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authorGonçalo Silva <goncalossilva@gmail.com>2011-03-30 03:24:20 +0100
committerGonçalo Silva <goncalossilva@gmail.com>2011-03-30 03:24:20 +0100
commitb8f9a4515682f2722dc6e8ff9c106f5f774e703b (patch)
tree4c8f2cdc516374b1856963d57dfdaeb212bb2153 /railties/guides
parent6212749bd48d84e79b728b128bc8a0eabb572106 (diff)
parent58becf116580c37c63b89f4a660ebe293f6e7c4e (diff)
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Merge branch 'master' of https://github.com/rails/rails into performance_test
Diffstat (limited to 'railties/guides')
-rw-r--r--railties/guides/source/active_record_querying.textile20
-rw-r--r--railties/guides/source/routing.textile12
2 files changed, 32 insertions, 0 deletions
diff --git a/railties/guides/source/active_record_querying.textile b/railties/guides/source/active_record_querying.textile
index 2c5d9e67e3..f3a10b8b92 100644
--- a/railties/guides/source/active_record_querying.textile
+++ b/railties/guides/source/active_record_querying.textile
@@ -962,6 +962,26 @@ Client.exists?
The above returns +false+ if the +clients+ table is empty and +true+ otherwise.
+You can also use +any?+ and +many?+ to check for existence on a model or relation.
+
+<ruby>
+# via a model
+Post.any?
+Post.many?
+
+# via a named scope
+Post.recent.any?
+Post.recent.many?
+
+# via a relation
+Post.where(:published => true).any?
+Post.where(:published => true).many?
+
+# via an association
+Post.first.categories.any?
+Post.first.categories.many?
+</ruby>
+
h3. Calculations
This section uses count as an example method in this preamble, but the options described apply to all sub-sections.
diff --git a/railties/guides/source/routing.textile b/railties/guides/source/routing.textile
index c447fd911a..58b75b9a1d 100644
--- a/railties/guides/source/routing.textile
+++ b/railties/guides/source/routing.textile
@@ -557,6 +557,18 @@ match '*a/foo/*b' => 'test#index'
would match +zoo/woo/foo/bar/baz+ with +params[:a]+ equals +"zoo/woo"+, and +params[:b]+ equals +"bar/baz"+.
+NOTE: Starting from Rails 3.1, wildcard route will always matching the optional format segment by default. For example if you have this route:
+
+<ruby>
+map '*pages' => 'pages#show'
+</ruby>
+
+NOTE: By requesting +"/foo/bar.json"+, your +params[:pages]+ will be equals to +"foo/bar"+ with the request format of JSON. If you want the old 3.0.x behavior back, you could supply +:format => false+ like this:
+
+<ruby>
+map '*pages' => 'pages#show', :format => false
+</ruby>
+
h4. Redirection
You can redirect any path to another path using the +redirect+ helper in your router: