How to Updating Value in the Nested Dictionary?

[Chia-Wei Chang]

Hi everyone,

I want to Use GET and PUT to access this json file using robot framework.

{
"A": {
    "B": [
        {
            "C00": 0,
            "D00": "test00"
        },
        {
            "C01": 0,
            "D01": "test01"
        }
         ]
    }
}

After get json file and my code is 

${json} =            Get Response Body
&{data} =            Parse Json              ${json}
Log to console       ${data['A']['B'][0]['C00']}

I was successful to get the value of "C00" , but I do not know how to set nested dictionary value. 

For example ,  Set "C00": 0 to "C00": 1

I have tried "Evaluate". The ${data['A']['B'][0]['C00']}  change the value from 0 to 1,  but nothing happened in the ${data}

${data['A']['B'][0]['C00']} =     Evaluate     1
Log to console                  ${data['A']['B'][0]['C00']}  # C00 = 1
Log to console                  ${data}                      # C00 = 0

then I use "Set to Dictionary".  ${data['A']['B'][0]['C00']} is 0 , but ${data} add a item behind.

Set to Dictionary      ${data}     ${data['A']['B'][0]['C00']}    1
Log to console         ${data['A']['B'][0]['C00']}    # C00 = 0
Log to console         ${data}  

 ${data}

{
"A": {
    "B": [
        {
            "C00": 0,
            "D00": "test00"
        },
        {
            "C01": 0,
            "D01": "test01"
        }
         ]
    },
1:  1
}

I read Accessing Sub Dictionary Key-Value To Manipulate , but still can't have a way to solve the problem.

Thanks,

William

[Kevin O.]

The dictionary you want to manipulate is not ${data}, but one nested inside.

Try this:

Set to Dictionary      ${data['A']['B'][0]}    C00=${1}


Cheers,

Kevin

The $ and curly braces around 1 are to get 1 as an integer. Since that is the type that is already present, it seems more appropriate.

[Pekka Klärck]

Accidentally replied only to sender earlier.

28.6.2017 12.42 ip. "Pekka Klärck" <pe...@iki.fi> kirjoitti:

Hello,

I think you should be able to use something like

    Set To Dictionary    ${data['A']['B'][0]}    C00    1

Notice that when you use

    ${data['A']['B'][0]['C00']} =     Evaluate     1

what you actually get is variable with name
${data['A']['B'][0]['C00']}. The only assignment syntax that is
supported in addition to the normal

    ${name} =    Keyword    args

is

    ${name.attribute} =    Keyword    args

Adding support for what you used would be possible, but perhaps a bit
risky considering backwards compatibility. It would be safer to
support

    ${data}[A]'B][0][C00] =     Keyword    args

similarly as https://github.com/robotframework/robotframework/issues/2601
proposes.

In general working with (nested) dicts and lists should be made easier
in Robot. This can include syntax changes and also enhancements to
BuiltIn and Collections libraries. Enhancement ideas and general
comments about the matter are appreciated!

Cheers,
    .peke

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[Chia-Wei Chang]

Hi, Pekka and Kevin

thank you, It solved my problem.