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我在使用respond_to方法时遇到问题:当模型保存时,它以正确的json格式返回。但是,当模型没有得到保存时,因为像ActiveRecord :: RecordNotUnique这样的错误,rails会返回另一个不是我的响应:“已完成500内部服务器错误”,返回的响应转到ajax错误功能。Rails ajax调用500内部服务器错误
我在这里的问题是,我怎样才能发送正确的响应,在else语句中的一个,所以我可以向用户显示正确的错误消息。
我处于开发模式。
为了简单起见,我稍微更改了代码。
谢谢。
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}")
日志:
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"):
不错!我没有意识到这个错误(ActiveRecord :: RecordNotUnique)是在数据库级别,所以这就是为什么应用程序没有捕获它。 –
@PedroGabrielLima是的,通过模型验证,您将在插入数据库之前捕获错误,并且您的控制器将发送正确的响应;所以它应该解决问题(如果没有,请不要忘记接受答案 - 点击勾号)。 – Gerry