This reverts commit ed1eda271c7ac82ecb7bd94b6fa1b0093e648a3e, reversing
changes made to 3d2caab7dc92a13d4dd369678d5b4ce659df8e52.
Reason: 7c3da6e0030aa080fcb89af58b094ed50d861a44
#33729 affected the behavior of the has_many through record creation.
Since #33729, the intermediate reflection of simple has_many through
association has `inverse_of` to the association, it causes extra through
record creation, the extra through record required valid before the
association record is saved.
2312537867/activerecord/lib/active_record/associations/has_many_through_association.rb (L95-L102)
I think that #33729 need to more work to care about has_many through
association, that PR should be reverted to not break existing apps.
ActiveSupport overrides `` Kernel#` `` so that it would not raise
`Errno::ENOENT` but return `nil` instead (due to the last statement
`STDERR.puts` returning nil) if a given command were not found.
Because of this, you cannot safely say somthing like
`` `command`.chomp `` when ActiveSupport is loaded.
It turns out that this is an outdated monkey patch for Windows
platforms to emulate Unix behavior on an ancient version of Ruby, and
it should be removed by now.
This fixes following warning.
```
warning: Passing safe_level with the 2nd argument of ERB.new is deprecated. Do not use it, and specify other arguments as keyword arguments.
```
We need to update using the timestamp from the end of the request, not
the start. For example, if a request spends 5+ seconds writing, we still
want to wait another 5 seconds for replication lag.
Since we now run the update after we yield, we need to use ensure to
make sure we update the timestamp even if there is an exception.
The following PR adds behavior to Rails to allow an application to
automatically switch it's connection from the primary to the replica.
A request will be sent to the replica if:
* The request is a read request (`GET` or `HEAD`)
* AND It's been 2 seconds since the last write to the database (because
we don't want to send a user to a replica if the write hasn't made it
to the replica yet)
A request will be sent to the primary if:
* It's not a GET/HEAD request (ie is a POST, PATCH, etc)
* Has been less than 2 seconds since the last write to the database
The implementation that decides when to switch reads (the 2 seconds) is
"safe" to use in production but not recommended without adequate testing
with your infrastructure. At GitHub in addition to the a 5 second delay
we have a curcuit breaker that checks the replication delay
and will send the query to a replica before the 5 seconds has passed.
This is specific to our application and therefore not something Rails
should be doing for you. You'll need to test and implement more robust
handling of when to switch based on your infrastructure. The auto
switcher in Rails is meant to be a basic implementation / API that acts
as a guide for how to implement autoswitching.
The impementation here is meant to be strict enough that you know how to
implement your own resolver and operations classes but flexible enough
that we're not telling you how to do it.
The middleware is not included automatically and can be installed in
your application with the classes you want to use for the resolver and
operations passed in. If you don't pass any classes into the middleware
the Rails default Resolver and Session classes will be used.
The Resolver decides what parameters define when to
switch, Operations sets timestamps for the Resolver to read from. For
example you may want to use cookies instead of a session so you'd
implement a Resolver::Cookies class and pass that into the middleware
via configuration options.
```
config.active_record.database_selector = { delay: 2.seconds }
config.active_record.database_resolver = MyResolver
config.active_record.database_operations = MyResolver::MyCookies
```
Your classes can inherit from the existing classes and reimplment the
methods (or implement more methods) that you need to do the switching.
You only need to implement methods that you want to change. For example
if you wanted to set the session token for the last read from a replica
you would reimplement the `read_from_replica` method in your resolver
class and implement a method that updates a new timestamp in your
operations class.
Previously if the `url` key in a config hash was nil we'd ignore the
configuration as invalid. This can happen when you're relying on a
`DATABASE_URL` in the env and that is not set in the environment.
```
production:
<<: *default
url: ENV['DATABASE_URL']
```
This PR fixes that case by checking if there is a `url` key in the
config instead of checking if the `url` is not nil in the config.
In addition to changing the conditional we then need to build a url hash
to merge with the original hash in the `UrlConfig` object.
Fixes#35091
- Remove `fragment_cache_key` helper declaration.
It was removed in e70d3df7c9b05c129b0fdcca57f66eca316c5cfc
- Remove `by_private_lifo`.
It is unused since a7becf147afc85c354e5cfa519911a948d25fc4d
But `NameError: uninitialized constant ActionDispatch::SystemTesting::Browser::Selenium`
is pretty confused. I've little improved missing constant error to
`NameError: uninitialized constant Selenium`.
The AV::Base constructor was too complicated, and this commit tightens
up the parameters it will take. At runtime, AV::Base is most commonly
constructed here:
94d54fa4ab/actionview/lib/action_view/rendering.rb (L72-L74)
This provides an AV::Renderer instance, a hash of assignments, and a
controller instance. Since this is the common case for construction, we
should remove logic from the constructor that handles other cases. This
commit introduces special constructors for those other cases.
Interestingly, most code paths that construct AV::Base "strangely" are
tests.
This is a minor update to the named methods for the following:
- s/desired_capabilities/capabilities
- s/driver_options/capabilities
Since they are all the same thing we should keep the name the same
throughout the feature.
Updated docs to match / be a little bit clearer
Also updated the Gemfile for selenium-webdriver.
