- Fixtures with non-string labels such as integers should be accessed
using integer label as key. For eg. pirates(1) or pirates(42).
- But this results in NotFound error because the label is converted into string before
looking up into the fixtures hash.
- After this commit, the label is converted into string only if its a
symbol.
- This issue was fount out while adding a test case for
https://github.com/rails/rails/commit/7b910917.
Before this change we had a small set of "truthy", and all others
are "falsy".
Now, we have a small set of "falsy" values and all others are
"truthy" matching Ruby's semantics.
Before this change any error raised inside a transaction callback
are rescued and printed in the logs.
Now these errors are not rescue anymore and just bubble up,
as the other callbacks.
This stems from [a comment](rails#17227 (comment)) by @dhh.
In summary:
* New Rails 5.0 apps will not accept `return false` as a way to halt callback chains, and will not display a deprecation warning.
* Existing apps ported to Rails 5.0 will still accept `return false` as a way to halt callback chains, albeit with a deprecation warning.
For this purpose, this commit introduces a Rails configuration option:
```ruby
config.active_support.halt_callback_chains_on_return_false
```
For new Rails 5.0 apps, this option will be set to `false` by a new initializer
`config/initializers/callback_terminator.rb`:
```ruby
Rails.application.config.active_support.halt_callback_chains_on_return_false = false
```
For existing apps ported to Rails 5.0, the initializers above will not exist.
Even running `rake rails:update` will not create this initializer.
Since the default value of `halt_callback_chains_on_return_false` is set to
`true`, these apps will still accept `return true` as a way to halt callback
chains, displaying a deprecation warning.
Developers will be able to switch to the new behavior (and stop the warning)
by manually adding the line above to their `config/application.rb`.
A gist with the suggested release notes to add to Rails 5.0 after this
commit is available at https://gist.github.com/claudiob/614c59409fb7d11f2931
Before this commit, returning `false` in an ActiveRecord `before_` callback
such as `before_create` would halt the callback chain.
After this commit, the behavior is deprecated: will still work until
the next release of Rails but will also display a deprecation warning.
The preferred way to halt a callback chain is to explicitly `throw(:abort)`.
Add setting of FK for throgh associations while building
Conflicts:
activerecord/CHANGELOG.md
activerecord/test/cases/associations/has_many_through_associations_test.rb
Incompatible to rounding behavior between MySQL 5.6 and earlier.
In 5.5, when you insert `2014-08-17 12:30:00.999999` the fractional part
is ignored. In 5.6, it's rounded to `2014-08-17 12:30:01`:
http://bugs.mysql.com/bug.php?id=68760
This error only happens when the foreign key is missing.
Before this fix the following exception was being raised:
NoMethodError: undefined method `val' for #<Arel::Nodes::BindParam:0x007fc64d19c218>
Now the message is:
ActiveRecord::UnknownAttributeError: unknown attribute 'foreign_key' for Model.
When table has a composite primary key, the `primary_key` method for
sqlite3 and postgresql was only returning the first field of the key.
Ensures that it will return nil instead, as AR dont support composite pks.
We only support classes which provide a no-args constructor to use as a
default value. We can provide a more helpful error message if we catch
this when `serialize` is called, rather than letting it error when you
try to assign the attribute.
Fixes#18224
