Lua Requires Chilkat v9.5.0.92+

Keeping Query Params in a Hashtable

Demonstrates how to use a Chilkat Hashtable to hold query params and re-emit as a query param string. Lua

local chilkat = require("chilkat")

local ht = chilkat.Hashtable.new()

-- Add name/value pairs from an existing query param string where the values are already URL encoded.
local qp = "txt=this%20is%20a%20test&color=blue&fruits=apples%26oranges"
local success = ht:add_query_params(qp)

-- Add some additional name/value pairs.
ht:add_str("name", "Jack Sparrow")
ht:add_str("movie", "Pirates of the Carribean")

-- Iterate over the hash table to show what we have..

local keys = chilkat.StringTable.new()
ht:get_keys(keys)
local numKeys = keys.count
local key = ""
local val = ""
local i = 0
while i < numKeys do
    key = keys:string_at(i)
    val = ht:lookup_str(key)
    print(key .. " = " .. val)
    i = i + 1
end

-- Output for the above loop:

-- color = blue
-- name = Jack Sparrow
-- fruits = apples&oranges
-- txt = this is a test
-- movie = Pirates of the Carribean

-- Get all name/value pairs as a query parm string with values URL encoded
qp = ht:to_query_string()
print(qp)

-- Result:
-- color=blue&name=Jack%20Sparrow&fruits=apples%26oranges&txt=this%20is%20a%20test&movie=Pirates%20of%20the%20Carribean