JSON Key Lookup

kdimitrov over 7 years ago

Hi there,

Curious if anyone has any good suggestions on the below problem. We are trying to get the keys from a JSON array object. The keys unfortunately are dates and are dynamic. For example, the below works fine, but it's hard-coding "09/03/2017". Any way to get all the keys from the object properly? Worth noting that index(local!list, 1) does not work in the below case.
=with(
local!json: "{
""09/03/2017"": {
""total"": 5
},
""10/03/2017"": {
""total"": 5
}
}",
local!list: a!fromJson(local!json),
index(local!list, "09/03/2017")
)

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0 PhilB
Certified Lead Developer
over 7 years ago

I was going to suggest using a!jsonPath, but it appears it's impossible to get the key names in that manner. Arguably the JSON here, whilst syntactically valid, isn't really logically valid. However, it is possible to extract the keys from the JSON using a regex, and then loop over them - but it does require the regex plugin:

= with(
local!json: "{
""09/03/2017"": {
""total"": 5
},
""10/03/2017"": {
""total"": 5
}
}",
apply(
fn!index(
a!fromJson(
local!json
),
_,
null
),
fn!regexallmatches(
"([0-9]{2}\\/[0-9]{2}\\/[0-9]{4})",
local!json
)
)
)
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0 PhilB
Certified Lead Developer
over 7 years ago

I was going to suggest using a!jsonPath, but it appears it's impossible to get the key names in that manner. Arguably the JSON here, whilst syntactically valid, isn't really logically valid. However, it is possible to extract the keys from the JSON using a regex, and then loop over them - but it does require the regex plugin:

= with(
local!json: "{
""09/03/2017"": {
""total"": 5
},
""10/03/2017"": {
""total"": 5
}
}",
apply(
fn!index(
a!fromJson(
local!json
),
_,
null
),
fn!regexallmatches(
"([0-9]{2}\\/[0-9]{2}\\/[0-9]{4})",
local!json
)
)
)
Cancel
Vote Up 0 Vote Down

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Verify Answer

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