This is an alternate implementation to #22875, that generalizes a lot of
the logic that type decorators are going to need, in order to have them
work with arrays, ranges, etc. The types have the ability to map over a
value, with the default implementation being to just yield that given
value. Array and Range give more appropriate definitions.
This does not automatically make ranges time zone aware, as they need to
be added to the `time_zone_aware` types config, but we could certainly
make that change if we feel it is appropriate. I do think this would be
a breaking change however, and should at least have a deprecation cycle.
Closes#22875.
/cc @matthewd
You cannot use `update_attributes` on models that do not have a primary key. Since SchemaMigration versions are guaranteed to be unique (they have a unique index on them) we can safely use them as a primary key.
This PR introduces a key/value type store to Active Record that can be used for storing internal values. It is an alternative implementation to #21237 cc @sgrif @matthewd.
It is possible to run your tests against your production database by accident right now. While infrequently, but as an anecdotal data point, Heroku receives a non-trivial number of requests for a database restore due to this happening. In these cases the loss can be large.
To prevent against running tests against production we can store the "environment" version that was used when migrating the database in a new internal table. Before executing tests we can see if the database is a listed in `protected_environments` and abort. There is a manual escape valve to force this check from happening with environment variable `DISABLE_DATABASE_ENVIRONMENT_CHECK=1`.
While the option on `ActiveRecord::Base` is always around, we need to
explicitly set it on the config object. Otherwise the recommended
configuration change results in an error.
Fixes#22839
- `CONTROLLER` argument can now be supplied in different ways (Rails::WelcomeController, Rails::Welcome, rails/welcome)
- If `CONTROLLER` argument was supplied but it does not exist, will warn the user that this controller does not exist
- If `CONTROLLER` argument was supplied and no routes could be found matching this filter, will warn the user that no routes were found matching the supplied filter
- If no routes were defined in the config/routes.rb file, will warn the user with the original message
- The root method is defined and documented in Base module and
decorated in Resources module.
- The documentation in Base module actually talks about method
signature of decorated method from Resources module.
- Argument handling was moved to decorated method in
977455cc2e
to handle options such as :as with directly passed path parameter.
- To avoid the confusion, removed original root method from Base module
and only kept overridden version in Resources module.
- References - https://github.com/rails/rails/pull/12208 &
https://github.com/rails/rails/pull/12208#issuecomment-24350897.
- Earlier only Hash was allowed as params argument to url_helpers.
- Now ActionController::Parameters instances will also be allowed.
- If the params are not secured then it will raise an ArgumentError to
indicate that constructing URLs with non-secure params is not recommended.
- Fixes#22832.
In high volume applications it can be very difficult to figure out what is happening in logs because each request is not easily identified. For example 3 requests could look something like this:
```
Started GET "/" for 72.48.77.213 at 2016-01-06 20:30:21 +0000
Rendered welcome/index.html.erb within layouts/application (0.1ms)
Started GET "/" for 72.48.77.213 at 2016-01-06 20:30:22 +0000
Started GET "/" for 72.48.77.213 at 2016-01-06 20:30:23 +0000
Rendered welcome/index.html.erb within layouts/application (0.1ms)
Processing by WelcomeController#index as HTML
Completed 200 OK in 5ms (Views: 3.8ms | ActiveRecord: 0.0ms)
Processing by WelcomeController#index as HTML
Rendered welcome/index.html.erb within layouts/application (0.1ms)
Completed 200 OK in 5ms (Views: 3.8ms | ActiveRecord: 0.0ms)
Processing by WelcomeController#index as HTML
Completed 200 OK in 5ms (Views: 3.8ms | ActiveRecord: 0.0ms)
```
The `:request_id` log tag ensures that each request is tagged with a unique identifier. While they are still interleaved it is possible to figure out which lines belong to which requests. Like:
```
[c6034478-4026-4ded-9e3c-088c76d056f1] Started GET "/" for 72.48.77.213 at 2016-01-06 20:30:21 +0000
[c6034478-4026-4ded-9e3c-088c76d056f1] Rendered welcome/index.html.erb within layouts/application (0.1ms)
[abuqw781-5026-6ded-7e2v-788c7md0L6fQ] Started GET "/" for 72.48.77.213 at 2016-01-06 20:30:22 +0000
[acfab2a7-f1b7-4e15-8bf6-cdaa008d102c] Started GET "/" for 72.48.77.213 at 2016-01-06 20:30:23 +0000
[abuqw781-5026-6ded-7e2v-788c7md0L6fQ] Rendered welcome/index.html.erb within layouts/application (0.1ms)
[c6034478-4026-4ded-9e3c-088c76d056f1] Processing by WelcomeController#index as HTML
[c6034478-4026-4ded-9e3c-088c76d056f1] Completed 200 OK in 5ms (Views: 3.8ms | ActiveRecord: 0.0ms)
[abuqw781-5026-6ded-7e2v-788c7md0L6fQ] Processing by WelcomeController#index as HTML
[abuqw781-5026-6ded-7e2v-788c7md0L6fQ] Rendered welcome/index.html.erb within layouts/application (0.1ms)
[abuqw781-5026-6ded-7e2v-788c7md0L6fQ] Completed 200 OK in 5ms (Views: 3.8ms | ActiveRecord: 0.0ms)
[acfab2a7-f1b7-4e15-8bf6-cdaa008d102c] Processing by WelcomeController#index as HTML
[acfab2a7-f1b7-4e15-8bf6-cdaa008d102c] Completed 200 OK in 5ms (Views: 3.8ms | ActiveRecord: 0.0ms)
```
Now if you have the logs and you find this unique ID you can filter to only look at information from that request. So a filtered log output would be very clear:
```
[c6034478-4026-4ded-9e3c-088c76d056f1] Started GET "/" for 72.48.77.213 at 2016-01-06 20:30:21 +0000
[c6034478-4026-4ded-9e3c-088c76d056f1] Rendered welcome/index.html.erb within layouts/application (0.1ms)
[c6034478-4026-4ded-9e3c-088c76d056f1] Processing by WelcomeController#index as HTML
[c6034478-4026-4ded-9e3c-088c76d056f1] Completed 200 OK in 5ms (Views: 3.8ms | ActiveRecord: 0.0ms)
```
In addition to this benefit the `:request_id` can be set via the `X-Request-ID` header so that the same request could be traced between multiple components. For example a request comes in Nginx (or another load balancer) could assign a request id. As the load balancer processes the request I can log using that id, then when the request is passed on to Rails, the same id is used. That way if a problem is determined to be not caused in Rails it could be traced back to other components with the same ID. You can set a value in nginx for example using something like this:
```
location / {
proxy_pass http://upstream;
proxy_set_header X-Request-Id $pid-$msec-$remote_addr-$request_length;
}
# http://stackoverflow.com/questions/17748735/setting-a-trace-id-in-nginx-load-balancer
```
Heroku sets this header value so problems like timeouts that are logged by like router can be traced back to specific request within the application.
Whether you are using components that are setting request ID or not, all production applications can benefit from the additional debugging information of having a unique identifier for all requests. This change will only affect new applications, anyone can opt out by commenting or removing the line in `config/production.rb`.
When `rails console` or `rails server` are used along with a logger set to output to `STDOUT` then the contents will show up twice. This happens because the logger is extended with `ActiveSupportLogger.broadcast` with a destination of STDOUT even if it is already outputting to `STDOUT`.
Previously PR #22592 attempted to fix this issue, but it ended up causing NoMethodErrors. A better approach than relying on adding a method and flow control is to inspect the log destination directly. For this `ActiveSupport::Logger.logger_outputs_to?` was introduced
```ruby
logger = Logger.new(STDOUT)
ActiveSupport::Logger.logger_outputs_to?(logger, STDOUT)
# => true
```
To accomplish this we must look inside of an instance variable of standard lib's Logger `@logdev`. There is a related Ruby proposal to expose this method in a standard way: https://bugs.ruby-lang.org/issues/11955
