Example:
```ruby
class Person
include ActiveModel::Validations
attr_reader :name, :title
validates_presence_of :name, on: :create
validates_presence_of :title, on: :update
end
person = Person.new
person.valid?([:create, :update]) # => true
person.errors.messages # => {:name=>["can't be blank"], :title=>["can't be blank"]}
```
This reverts commit 51dd2588433457960cca592d5b5dac6e0537feac, reversing
changes made to ecb4e4b21b3222b823fa24d4a0598b1f2f63ecfb.
This broke Active Record tests
It was not expecting the new `case_insensitive` option to be passed to
`generate_message`, instead of fixing the test we can just not pass this
option down since it is specific to the confirmation validator and not
necessary for the error message.
Case :- 1. In case of email confirmation one needs case insensitive comparison
2. In case of password confirmation one needs case sensitive comparison
[ci skip] Update Guides for case_sensitive option in confirmation validation
Example:
```ruby
class Person
include ActiveModel::Validations
attr_reader :name, :title
validates_presence_of :name, on: :create
validates_presence_of :title, on: :update
end
person = Person.new
person.valid?([:create, :update]) # => true
person.errors.messages # => {:name=>["can't be blank"], :title=>["can't be blank"]}
```
I wrote a utility that helps find areas where you could optimize your program using a frozen string instead of a string literal, it's called [let_it_go](https://github.com/schneems/let_it_go). After going through the output and adding `.freeze` I was able to eliminate the creation of 1,114 string objects on EVERY request to [codetriage](codetriage.com). How does this impact execution?
To look at memory:
```ruby
require 'get_process_mem'
mem = GetProcessMem.new
GC.start
GC.disable
1_114.times { " " }
before = mem.mb
after = mem.mb
GC.enable
puts "Diff: #{after - before} mb"
```
Creating 1,114 string objects results in `Diff: 0.03125 mb` of RAM allocated on every request. Or 1mb every 32 requests.
To look at raw speed:
```ruby
require 'benchmark/ips'
number_of_objects_reduced = 1_114
Benchmark.ips do |x|
x.report("freeze") { number_of_objects_reduced.times { " ".freeze } }
x.report("no-freeze") { number_of_objects_reduced.times { " " } }
end
```
We get the results
```
Calculating -------------------------------------
freeze 1.428k i/100ms
no-freeze 609.000 i/100ms
-------------------------------------------------
freeze 14.363k (± 8.5%) i/s - 71.400k
no-freeze 6.084k (± 8.1%) i/s - 30.450k
```
Now we can do some maths:
```ruby
ips = 6_226k # iterations / 1 second
call_time_before = 1.0 / ips # seconds per iteration
ips = 15_254 # iterations / 1 second
call_time_after = 1.0 / ips # seconds per iteration
diff = call_time_before - call_time_after
number_of_objects_reduced * diff * 100
# => 0.4530373333993266 miliseconds saved per request
```
So we're shaving off 1 second of execution time for every 220 requests.
Is this going to be an insane speed boost to any Rails app: nope. Should we merge it: yep.
p.s. If you know of a method call that doesn't modify a string input such as [String#gsub](b0e2da69f0/lib/let_it_go/core_ext/string.rb (L37)) please [give me a pull request to the appropriate file](b0e2da69f0/lib/let_it_go/core_ext/string.rb (L37)), or open an issue in LetItGo so we can track and freeze more strings.
Keep those strings Frozen
[ci skip]
Closes#20792.
Custom validation methods are implemented in terms of
callbacks. The `validate` callback chain can't be halted using return
values of individual callbacks.
[ci skip]
While this :nodoc: did hide the constant it also removed the following
methods from the API docs:
- #attribute_method?
- #clear_validators!
- #validate
- #validators
- #validators_on
Those are public API and should be visible.
Issue was caused by dee4fbc
/cc @zzak
Only one constraint option can be used at a time (except for the minimum
and maximum ones that can eventually be combined). However, other
options can be used with them (e.g. the validation failure message).
So let's make the distinction between these two different options
categories.
[Yves Senn, Matthew Draper & Robin Dupret]
This adds a script `bin/test` to most Rails framework components. The
script uses the rails minitest plugin to augment the runner.
See https://github.com/rails/rails/pull/19571 for details about the
plugin.
I did not yet add `bin/test` for activerecord, activejob and railties.
These components rely on specific setup performed in the rake-tasks.
I think we are better off leaving `sudo` outside of the documented
way of installing gems (`activerecord`, `actionpack`, …).
We don’t want newbies to think that `sudo` is required or, even worse, than
they actually have to type `[sudo] gem install`.
In most scenarios, `sudo` is not needed to install gems, and people who do
need it, probably already know about it.
What do you think? 😁
The test was skipped because of an issue that, in the meantime,
has been fixed: https://github.com/rubinius/rubinius/issues/3328.
Using the latest Rubinius (the one currently on Travis CI), this
is the result:
```sh
$ ruby --version
rubinius 2.5.3 (2.1.0 2482b093 2015-05-10 3.5.1 JI) [x86_64-darwin14.3.0]
```
**Before this PR**
```sh
$ ruby -Itest test/cases/attribute_assignment_test.rb
Run options: --seed 58569
.....S...
Finished in 0.048278s, 186.4203 runs/s, 269.2738 assertions/s.
9 runs, 13 assertions, 0 failures, 0 errors, 1 skips
You have skipped tests. Run with --verbose for details.
```
**After this PR**
$ ruby -Itest test/cases/attribute_assignment_test.rb
Run options: --seed 35720
.........
Finished in 0.029441s, 305.6961 runs/s, 475.5273 assertions/s.
9 runs, 14 assertions, 0 failures, 0 errors, 0 skips
```
