JSON.ARRINDEX

    Search for the first occurrence of a JSON value in an array

    Required arguments

    is key to parse.

    value

    is value to find its index in one or more arrays.

    About using strings with JSON commands

    start

    is inclusive start value to specify in a slice of the array to search. Default is 0.

    stop

    is exclusive stop value to specify in a slice of the array to search, including the last element. Default is 0. Negative values are interpreted as starting from the end.

    JSON.ARRINDEX - 图2About out-of-range indexes

    Out-of-range indexes round to the array’s start and end. An inverse index range (such as the range from 1 to 0) returns unfound or -1.

    Return value

    returns an of integer replies for each path, the first position in the array of each JSON value that matches the path, -1 if unfound in the array, or nil, if the matching JSON value is not an array. For more information about replies, see Redis serialization protocol specification.

    Create a document for noise-cancelling headphones in black and silver colors.

    1. OK

    Add color blue to the end of the colors array. JSON.ARRAPEND returns the array’s new size.

    Return the new length of the array.

    1. JSON.GET item:1
    2. "{\"name\":\"Noise-cancelling Bluetooth headphones\",\"description\":\"Wireless Bluetooth headphones with noise-cancelling technology\",\"connection\":{\"wireless\":true,\"type\":\"Bluetooth\"},\"price\":99.98,\"stock\":25,\"colors\":[\"black\",\"silver\",\"blue\"]}"

    Get the list of colors for the product.

    Insert two more colors after the second color. You now have five colors.

    1. dragonfly> JSON.ARRINSERT item:1 $.colors 2 '"yellow"' '"gold"'
    2. 1) (integer) 5

    Get the updated list of colors.

    Find the place where color silver is located.

    1. dragonfly> JSON.ARRINDEX item:1 $..colors '"silver"'

    See also