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我在使用respond_to方法時遇到問題:當模型保存時,它以正確的json格式返回。但是,當模型沒有得到保存時,因爲像ActiveRecord :: RecordNotUnique這樣的錯誤,rails會返回另一個不是我的響應:「已完成500內部服務器錯誤」,返回的響應轉到ajax錯誤功能。Rails ajax調用500內部服務器錯誤
我在這裏的問題是,我怎樣才能發送正確的響應,在else語句中的一個,所以我可以向用戶顯示正確的錯誤消息。
我處於開發模式。
爲了簡單起見,我稍微更改了代碼。
謝謝。
控制器:
def create
@distribuicao = DistribuicaoPorCargo.new(distribuicao_por_cargo_params)
respond_to do |format|
if @distribuicao.save
format.json { render json: @distribuicao.distribuicao, status: :created }
else
format.json { render json: @distribuicao.errors.full_messages, status: :unprocessable_entity }
end
end
end
的.js:
$.ajax
url: '/distribuicao_por_cargos'
type: 'POST'
dataType: 'JSON'
data: {
data: JSON.stringify(data_send_to_server)
}
success: (data, textStatus, jqXHR) ->
console.log("AJAX Sucesss: #{textStatus}")
error: (jqXHR, textStatus, errorThrown) ->
console.log("AJAX Failed: #{textStatus}")
日誌:
Started POST "/distribuicao_por_cargos" for 187.110.216.111 at 017-06-02 17:32:22 -0300
Cannot render console from 187.110.216.111! Allowed networks: 127.0.0.1, ::1, 127.0.0.0/127.255.255.255
Processing by DistribuicaoPorCargosController#create as JSON
Parameters: {"concurso_id"=>"2", "local_da_prova_id"=>"6", "tabela"=>"{\"cargo_id\":\"4\",\"quantidade_de_candidatos\":\"10\"},{\"cargo_id\":\"9\",\"quantidade_de_candidatos\":\"10\"},{\"cargo_id\":\"12}]"}
Concurso Load (0.4ms) SELECT "concursos".* FROM "concursos" WHERE "concursos"."id" = $1 LIMIT $2 [["id", 2], ["LIMIT", 1]]
LocalDaProva Load (0.2ms) SELECT "local_da_provas".* FROM "local_da_provas" WHERE "local_da_provas"."id" = $1 LIMIT $2 [["id", 6], ["LIMIT", 1]]
(0.1ms)
BEGIN
LocalDaProva Load (0.3ms) SELECT "local_da_provas".* FROM "local_da_provas" WHERE "local_da_provas"."id" = $1 LIMIT $2 [["id", 6], ["LIMIT", 1]] SQL (1.5ms)
INSERT INTO "distribuicao_por_cargos" ("created_at", "updated_at", "local_da_prova_id", "distribuicao") VALUES ($1, $2, $3, $4) RETURNING "id" [["created_at", 2017-06-02 20:32:23 UTC], ["updated_at", 2017-06-02 20:32:23 UTC], ["local_da_prova_id", 6], ["distribuicao", "[{\"cargo_id\":\"4\",\"quantidade_de_candidatos\":\"10\"},{\"cargo_id}]"]]
(0.2ms)
ROLLBACK
Completed 500 Internal Server Error in 108ms (ActiveRecord: 6.3ms)
ActiveRecord::RecordNotUnique (PG::UniqueViolation: ERROR: duplicate key value violates unique constraint "index_distribuicao_por_cargos_on_local_da_prova_id"
DETAIL: Key (local_da_prova_id)=(6) already exists.
: INSERT INTO "distribuicao_por_cargos" ("created_at", "updated_at", "local_da_prova_id", "distribuicao") VALUES ($1, $2, $3, $4) RETURNING "id"):
不錯!我沒有意識到這個錯誤(ActiveRecord :: RecordNotUnique)是在數據庫級別,所以這就是爲什麼應用程序沒有捕獲它。 –
@PedroGabrielLima是的,通過模型驗證,您將在插入數據庫之前捕獲錯誤,並且您的控制器將發送正確的響應;所以它應該解決問題(如果沒有,請不要忘記接受答案 - 點擊勾號)。 – Gerry