(Ruby) QuickBooks - Parse the JSON of a Customer Balance Detail Report

This example is to show how to parse the JSON of a particular Quickbooks report. The techniques shown here may help in parsing similar reports.

The JSON to be parsed is available at Sample Quickbooks Customer Balance Detail Report JSON

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

require 'chilkat'

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

http = Chilkat::CkHttp.new()

# Get the JSON we'll be parsing..
jsonStr = http.quickGetStr("https://www.chilkatsoft.com/exampleData/qb_customer_balance_detail_report_2.json")
if (http.get_LastMethodSuccess() != true)
    print http.lastErrorText() + "\n";
    exit
end

json = Chilkat::CkJsonObject.new()
json.Load(jsonStr)

# As an alternative to manually writing code, use this online tool to generate parsing code from sample JSON: 
# Generate Parsing Code from JSON

# Let's parse the JSON into a CSV, and then save to a CSV file.
csv = Chilkat::CkCsv.new()
csv.put_HasColumnNames(true)

# Set the column names of the CSV.
numColumns = json.SizeOfArray("Columns.Column")
if (numColumns < 0)
    print "Unable to get column names" + "\n";
    exit
end

i = 0
while i < numColumns
    json.put_I(i)
    csv.SetColumnName(i,json.stringOf("Columns.Column[i].ColTitle"))
    i = i + 1
end

# Let's get the rows.
# We'll ignore the Header and Summary, and just get the data.
row = 0
numRows = json.SizeOfArray("Rows.Row[0].Rows.Row")
if (numRows < 0)
    print "Unable to get data rows" + "\n";
    exit
end

while row < numRows
    json.put_I(row)
    numColumns = json.SizeOfArray("Rows.Row[0].Rows.Row[i].ColData")
    col = 0
    while col < numColumns
        json.put_J(col)
        csv.SetCell(row,col,json.stringOf("Rows.Row[0].Rows.Row[i].ColData[j].value"))
        col = col + 1
    end
    row = row + 1
end

# Show the CSV 
print csv.saveToString() + "\n";

# Save to a CSV file
success = csv.SaveFile("qa_output/customerDetailReport.csv")