Rollback of sql query in Rails 4 - sql

Question

I have a table:
create_table "requests", force: :cascade do |t|
t.string "name"
t.string "address"
t.integer "client_id"
t.string "phone"
t.string "mobile"
t.text "social_media"
t.string "email"
t.integer "type"
t.text "subtype"
t.text "description"
t.string "priority"
t.integer "responsible"
t.integer "price"
t.boolean "payed", default: false
t.datetime "date"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
note, I have deleted all constraints, like not null etc.
and I have method:
def mark_payed
#request.update(payed: true)
redirect_to requests_path
end
so I want to update payed boolean attribute to true.
When i update request object with name defined like this one:(note: the name attribute is set)
2530;"ТОО ББ Нура";"---;--;-";;"---";"---";"";"";3;"";"---";"2";13;3000;FALSE;"";"2015-06-09 00:00:00";"2015-06-17 06:59:49.621709"
it works fine and my payed attribute is updated.
But in when i am updating this one: (note: the name attribute is empty ('').)
2532;"''";"''";89;"''";"''";"";"";3;"";"-";"2";2;1200;FALSE;"";"2015-06-09 00:00:00";"2015-06-16 11:18:54.296975"
I get a ROLLBACK.
HERE ARE THE LOGS FOR TWO CASES:
CASE 1:
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT 1 [["id", 1]]
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT 1 [["id", 1]]
Request Load (0.4ms) SELECT "requests".* FROM "requests" WHERE "requests"."id" = $1 LIMIT 1 [["id", 2533]]
Request Load (0.4ms) SELECT "requests".* FROM "requests" WHERE "requests"."id" = $1 LIMIT 1 [["id", 2533]]
(0.4ms) BEGIN
(0.4ms) BEGIN
SQL (1.0ms) UPDATE "requests" SET "social_media" = $1, "subtype" = $2, "payed" = $3, "updated_at" = $4 WHERE "requests"."id" = $5 [["social_media", nil], ["subtype", nil], ["payed", "t"], ["updated_at", "2015-06-17 08:50:45.921870"], ["id", 2533]]
SQL (1.0ms) UPDATE "requests" SET "social_media" = $1, "subtype" = $2, "payed" = $3, "updated_at" = $4 WHERE "requests"."id" = $5 [["social_media", nil], ["subtype", nil], ["payed", "t"], ["updated_at", "2015-06-17 08:50:45.921870"], ["id", 2533]]
(8.7ms) COMMIT
(8.7ms) COMMIT
CASE 2:
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT 1 [["id", 1]]
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT 1 [["id", 1]]
Request Load (0.4ms) SELECT "requests".* FROM "requests" WHERE "requests"."id" = $1 LIMIT 1 [["id", 2532]]
Request Load (0.4ms) SELECT "requests".* FROM "requests" WHERE "requests"."id" = $1 LIMIT 1 [["id", 2532]]
(0.2ms) BEGIN
(0.2ms) BEGIN
(0.4ms) ROLLBACK
(0.4ms) ROLLBACK
So i get rollback in the update query. Also if it makes sense I have an before_update: update_attributes which finds_by client_id.
Notice, that client_id is null in first case, which works,
and is set in second case which doesn't. So I concluded that it is not due to before_update.
Also it is kind of strange to see logs doubled, but it is out of scope of my question for now.
EDIT: my before_update action (btw, i commented out before_update, the problem is same)
def update_attributes
#client = Client.find_by(client_id: self.client_id) if self.client_id.present?
if #client.present?
filled_cartridges.each do |d|
#r = FilledCartridge.find_by(request_id: d.id)
#cartridge = Cartridge.find_by(cartridge_name: d.cartridge_name)
if #cartridge.nil?
#cartridge = Cartridge.create!(cartridge_name: d.cartridge_name)
end
d.client_id = #client.id
d.cartridge_id = #cartridge.id
end
end
# update repair_cartridges attributes
end