(Ruby) JSON: Array of Objects

Here we have a JSON object that contains an array, where each element in the array is a JSON object. This example demonstrates how to access the objects contained within an array.

{ 
  "employees":[
    {"firstName":"John", "lastName":"Doe"},
    {"firstName":"Anna", "lastName":"Smith"},
    {"firstName":"Peter","lastName":"Jones"}
  ]
}

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

json = Chilkat::CkJsonObject.new()

# This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
# The presence of whitespace chars for pretty-printing makes no difference to the Load
# method. 
jsonStr = "{\"employees\":[{\"firstName\":\"John\", \"lastName\":\"Doe\"},{\"firstName\":\"Anna\", \"lastName\":\"Smith\"},{\"firstName\":\"Peter\",\"lastName\":\"Jones\"}]}"

success = json.Load(jsonStr)
if (success != true)
    print json.lastErrorText() + "\n";
    exit
end

# Get the "employees" array.
# employees is a CkJsonArray
employees = json.ArrayOf("employees")
if (json.get_LastMethodSuccess() == false)
    print "employees member not found." + "\n";
    exit
end

# Iterate over each employee, getting the JSON object at each index.
numEmployees = employees.get_Size()
i = 0
while i < numEmployees

    # empObj is a CkJsonObject
    empObj = employees.ObjectAt(i)

    print "employee[" + i.to_s() + "] = " + empObj.stringOf("firstName") + " " + empObj.stringOf("lastName") + "\n";

    i = i + 1
end