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Example:
# application routes.rb
mount BlogEngine => '/blog'
# engine routes.rb
get '/admin' => redirect('admin/dashboard')
This now redirects to the path `/blog/admin/dashboard`, whereas before it
would've generated an invalid url because there would be no slash between
the host name and the path. It also allows redirects to work where the
application is deployed to a subdirectory of a website.
Fixes #7977
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When you mount your application at a path, for example /myapp, server
should set SCRIPT_NAME to /myapp. With such information, rails
application knows that it's mounted at /myapp path and it should generate
routes relative to that path.
Before this patch, rails handled SCRIPT_NAME correctly only for regular
apps, but it failed to do it for mounted engines. The solution was to
hardcode default_url_options[:script_name], which is not the best answer
- it will work only when application is mounted at a fixed path.
This patch fixes the situation by respecting original value of
SCRIPT_NAME when generating application's routes from engine and the
other way round - when you generate engine's routes from application.
This is done by using one of 2 pieces of information in env - current
SCRIPT_NAME or SCRIPT_NAME for a corresponding router. This is because
we have 2 cases to handle:
- generating engine's route from application: in this situation
SCRIPT_NAME is basically SCRIPT_NAME set by the server and it
indicates the place where application is mounted, so we can just pass
it as :original_script_name in url_options. :original_script_name is
used because if we use :script_name, router will ignore generating
prefix for engine
- generating application's route from engine: in this situation we
already lost information about the SCRIPT_NAME that server used. For
example if application is mounted at /myapp and engine is mounted at
/blog, at this point SCRIPT_NAME is equal /myapp/blog. Because of that
we need to keep reference to /myapp SCRIPT_NAME by binding it to the
current router. Later on we can extract it and use when generating url
Please note that starting from now you *should not* use
default_url_options[:script_name] explicitly if your server already
passes correct SCRIPT_NAME to rack env.
(closes #6933)
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In the current router DSL, using the +match+ DSL
method will match all verbs for the path to the
specified endpoint.
In the vast majority of cases, people are
currently using +match+ when they actually mean
+get+. This introduces security implications.
This commit disallows calling +match+ without
an HTTP verb constraint by default. To explicitly
match all verbs, this commit also adds a
:via => :all option to +match+.
Closes #5964
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This brings back the ability to overwrite/extend url generating methods in application heleprs.
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Without that commit script_name always become '/', which
results in paths like //posts/1 instead of /posts/1
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not DRY
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mounted_helpers are a bit similar to url_helpers. They're automatically
included in controllers for Rails.application and each of mounted
Engines. Mounted helper allows to call url_for and named helpers for
given application.
Given Blog::Engine mounted as blog_engine, there are 2 helpers defined:
app and blog_engine. You can call routes for app and engine using those
helpers:
app.root_url
app.url_for(:controller => "foo")
blog_engine.posts_path
blog_engine.url_for(@post)
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* added more tests for prefix generation
* fixed bug with generating host for both prefix and url
* refactored url_for method
* organized tests for prefix generation
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regular class with default_url_options[:script_name] set
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It's based specifying application's script_name with:
Rails.application.default_url_options = {:script_name => "/foo"}
default_url_options method is delegated to routes. If router
used to generate url differs from the router passed via env
it always overwrites :script_name with this value.
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This requires knowledge about original SCRIPT_NAME and
the parent router. It should be pass through the env
as ORIGIAL_SCRIPT_NAME and action_dispatch.parent_routes
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or not.
This technique is here to allow using routes from Engine in Application
and vice versa. When using Engine routes inside Application it should
generate prefix based on mount point. When using Engine routes inside
Engine it should use env['SCRIPT_NAME']. In any other case it should
generate prefix as env should not be even available.
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