Removed support for deprecated `finder_sql` in associations.

9 files changed, 10 insertions, 197 deletions

diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index c71ba85580..85aad0d82f 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   Removed support for deprecated `finder_sql` in associations.
+
+    *Neeraj Singh*
+
 *   Support array as root element in JSON fields.
 
     *Alexey Noskov & Francesco Rodriguez*
diff --git a/activerecord/lib/active_record/associations/builder/collection_association.rb b/activerecord/lib/active_record/associations/builder/collection_association.rb
index 69627893c8..5eb11f98c8 100644
--- a/activerecord/lib/active_record/associations/builder/collection_association.rb
+++ b/activerecord/lib/active_record/associations/builder/collection_association.rb
@@ -8,7 +8,7 @@ module ActiveRecord::Associations::Builder
     CALLBACKS = [:before_add, :after_add, :before_remove, :after_remove]
 
     def valid_options
-      super + [:table_name, :finder_sql, :before_add,
+      super + [:table_name, :before_add,
                :after_add, :before_remove, :after_remove, :extend]
     end
 
diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb
index acc7b35e46..5bcd31cca0 100644
--- a/activerecord/lib/active_record/associations/collection_association.rb
+++ b/activerecord/lib/active_record/associations/collection_association.rb
@@ -44,7 +44,7 @@ module ActiveRecord
 
       # Implements the ids reader method, e.g. foo.item_ids for Foo.has_many :items
       def ids_reader
-        if loaded? || options[:finder_sql]
+        if loaded?
           load_target.map do |record|
             record.send(reflection.association_primary_key)
           end
@@ -79,9 +79,7 @@ module ActiveRecord
         if block_given?
           load_target.find(*args) { |*block_args| yield(*block_args) }
         else
-          if options[:finder_sql]
-            find_by_scan(*args)
-          elsif options[:inverse_of] && loaded?
+          if options[:inverse_of] && loaded?
             args = args.flatten
             raise RecordNotFound, "Couldn't find #{scope.klass.name} without an ID" if args.blank?
 
@@ -197,19 +195,11 @@ module ActiveRecord
         end
       end
 
-      # Count all records using SQL. If the +:finder_sql+ option is set for the
-      # association, it will be used for the query. Otherwise, construct options and pass them with
+      # Count all records using SQL.  Construct options and pass them with
       # scope to the target class's +count+.
       def count(column_name = nil, count_options = {})
         column_name, count_options = nil, column_name if column_name.is_a?(Hash)
 
-        if options[:finder_sql]
-          unless count_options.blank?
-            raise ArgumentError, "If finder_sql is used then options cannot be passed"
-          end
-
-          reflection.klass.count_by_sql(custom_counter_sql)
-        else
           relation = scope
           if association_scope.distinct_value
             # This is needed because 'SELECT count(DISTINCT *)..' is not valid SQL.
@@ -227,7 +217,6 @@ module ActiveRecord
           else
             value
           end
-        end
       end
 
       # Removes +records+ from this association calling +before_remove+ and
@@ -361,7 +350,6 @@ module ActiveRecord
           if record.new_record?
             include_in_memory?(record)
           else
-            load_target if options[:finder_sql]
             loaded? ? target.include?(record) : scope.exists?(record)
           end
         else
@@ -406,27 +394,8 @@ module ActiveRecord
 
       private
 
-        def custom_counter_sql
-          # replace the SELECT clause with COUNT(SELECTS), preserving any hints within /* ... */
-          interpolate(options[:finder_sql]).sub(/SELECT\b(\/\*.*?\*\/ )?(.*)\bFROM\b/im) do
-            count_with = $2.to_s
-            count_with = '*' if count_with.blank? || count_with =~ /,/ || count_with =~ /\.\*/
-            "SELECT #{$1}COUNT(#{count_with}) FROM"
-          end
-        end
-
-        def custom_finder_sql
-          interpolate(options[:finder_sql])
-        end
-
         def find_target
-          records =
-            if options[:finder_sql]
-              reflection.klass.find_by_sql(custom_finder_sql)
-            else
-              scope.to_a
-            end
-
+          records = scope.to_a
           records.each { |record| set_inverse_instance(record) }
           records
         end
@@ -565,7 +534,6 @@ module ActiveRecord
         # Otherwise, go to the database only if none of the following are true:
         #   * target already loaded
         #   * owner is new record
-        #   * custom :finder_sql exists
         #   * target contains new or changed record(s)
         #   * the first arg is an integer (which indicates the number of records to be returned)
         def fetch_first_or_last_using_find?(args)
@@ -574,7 +542,6 @@ module ActiveRecord
           else
             !(loaded? ||
               owner.new_record? ||
-              options[:finder_sql] ||
               target.any? { |record| record.new_record? || record.changed? } ||
               args.first.kind_of?(Integer))
           end
@@ -591,7 +558,7 @@ module ActiveRecord
           end
         end
 
-        # If using a custom finder_sql or if the :inverse_of option has been
+        # If the :inverse_of option has been
         # specified, then #find scans the entire collection.
         def find_by_scan(*args)
           expects_array = args.first.kind_of?(Array)
diff --git a/activerecord/lib/active_record/associations/has_many_association.rb b/activerecord/lib/active_record/associations/has_many_association.rb
index b632b0dfed..36d81a7402 100644
--- a/activerecord/lib/active_record/associations/has_many_association.rb
+++ b/activerecord/lib/active_record/associations/has_many_association.rb
@@ -58,8 +58,6 @@ module ActiveRecord
         def count_records
           count = if has_cached_counter?
             owner.send(:read_attribute, cached_counter_attribute_name)
-          elsif options[:finder_sql]
-            reflection.klass.count_by_sql(custom_counter_sql)
           else
             scope.count
           end
diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
index 7862fe3bf4..3ff1aeb7fe 100644
--- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
@@ -524,25 +524,6 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
     assert ! project.developers.include?(developer)
   end
 
-  def test_find_in_association_with_custom_finder_sql
-    assert_equal developers(:david), projects(:active_record).developers_with_finder_sql.find(developers(:david).id), "SQL find"
-
-    active_record = projects(:active_record)
-    active_record.developers_with_finder_sql.reload
-    assert_equal developers(:david), active_record.developers_with_finder_sql.find(developers(:david).id), "Ruby find"
-  end
-
-  def test_find_in_association_with_custom_finder_sql_and_multiple_interpolations
-    # interpolate once:
-    assert_equal [developers(:david), developers(:jamis), developers(:poor_jamis)], projects(:active_record).developers_with_finder_sql, "first interpolation"
-    # interpolate again, for a different project id
-    assert_equal [developers(:david)], projects(:action_controller).developers_with_finder_sql, "second interpolation"
-  end
-
-  def test_find_in_association_with_custom_finder_sql_and_string_id
-    assert_equal developers(:david), projects(:active_record).developers_with_finder_sql.find(developers(:david).id.to_s), "SQL find"
-  end
-
   def test_find_with_merged_options
     assert_equal 1, projects(:active_record).limited_developers.size
     assert_equal 1, projects(:active_record).limited_developers.to_a.size
@@ -778,13 +759,6 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
     assert_equal 2, david.projects.count
   end
 
-  unless current_adapter?(:PostgreSQLAdapter)
-    def test_count_with_finder_sql
-      assert_equal 3, projects(:active_record).developers_with_finder_sql.count
-      assert_equal 3, projects(:active_record).developers_with_multiline_finder_sql.count
-    end
-  end
-
   def test_association_proxy_transaction_method_starts_transaction_in_association_class
     Post.expects(:transaction)
     Category.first.posts.transaction do
diff --git a/activerecord/test/cases/associations/has_many_associations_test.rb b/activerecord/test/cases/associations/has_many_associations_test.rb
index 42e140a831..3187156db6 100644
--- a/activerecord/test/cases/associations/has_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_associations_test.rb
@@ -23,66 +23,6 @@ require 'models/categorization'
 require 'models/minivan'
 require 'models/speedometer'
 
-class HasManyAssociationsTestForCountWithFinderSql < ActiveRecord::TestCase
-  class Invoice < ActiveRecord::Base
-    ActiveSupport::Deprecation.silence do
-      has_many :custom_line_items, :class_name => 'LineItem', :finder_sql => "SELECT line_items.* from line_items"
-    end
-  end
-  def test_should_fail
-    assert_raise(ArgumentError) do
-      Invoice.create.custom_line_items.count(:conditions => {:amount => 0})
-    end
-  end
-end
-
-class HasManyAssociationsTestForCountWithVariousFinderSqls < ActiveRecord::TestCase
-  class Invoice < ActiveRecord::Base
-    ActiveSupport::Deprecation.silence do
-      has_many :custom_line_items, :class_name => 'LineItem', :finder_sql => "SELECT DISTINCT line_items.amount from line_items"
-      has_many :custom_full_line_items, :class_name => 'LineItem', :finder_sql => "SELECT line_items.invoice_id, line_items.amount from line_items"
-      has_many :custom_star_line_items, :class_name => 'LineItem', :finder_sql => "SELECT * from line_items"
-      has_many :custom_qualified_star_line_items, :class_name => 'LineItem', :finder_sql => "SELECT line_items.* from line_items"
-    end
-  end
-
-  def test_should_count_distinct_results
-    invoice = Invoice.new
-    invoice.custom_line_items << LineItem.new(:amount => 0)
-    invoice.custom_line_items << LineItem.new(:amount => 0)
-    invoice.save!
-
-    assert_equal 1, invoice.custom_line_items.count
-  end
-
-  def test_should_count_results_with_multiple_fields
-    invoice = Invoice.new
-    invoice.custom_full_line_items << LineItem.new(:amount => 0)
-    invoice.custom_full_line_items << LineItem.new(:amount => 0)
-    invoice.save!
-
-    assert_equal 2, invoice.custom_full_line_items.count
-  end
-
-  def test_should_count_results_with_star
-    invoice = Invoice.new
-    invoice.custom_star_line_items << LineItem.new(:amount => 0)
-    invoice.custom_star_line_items << LineItem.new(:amount => 0)
-    invoice.save!
-
-    assert_equal 2, invoice.custom_star_line_items.count
-  end
-
-  def test_should_count_results_with_qualified_star
-    invoice = Invoice.new
-    invoice.custom_qualified_star_line_items << LineItem.new(:amount => 0)
-    invoice.custom_qualified_star_line_items << LineItem.new(:amount => 0)
-    invoice.save!
-
-    assert_equal 2, invoice.custom_qualified_star_line_items.count
-  end
-end
-
 class HasManyAssociationsTestForReorderWithJoinDependency < ActiveRecord::TestCase
   fixtures :authors, :posts, :comments
 
@@ -352,26 +292,6 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
     assert_equal "Summit", Firm.all.merge!(:order => "id").first.clients_using_primary_key.first.name
   end
 
-  def test_finding_using_sql
-    firm = Firm.order("id").first
-    first_client = firm.clients_using_sql.first
-    assert_not_nil first_client
-    assert_equal "Microsoft", first_client.name
-    assert_equal 1, firm.clients_using_sql.size
-    assert_equal 1, Firm.order("id").first.clients_using_sql.size
-  end
-
-  def test_finding_using_sql_take_into_account_only_uniq_ids
-    firm = Firm.order("id").first
-    client = firm.clients_using_sql.first
-    assert_equal client, firm.clients_using_sql.find(client.id, client.id)
-    assert_equal client, firm.clients_using_sql.find(client.id, client.id.to_s)
-  end
-
-  def test_counting_using_finder_sql
-    assert_equal 2, Firm.find(4).clients_using_sql.count
-  end
-
   def test_belongs_to_sanity
     c = Client.new
     assert_nil c.firm
@@ -399,22 +319,6 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
     assert_raise(ActiveRecord::RecordNotFound) { firm.clients.find(2, 99) }
   end
 
-  def test_find_string_ids_when_using_finder_sql
-    firm = Firm.order("id").first
-
-    client = firm.clients_using_finder_sql.find("2")
-    assert_kind_of Client, client
-
-    client_ary = firm.clients_using_finder_sql.find(["2"])
-    assert_kind_of Array, client_ary
-    assert_equal client, client_ary.first
-
-    client_ary = firm.clients_using_finder_sql.find("2", "3")
-    assert_kind_of Array, client_ary
-    assert_equal 2, client_ary.size
-    assert_equal true, client_ary.include?(client)
-  end
-
   def test_find_all
     firm = Firm.all.merge!(:order => "id").first
     assert_equal 2, firm.clients.where("#{QUOTED_TYPE} = 'Client'").to_a.length
@@ -1324,13 +1228,6 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
     assert_equal [readers(:michael_welcome).id], posts(:welcome).readers_with_person_ids
   end
 
-  def test_get_ids_for_unloaded_finder_sql_associations_loads_them
-    company = companies(:first_firm)
-    assert !company.clients_using_sql.loaded?
-    assert_equal [companies(:second_client).id], company.clients_using_sql_ids
-    assert company.clients_using_sql.loaded?
-  end
-
   def test_get_ids_for_ordered_association
     assert_equal [companies(:second_client).id, companies(:first_client).id], companies(:first_firm).clients_ordered_by_name_ids
   end
@@ -1418,17 +1315,6 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
     assert ! firm.clients.loaded?
   end
 
-  def test_include_loads_collection_if_target_uses_finder_sql
-    firm = companies(:first_firm)
-    client = firm.clients_using_sql.first
-
-    firm.reload
-    assert ! firm.clients_using_sql.loaded?
-    assert_equal true, firm.clients_using_sql.include?(client)
-    assert firm.clients_using_sql.loaded?
-  end
-
-
   def test_include_returns_false_for_non_matching_record_to_verify_scoping
     firm = companies(:first_firm)
     client = Client.create!(:name => 'Not Associated')
diff --git a/activerecord/test/models/company.rb b/activerecord/test/models/company.rb
index 12fb183bb3..bc50578759 100644
--- a/activerecord/test/models/company.rb
+++ b/activerecord/test/models/company.rb
@@ -48,10 +48,6 @@ class Firm < Company
   has_many :clients_with_interpolated_conditions, ->(firm) { where "rating > #{firm.rating}" }, :class_name => "Client"
   has_many :clients_like_ms, -> { where("name = 'Microsoft'").order("id") }, :class_name => "Client"
   has_many :clients_like_ms_with_hash_conditions, -> { where(:name => 'Microsoft').order("id") }, :class_name => "Client"
-  ActiveSupport::Deprecation.silence do
-    has_many :clients_using_sql, :class_name => "Client", :finder_sql => proc { "SELECT * FROM companies WHERE client_of = #{id}" }
-    has_many :clients_using_finder_sql, :class_name => "Client", :finder_sql => 'SELECT * FROM companies WHERE 1=1'
-  end
   has_many :plain_clients, :class_name => 'Client'
   has_many :readonly_clients, -> { readonly }, :class_name => 'Client'
   has_many :clients_using_primary_key, :class_name => 'Client',
diff --git a/activerecord/test/models/company_in_module.rb b/activerecord/test/models/company_in_module.rb
index 461bb0de09..38b0b6aafa 100644
--- a/activerecord/test/models/company_in_module.rb
+++ b/activerecord/test/models/company_in_module.rb
@@ -10,10 +10,6 @@ module MyApplication
       has_many :clients_sorted_desc, -> { order("id DESC") }, :class_name => "Client"
       has_many :clients_of_firm, -> { order "id" }, :foreign_key => "client_of", :class_name => "Client"
       has_many :clients_like_ms, -> { where("name = 'Microsoft'").order("id") }, :class_name => "Client"
-      ActiveSupport::Deprecation.silence do
-        has_many :clients_using_sql, :class_name => "Client", :finder_sql => 'SELECT * FROM companies WHERE client_of = #{id}'
-      end
-
       has_one :account, :class_name => 'MyApplication::Billing::Account', :dependent => :destroy
     end
 
diff --git a/activerecord/test/models/project.rb b/activerecord/test/models/project.rb
index f893754b9f..9e8e3e04d2 100644
--- a/activerecord/test/models/project.rb
+++ b/activerecord/test/models/project.rb
@@ -9,14 +9,6 @@ class Project < ActiveRecord::Base
   has_and_belongs_to_many :salaried_developers, -> { where "salary > 0" }, :class_name => "Developer"
 
   ActiveSupport::Deprecation.silence do
-    has_and_belongs_to_many :developers_with_finder_sql, :class_name => "Developer", :finder_sql => proc { "SELECT t.*, j.* FROM developers_projects j, developers t WHERE t.id = j.developer_id AND j.project_id = #{id} ORDER BY t.id" }
-    has_and_belongs_to_many :developers_with_multiline_finder_sql, :class_name => "Developer", :finder_sql => proc {
-      "SELECT
-         t.*, j.*
-       FROM
-         developers_projects j,
-         developers t WHERE t.id = j.developer_id AND j.project_id = #{id} ORDER BY t.id"
-    }
     has_and_belongs_to_many :developers_by_sql, :class_name => "Developer", :delete_sql => proc { |record| "DELETE FROM developers_projects WHERE project_id = #{id} AND developer_id = #{record.id}" }
   end