How get a substring in Rails?

Question

I have a string and need to extract the device_id. In the example I would need "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}
}

Thanks @kiddorails, do you first convert into a Hash? How would you convert this string into a Hash? — Lut
– Lut, Commented Sep 1, 2016 at 5:06

Carlos Barroso · Accepted Answer · 2016-08-31 06:36:43Z

1

Lut.

You can save your data in a Hash and then extract the 'device_id' doing something like this:

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]

Regards

edited Aug 31, 2016 at 6:36

answered Aug 31, 2016 at 6:17

Carlos Barroso

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2 Comments

Lut Over a year ago

Hi Carlos, how can you convert this string into a Hash? I dont find a straightforward solution.

Carlos Barroso Over a year ago

device_data = eval(your_string)

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