meaning of
`.changed?` on Active Record models. It now specifically means
`changed_from_database?`. While I think this will make the attributes
API more ergonomic to use, it is a subtle change in definition (though
not a backwards incompatible one). We should probably figure out the
right place to document this. (Feel free to open a PR doing that if
you're reading this).
/cc @rafaelfranca @kirs @senny
This is an alternate implementation of #19921.
Close#19921.
[Sean Griffin & Kir Shatrov]
This is a variant implementation of the changes proposed in #19914.
Unlike that PR, the change in behavior is isolated in its own class.
This is to prevent wonky behavior if a Proc is assigned outside of the
default, and it is a natural place to place the behavior required by #19921
as well.
Close#19914.
[Sean Griffin & Kir Shatrov]
These methods had defined in 2004 by dhh in initial commit and `ActionDispatch::Request`
class has been inherited from `Rack::Request` class in 2009 by josh.
In 2014 these methods and more of them defined in `Rack::Request` class
so we don't need them anymore in rails codebase.
Set `config.static_index` to serve a static directory index file not
named `index`. For example, to serve `main.html` instead of `index.html`
for directory requests, set `config.static_index` to `"main"`.
Couldn't find other way to get the association name from a given class
other than looping through `reflect_on_all_associations` reflections ..
Noticed this one while looking at this example:
```ruby
class Product < ActiveRecord::Base
has_many :variants
has_many :translations
end
class Translation < ActiveRecord::Base
belongs_to :product
end
class Variant < ActiveRecord::Base
belongs_to :product
end
class BugTest < Minitest::Test
def test_merge_stuff
product = Product.create! name: 'huhu'
variant = Variant.create! product_id: product.id
Translation.create! locale: 'en', product_id: product.id
product_relation = Product.all
.preload(:translations)
.joins(:translations)
.merge(Translation.where(locale: 'en'))
.where(name: 'huhu')
assert_equal variant, Variant.joins(:product).merge(product_relation).first
end
end
```
Currently, values for columns backing Active Record enums must be
specified as integers in test fixtures:
awdr:
title: "Agile Web Development with Rails"
status: 2
rfr:
title: "Ruby for Rails"
status: <%= Book.statuses[:proposed] %>
This is potentially confusing, since enum values are typically
specified as symbols or strings in application code. To resolve the
confusion, this change permits the use of symbols or strings to specify
enum values:
awdr:
status: :published
It is compatible with fixtures that specify enum values as integers.
