REST API: char and array parameter problem

# 3 years ago
Jimmy	Hello tangoer. because JSON has not char data type, i want to execute DevVarCharArray command, how to set input value, `[48,49,50]` or `["0","1","2"]` all failed `PUT hosts/localhost/devices/sys/tg_test/1/commands/DevVarCharArray` `{ "host": "localhost:10000", "device": "sys/tg_test/1", "name": "DevVarCharArray", "input": [48,49,50] }` When write attribute(s), i want to pass new value in request's body, but failed `PUT hosts/localhost/devices/sys/tg_test/1/attributes/long_spectrum/value" # will set value to [], not [1,2,3,4]` `{ "host": "localhost:10000", "device": "sys/tg_test/1", "name": "long_spectrum", "value": [1,2,3,4] }` thanks Edited 3 years ago

# 3 years ago

Hello tangoer.

because JSON has not char data type, i want to execute DevVarCharArray command, how to set input value, `[48,49,50]` or `["0","1","2"]` all failed

PUT hosts/localhost/devices/sys/tg_test/1/commands/DevVarCharArray

{
  "host": "localhost:10000",
  "device": "sys/tg_test/1",
  "name": "DevVarCharArray",
  "input": [48,49,50]
}

When write attribute(s), i want to pass new value in request's body, but failed

PUT hosts/localhost/devices/sys/tg_test/1/attributes/long_spectrum/value"
# will set value to [], not [1,2,3,4]

{
  "host": "localhost:10000",
  "device": "sys/tg_test/1",
  "name": "long_spectrum",
  "value": [1,2,3,4]
}

thanks

Edited 3 years ago

# 3 years ago
Ingvord	Hi Jimmy, As per version 2.1 DevVarCharArray is not supported. Concerning long spectrum you should pass an argument as `v` query param: `PUT …/devices/sys/tg_test/1/attributes/long_spectrum/value?v=[1,2,3]` OR in encoded way: `PUT …/devices/sys/tg_test/1/attributes/long_spectrum/value?v=%5B1%2C2%2C3%5D` Hope this helps

# 3 years ago

Ingvord

Hi Jimmy,

As per version 2.1 DevVarCharArray is not supported.

Concerning long spectrum you should pass an argument as `v` query param:


PUT …/devices/sys/tg_test/1/attributes/long_spectrum/value?v=[1,2,3]

OR in encoded way:


PUT …/devices/sys/tg_test/1/attributes/long_spectrum/value?v=%5B1%2C2%2C3%5D

Hope this helps smile

# 3 years ago
Jimmy	Thank you Ingvord For write attributes, should pass an argument as `v` query param. As from https://tango-rest-api.readthedocs.io/en/v1.1/device/#value have: argument can be passed in request's body. so i get can pass an argument as request body Edited 3 years ago

# 3 years ago
Ingvord	That's true, you can pass arguments in body for multiple attributes reading/writing, e.g. https://tango-rest-api.readthedocs.io/en/v1.1/hosts/#attributes For single device attributes query parameter `v` is used Cheers, Edited 3 years ago