Cannot get filter to work
Kollibri opened this issue · comments
I have the following json:
{ "ip_pool": [ { "ip": "10.231.41.75", "nat": "10.231.41.75", "available": "false" }, { "ip": "10.231.41.76", "nat": "10.231.41.76", "available": "true" }, { "ip": "10.231.41.77", "nat": "10.231.41.77", "available": "true" }, { "ip": "10.231.41.78", "nat": "10.231.41.78", "available": "true" } ] }
And I am trying to use the following jmespath query to return all results where "available" is true.
ip_pool[?available=="true"]
But this returns an empty array. From what I can see, this should be pretty simple, I'm not sure what I'm missing.
i figured it out, even though I cant explain it, you've got to wrap the true in double quotes, and then in back ticks. hopefully searching on google can give the reason why :
expression = jmespath.compile('ip_pool[?available==` "true" `]')
The double quotes are used to specify a "quoted identifier" (https://jmespath.org/specification.html#identifiers) which is essentially a field, similiar to how ip_pool in your query is an unquoted identifier. So essentially your original query is the same thing as saying ip_pool[?available==true].
If you want to specify the literal string true instead of a field named true, you can either use the syntax you used with the backticks, or as a shorthand, you can use the single quotes:
ip_pool[?available=='true']
Hope that helps, glad you were able to figure it out!