| Commit message (Collapse) | Author | Age | Files | Lines |
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It used to behave like this:
url_for(controller: 'x', action: 'y', q: {})
# -> "/x/y?"
We previously avoided empty query strings in most cases by removing
nil values, then checking whether params was empty. But as you can
see above, even non-empty params can yield an empty query string. So
I changed the code to just directly check whether the query string
ended up empty.
(To make everything more consistent, the "removing nil values"
functionality should probably move to ActionPack's Hash#to_query, the
place where empty hashes and arrays get removed. However, this would
change a lot more behavior.)
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Just include the modules necessary in the Request object to implement
the things we need. This should make it easier to build delegate
request objects because the API is smaller
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Fix broken IPv6 addresses handling
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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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Previously, an empty X_FORWARDED_HOST header would cause
Actiondispatch::Http:URL.raw_host_with_port to return nil, causing
Actiondispatch::Http:URL.host to raise a NoMethodError.
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```ruby
article = Article.new.tap(&:save!)
view.url_for article
result = ObjectSpace::AllocationTracer.trace do
3000.times { view.url_for article }
end
p ObjectSpace::AllocationTracer.allocated_count_table[:T_STRING] / 3000
```
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Add docs for `extract_domain`, `extract_subdomains`, `extract_subdomain`.
Add doc examples for `url`, `protocol`, `raw_host_with_port`, `host`,
`host_with_port`, `port`, `standard_port`, `standard_port?`, `optional_port`,
`port_string`.
[ci skip]
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Fixes https://github.com/rails/rails/issues/17714.
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These methods mutate the path variable/argument so there is no need
to reassign it every time.
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since we know that the route should be a path or fully qualified, we can
pass a strategy object that handles generation. This allows us to
eliminate an "if only_path" branch when generating urls.
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Then we only need to extract host once.
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if the subdomain wasn't specified, it's the same as if specifying
:subdomain as `true`, so we can default the value to `true` safely.
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`normalize_host` already calls `named_host?`, so there is no reason to
test `named_host?` again in the `extract_domain` method.
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Before:
/Users/Juan/dev/rails/actionpack/lib/action_dispatch/http/url.rb:95: warning: shadowing outer local variable - port
After:
No warning
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extract_subdomain always returns a string, and to_param calls to_s on a
string
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irb(main):004:0> /foo/ !~ nil
=> true
irb(main):005:0> /foo/ !~ 'bar'
=> true
irb(main):006:0> /foo/ !~ 'foo'
=> false
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remove the default parameter since the methods are always called with a
parameter
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This reverts commit 79469b4b0c05a50e19699bc9b568042add2d4987.
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Fixes URL generation with trailing_slash: true
Conflicts:
actionpack/lib/action_dispatch/http/url.rb
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URL generation with trailing_slash: true was adding a trailing slash
after .:format
Routes.draw do
resources :bars
end
bars_url(trailing_slash: true, format: 'json')
# => /bars.json/
This commit removes that extra trailing slash
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