Fix "prepared statements" errors

See https://coderwall.com/p/45ombq

app/controllers/conversations_controller.rb

@@ -83,8 +83,10 @@ class ConversationsController < ApplicationController
 
   def new
     all_contacts_and_ids = Contact.connection.select_rows(
-      current_user.contacts.where(:sharing => true).joins(:person => :profile).
-        select("contacts.id, profiles.first_name, profiles.last_name, people.diaspora_handle").to_sql
+      Contact.connection.unprepared_statement {
+        current_user.contacts.where(:sharing => true).joins(:person => :profile).
+          select("contacts.id, profiles.first_name, profiles.last_name, people.diaspora_handle").to_sql
+      }
     ).map{|r| {:value => r[0], :name => Person.name_from_attrs(r[1], r[2], r[3]).gsub(/(")/, "'")} }
 
     @contact_ids = ""

app/models/user/querying.rb

@@ -27,7 +27,7 @@ module User::Querying
     opts[:klass] = klass
     opts[:by_members_of] ||= self.aspect_ids
 
-    post_ids = klass.connection.select_values(visible_shareable_sql(klass, opts)).map { |id| id.to_i }
+    post_ids = klass.connection.select_values(visible_shareable_sql(klass, opts)).map(&:to_i)
     post_ids += klass.connection.select_values("#{construct_public_followings_sql(opts).to_sql} LIMIT #{opts[:limit]}").map {|id| id.to_i }
   end
 
@@ -88,9 +88,9 @@ module User::Querying
   end
 
   def construct_shareable_from_self_query(opts)
-    conditions = {:pending => false }
+    conditions = {:pending => false, :author_id => self.person_id }
     conditions[:type] = opts[:type] if opts.has_key?(:type)
-    query = self.person.send(opts[:klass].to_s.tableize).where(conditions)
+    query = opts[:klass].where(conditions)
 
     if opts[:by_members_of]
       query = query.joins(:aspect_visibilities).where(:aspect_visibilities => {:aspect_id => opts[:by_members_of]})

lib/evil_query.rb

@@ -6,7 +6,7 @@ module EvilQuery
     end
 
     def id_sql(relation, id_column)
-      relation.select(id_column).to_sql
+      @class.connection.unprepared_statement { relation.select(id_column).to_sql }
     end
   end