Merge pull request rails#26718 from domcleal/5-0-stable-ids-writer-exception

Restore RecordNotFound when *_ids= can't find records by ID

Author: matthewd

activerecord/CHANGELOG.md

@@ -1,3 +1,12 @@
+*   Raise ActiveRecord::RecordNotFound from collection `*_ids` setters
+    for unknown IDs with a better error message.
+
+    Changes the collection `*_ids` setters to cast provided IDs the data
+    type of the primary key set in the association, not the model
+    primary key.
+
+    *Dominic Cleal*
+
 *   For PostgreSQL >= 9.4 use `pgcrypto`'s `gen_random_uuid()` instead of
     `uuid-ossp`'s UUID generation function.
 

activerecord/lib/active_record/associations/collection_association.rb

@@ -68,13 +68,17 @@ def ids_reader
 
       # Implements the ids writer method, e.g. foo.item_ids= for Foo.has_many :items
       def ids_writer(ids)
-        pk_type = reflection.primary_key_type
+        pk_type = reflection.association_primary_key_type
         ids = Array(ids).reject(&:blank?)
         ids.map! { |i| pk_type.cast(i) }
         records = klass.where(reflection.association_primary_key => ids).index_by do |r|
           r.send(reflection.association_primary_key)
-        end.values_at(*ids)
-        replace(records)
+        end.values_at(*ids).compact
+        if records.size != ids.size
+          scope.raise_record_not_found_exception!(ids, records.size, ids.size, reflection.association_primary_key)
+        else
+          replace(records)
+        end
       end
 
       def reset

activerecord/lib/active_record/reflection.rb

@@ -397,6 +397,10 @@ def association_primary_key(klass = nil)
         options[:primary_key] || primary_key(klass || self.klass)
       end
 
+      def association_primary_key_type
+        klass.type_for_attribute(association_primary_key)
+      end
+
       def active_record_primary_key
         @active_record_primary_key ||= options[:primary_key] || primary_key(active_record)
       end

activerecord/lib/active_record/relation/finder_methods.rb

@@ -345,7 +345,7 @@ def exists?(conditions = :none)
     # of results obtained should be provided in the +result_size+ argument and
     # the expected number of results should be provided in the +expected_size+
     # argument.
-    def raise_record_not_found_exception!(ids = nil, result_size = nil, expected_size = nil) # :nodoc:
+    def raise_record_not_found_exception!(ids = nil, result_size = nil, expected_size = nil, key = primary_key) # :nodoc:
       conditions = arel.where_sql(@klass.arel_engine)
       conditions = " [#{conditions}]" if conditions
       name = @klass.name
@@ -355,10 +355,10 @@ def raise_record_not_found_exception!(ids = nil, result_size = nil, expected_siz
         error << " with#{conditions}" if conditions
         raise RecordNotFound.new(error, name)
       elsif Array(ids).size == 1
-        error = "Couldn't find #{name} with '#{primary_key}'=#{ids}#{conditions}"
-        raise RecordNotFound.new(error, name, primary_key, ids)
+        error = "Couldn't find #{name} with '#{key}'=#{ids}#{conditions}"
+        raise RecordNotFound.new(error, name, key, ids)
       else
-        error = "Couldn't find all #{name.pluralize} with '#{primary_key}': "
+        error = "Couldn't find all #{name.pluralize} with '#{key}': "
         error << "(#{ids.join(", ")})#{conditions} (found #{result_size} results, but was looking for #{expected_size})"
 
         raise RecordNotFound.new(error, name, primary_key, ids)

activerecord/test/cases/associations/has_many_through_associations_test.rb

@@ -883,10 +883,25 @@ def test_collection_singular_ids_setter_with_string_primary_keys
 
   end
 
+  def test_collection_singular_ids_setter_with_changed_primary_key
+    company = companies(:first_firm)
+    client = companies(:first_client)
+    company.clients_using_primary_key_ids = [client.name]
+    assert_equal [client], company.clients_using_primary_key
+  end
+
   def test_collection_singular_ids_setter_raises_exception_when_invalid_ids_set
     company = companies(:rails_core)
     ids = [Developer.first.id, -9999]
-    assert_raises(ActiveRecord::AssociationTypeMismatch) { company.developer_ids = ids }
+    e = assert_raises(ActiveRecord::RecordNotFound) { company.developer_ids = ids }
+    assert_match(/Couldn't find all Developers with 'id'/, e.message)
+  end
+
+  def test_collection_singular_ids_setter_raises_exception_when_invalid_ids_set_with_changed_primary_key
+    company = companies(:first_firm)
+    ids = [Client.first.name, "unknown client"]
+    e = assert_raises(ActiveRecord::RecordNotFound) { company.clients_using_primary_key_ids = ids }
+    assert_match(/Couldn't find all Clients with 'name'/, e.message)
   end
 
   def test_build_a_model_from_hm_through_association_with_where_clause