User#projects_limit remove DB default and added NOT NULL constraint

This change is required because otherwise if a user is created with a
value for `projects_limit` that matches the DB default, it gets
overwritten by `current_application_settings.default_projects_limit`. By
removing the default we once again can allow a user to be created with a
limit of 10 projects without the risk that it'll change to 10000

2 files changed, 40 insertions, 2 deletions

diff --git a/db/migrate/20171229225929_change_user_project_limit_not_null_and_remove_default.rb b/db/migrate/20171229225929_change_user_project_limit_not_null_and_remove_default.rb
new file mode 100644
index 00000000000..54fbbcf1a0d
--- /dev/null
+++ b/db/migrate/20171229225929_change_user_project_limit_not_null_and_remove_default.rb
@@ -0,0 +1,38 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class ChangeUserProjectLimitNotNullAndRemoveDefault < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  # When a migration requires downtime you **must** uncomment the following
+  # constant and define a short and easy to understand explanation as to why the
+  # migration requires downtime.
+  # DOWNTIME_REASON = ''
+
+  # When using the methods "add_concurrent_index", "remove_concurrent_index" or
+  # "add_column_with_default" you must disable the use of transactions
+  # as these methods can not run in an existing transaction.
+  # When using "add_concurrent_index" or "remove_concurrent_index" methods make sure
+  # that either of them is the _only_ method called in the migration,
+  # any other changes should go in a separate migration.
+  # This ensures that upon failure _only_ the index creation or removing fails
+  # and can be retried or reverted easily.
+  #
+  # To disable transactions uncomment the following line and remove these
+  # comments:
+  # disable_ddl_transaction!
+
+  def up
+    # Set Users#projects_limit to NOT NULL and remove the default value
+    change_column_null :users, :projects_limit, false
+    change_column_default :users, :projects_limit, nil
+  end
+
+  def down
+    change_column_null :users, :projects_limit, true
+    change_column_default :users, :projects_limit, 10
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index aa5db5da4f0..a41979876ec 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20171220191323) do
+ActiveRecord::Schema.define(version: 20171229225929) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -1805,7 +1805,7 @@ ActiveRecord::Schema.define(version: 20171220191323) do
     t.datetime "updated_at"
     t.string "name"
     t.boolean "admin", default: false, null: false
-    t.integer "projects_limit", default: 10
+    t.integer "projects_limit", null: false
     t.string "skype", default: "", null: false
     t.string "linkedin", default: "", null: false
     t.string "twitter", default: "", null: false