| Commit message (Collapse) | Author | Age | Files | Lines |
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Since Rails 6.0 will support Ruby 2.4.1 or higher
`# frozen_string_literal: true` magic comment is enough to make string object frozen.
This magic comment is enabled by `Style/FrozenStringLiteralComment` cop.
* Exclude these files not to auto correct false positive `Regexp#freeze`
- 'actionpack/lib/action_dispatch/journey/router/utils.rb'
- 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb'
It has been fixed by https://github.com/rubocop-hq/rubocop/pull/6333
Once the newer version of RuboCop released and available at Code Climate these exclude entries should be removed.
* Replace `String#freeze` with `String#-@` manually if explicit frozen string objects are required
- 'actionpack/test/controller/test_case_test.rb'
- 'activemodel/test/cases/type/string_test.rb'
- 'activesupport/lib/active_support/core_ext/string/strip.rb'
- 'activesupport/test/core_ext/string_ext_test.rb'
- 'railties/test/generators/actions_test.rb'
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This reverts commit 3420a14590c0e6915d8b6c242887f74adb4120f9, reversing
changes made to afb66a5a598ce4ac74ad84b125a5abf046dcf5aa.
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Mainly around `nil`
[ci skip]
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The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.
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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](https://github.com/schneems/let_it_go/blob/b0e2da69f0cca87ab581022baa43291cdf48638c/lib/let_it_go/core_ext/string.rb#L37) please [give me a pull request to the appropriate file](https://github.com/schneems/let_it_go/blob/b0e2da69f0cca87ab581022baa43291cdf48638c/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
![](https://www.dropbox.com/s/z4dj9fdsv213r4v/let-it-go.gif?dl=1)
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The documentation on `:on` for validations was inconsistent, and most
only referenced the `:create` and `:update` contexts. I fixed those to
be consistent with the documentation on `AM::Validations.validates`,
which seemed to have the best docs.
[ci skip]
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& Xavier Noria]
Closes #11247.
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different from the regex in EmailValidator
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I also attempted to fix other styleguide violations such as
{ a: :b } over {a: :b} and foo(b: 'bar') over foo( b: 'bar' ).
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Passing a falsey option value for a validator currently causes that validator to
be enabled, just like "true":
ActiveModel.validates :foo, :presence => false
This is rather counterintuitive, and makes it inconvenient to wrap `validates` in
methods which may conditionally enable different validators.
As an example, one is currently forced to write:
def has_slug(source_field, options={:unique => true})
slugger = Proc.new { |r| r[:slug] = self.class.sluggify(r[source_field]) if r[:slug].blank? }
before_validation slugger
validations = { :presence => true, :slug => true }
if options[:unique]
validations[:uniqueness] = true
end
validates :slug, validations
end
because the following reasonable-looking alternative fails to work as expected:
def has_slug(source_field, options={:unique => true})
slugger = Proc.new { |r| r[:slug] = self.class.sluggify(r[source_field]) if r[:slug].blank? }
before_validation slugger
validates :slug, :presence => true, :slug => true, :uniqueness => options[:unique]
end
(This commit includes a test, and all activemodel and activerecord tests pass as before.)
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In order to deliver debug information to dev team
instead of display error message to end user
Implemented strict validation concept
that suppose to define validation that always raise exception when fails
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Includes test and documentation for new feature
Signed-off-by: Santiago Pastorino <santiago@wyeworks.com>
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Signed-off-by: José Valim <jose.valim@gmail.com>
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's/[ \t]*$//' -i {} \;)
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validates :email, :presence => true, :format => /@/
validates :genre, :inclusion => %w(m f)
validates :password, :length => 6..20
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validates.
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attributes:
class Person < ActiveRecord::Base
include MyValidators
validates :name, :presence => true, :uniqueness => true, :length => { :maximum => 100 }
validates :email, :presence => true, :email => true
end
[#3058 status:resolved]
Signed-off-by: José Valim <jose.valim@gmail.com>
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