Added find_all style to the new dynamic finders

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@308 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

@@ -10,6 +10,10 @@
   <tt>Person.find_first(["user_name = ? AND password = ?", user_name, password])</tt>, you just do 
   <tt>Person.find_by_user_name_and_password(user_name, password)</tt>.
 
+  While primarily a construct for easier find_firsts, it can also be used as a construct for find_all by using calls like 
+  <tt>Payment.find_all_by_amount(50)</tt> that is turned into <tt>Payment.find_all(["amount = ?", 50])</tt>. This is something not as equally useful,
+  though, as it's not possible to specify the order in which the objects are returned.
+
 * Added that Base#find takes an optional options hash, including :conditions. Base#find_on_conditions deprecated in favor of #find with :conditions #407 [bitsweat]
 
 * Added a db2 adapter that only depends on the Ruby/DB2 bindings (http://raa.ruby-lang.org/project/ruby-db2/) #386 [Maik Schmidt]

activerecord/lib/active_record/base.rb

@@ -108,6 +108,10 @@ module ActiveRecord #:nodoc:
   # <tt>Person.find_first(["user_name = ? AND password = ?", user_name, password])</tt>, you just do 
   # <tt>Person.find_by_user_name_and_password(user_name, password)</tt>.
   #
+  # While primarily a construct for easier find_firsts, it can also be used as a construct for find_all by using calls like 
+  # <tt>Payment.find_all_by_amount(50)</tt> that is turned into <tt>Payment.find_all(["amount = ?", 50])</tt>. This is something not as equally useful,
+  # though, as it's not possible to specify the order in which the objects are returned.
+  #
   # == Saving arrays, hashes, and other non-mappeable objects in text columns
   # 
   # Active Record can serialize any object in text columns using YAML. To do so, you must specify this with a call to the class method +serialize+. 
@@ -648,15 +652,16 @@ module ActiveRecord #:nodoc:
         end
 
         # Enables dynamic finders like find_by_user_name(user_name) and find_by_user_name_and_password(user_name, password) that are turned into 
-        # find_first(["user_name = ?", user_name]) and find_first(["user_name = ? AND password = ?", user_name, password]) respectively.
+        # find_first(["user_name = ?", user_name]) and find_first(["user_name = ? AND password = ?", user_name, password]) respectively. Also works
+        # for find_all, but using find_all_by_amount(50) that are turned into find_all(["amount = ?", 50]).
         def method_missing(method_id, *arguments)
           method_name = method_id.id2name
 
-          if method_name =~ /find_by_([_a-z]+)/
-            attributes = $1.split("_and_")
+          if method_name =~ /find_(all_by|by)_([_a-z]+)/
+            finder, attributes = ($1 == "all_by" ? :find_all : :find_first), $2.split("_and_")
             attributes.each { |attr_name| super unless column_methods_hash[attr_name.intern] }
             conditions = attributes.collect { |attr_name| "#{attr_name} = ? "}.join(" AND ")
-            find_first([conditions, *arguments])
+            send(finder, [conditions, *arguments])
           else
             super
           end

activerecord/test/finder_test.rb

@@ -178,6 +178,14 @@ class FinderTest < Test::Unit::TestCase
     assert_nil Topic.find_by_title_and_author_name("The First Topic", "Mary")
   end
 
+  def test_find_all_by_one_attribute
+    topics = Topic.find_all_by_content("Have a nice day")
+    assert_equal 2, topics.size
+    assert topics.include?(@topics["first"].find)
+
+    assert_equal [], Topic.find_all_by_title("The First Topic!!")
+  end
+
   protected
     def bind(statement, *vars)
       if vars.first.is_a?(Hash)

activerecord/test/fixtures/topics.yml

@@ -15,7 +15,7 @@ second:
   title: The Second Topic's of the day
   author_name: Mary
   written_on: 2003-07-15 15:28:00
-  content: Have a great day!
+  content: Have a nice day
   approved: 1
   replies_count: 2
   parent_id: 1