Unable to get proper table key from nginx lua?
Multi tool use
Unable to get proper table key from nginx lua?
Currently posting this data:
{"test":"hello","test2":"world"}
{"test":"hello","test2":"world"}
Header is this:
"Content-Type: application/json"
"Content-Type: application/json"
Currently trying to loop through the json but in my code, it already treats the posted data as table for some reason. So its useless even when I tried to encode & decode the json to table.
table
Anyways, when I loop through it, I'm getting only one loop where the key is like this:
"test":"hello"
I'm wondering what went wrong here. I'm trying to loop through each key & set the value to redis.
They key is supposed to be like this:
test
test
Here is my content_by_lua part:
content_by_lua
content_by_lua '
local cjson = require "cjson"
local redis = require "resty.redis"
local red = redis:new()
red:set_timeout(1000) -- 1 sec
local ok, err = red:connect("127.0.0.1", 6379)
if not ok then
ngx.say("failed to connect: ", err)
return
end
ngx.header.content_type = "application/json; charset=utf-8"
ngx.req.read_body()
local data, err = ngx.req.get_post_args()
if not data then
ngx.say("err: ",err)
return
end
ngx.status = ngx.HTTP_OK
for key, val in pairs(data) do
ok, err = red:set(key, val)
if not ok then
ngx.say("failed to set key: ", err)
return
end
end
';
What did I do wrong here?
1 Answer
1
If the code is expecting a a Lua table to iterate through, then it will not handle the JSON-formatted string that you are testing with:
{"test":"hello","test2":"world"}
{"test":"hello","test2":"world"}
As a Lua table, it should be:
{"test" = "hello", "test2" = "world"}
{"test" = "hello", "test2" = "world"}
Now, why it is not properly decoding the JSON, etc. that I cannot tell from the code you have posted.
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