Question

我有一个字符串，需要提取device_id。在示例中，我需要“00：06：66：7C：6A：C0”

{   "app_data_quota":{"max":153600,"used":9432},
    "aux_device_data_reference":{"reference_id":70},
    "aux_device_data_in":{"device_id":"00:06:66:7C:6A:C0","aux_data":"LS0tCiQkJA=="},
    "aux_device_data_quota":{"max":153600,"used":9432}
}

Answer 1

LUT。

您可以将数据保存在Hash中，然后提取“device_id”，执行以下操作：

device_data = {   "app_data_quota":{"max":153600,"used":9432},
    "aux_device_data_reference":{"reference_id":70},
    "aux_device_data_in":{"device_id":"00:06:66:7C:6A:C0","aux_data":"LS0tCiQkJA=="},
    "aux_device_data_quota":{"max":153600,"used":9432}
}
device_id = device_data[:aux_device_data_in][:device_id]

此致

如何在Rails中获取子字符串？

1 个答案: