JSON.ARRPOP key [path [index]]
@json,
@write,
@slow,
Remove and return an element from the index in the array
keyis key to modify.
indexis position in the array to start popping from. Default is -1, meaning the last element. Out-of-range indexes round to their respective array ends. Popping an empty array returns null.
pathis JSONPath to specify. Default is root $.
Create two headphone products with maximum sound levels.
redis> JSON.SET key $ '[{"name":"Healthy headphones","description":"Wireless Bluetooth headphones with noise-cancelling technology","connection":{"wireless":true,"type":"Bluetooth"},"price":99.98,"stock":25,"colors":["black","silver"],"max_level":[60,70,80]},{"name":"Noisy headphones","description":"Wireless Bluetooth headphones with noise-cancelling technology","connection":{"wireless":true,"type":"Bluetooth"},"price":99.98,"stock":25,"colors":["black","silver"],"max_level":[80,90,100,120]}]'
OKGet all maximum values for the second product.
redis> JSON.GET key $.[1].max_level
"[[80,90,100,120]]"Update the max_level field of the product: remove an unavailable value and add a newly available value.
redis> JSON.ARRPOP key $.[1].max_level 0
1) "80"Get the updated array.
redis> JSON.GET key $.[1].max_level
"[[90,100,120]]"Now insert a new lowest value.
redis> JSON.ARRINSERT key $.[1].max_level 0 85
1) (integer) 4Get the updated array.
redis> JSON.GET key $.[1].max_level
"[[85,90,100,120]]"null if the matching value is not an array.
JSON.ARRAPPEND | JSON.ARRINDEX