Skip to content

Instantly share code, notes, and snippets.

@karlp
Last active February 9, 2016 10:48
Show Gist options
  • Save karlp/e68783fa9f50f6a49e3f to your computer and use it in GitHub Desktop.
Save karlp/e68783fa9f50f6a49e3f to your computer and use it in GitHub Desktop.
jquery ajax post application/json to luci openwrt lua web admin
module("luci.controller.rme.jquery", package.seeall)
local http = require("luci.http")
local protocol = require("luci.http.protocol")
local json = require("luci.json")
function index()
entry({'karl', 'modbus_devices'}, call("action_modbus_devices"), "Modbus Devices", 20).dependent=false
end
function kkdumpt(tt, label)
if tt then
if label then io.stderr:write(string.format("dumping table: %s\n", label)) end
for k,v in pairs(tt) do
io.stderr:write(string.format("k=%s\n", tostring(k)))
end
else
io.stderr:write(string.format("table was nil: %s\n", label))
end
end
function action_modbus_devices()
local http_method = http.getenv("REQUEST_METHOD")
kkdumpt(http.getenv(), "http.getenv")
if http_method == "POST" then
local hc = http.content()
io.stderr:write(string.format("karl early post content = %s\n", tostring(hc)))
io.stderr:write(string.format("posted content type = %s\n", tostring(http.getenv("CONTENT_TYPE"))))
if (http.getenv("CONTENT_TYPE") == "application/json") then
io.stderr:write("karl got posted app/json as expected\n")
-- TODO - do something useful with "hc""
--modbus_devices_save(hc)
local rdata = { message = "it sort of maybe worked..."}
http.prepare_content("application/json")
http.write(json.encode(rdata))
http.close()
return
end
end
-- fall through if invalid post
luci.template.render("rme/karl")
return
end
-- errors here are from luci prior to r10531
-- current versions of luci in trunk and AA work as expected.
dumping table: http.getenv
k=SERVER_NAME
k=SCRIPT_NAME
k=QUERY_STRING
k=HTTP_ACCEPT_ENCODING
k=SERVER_ADDR
k=GATEWAY_INTERFACE
k=REMOTE_ADDR
k=CONTENT_LENGTH
k=SERVER_PORT
k=SCRIPT_FILENAME
k=REQUEST_URI
k=SERVER_PROTOCOL
k=REMOTE_HOST
k=HTTP_HOST
k=HTTP_ACCEPT_LANGUAGE
k=HTTP_REFERER
k=REDIRECT_STATUS
k=PATH
k=CONTENT_TYPE
k=SERVER_SOFTWARE
k=HTTP_COOKIE
k=DOCUMENT_ROOT
k=HTTP_ACCEPT
k=HTTP_CONNECTION
k=PATH_INFO
k=HTTP_USER_AGENT
k=REMOTE_PORT
k=REQUEST_METHOD
karl early post content = nil <<<<===== :(
posted content type = application/json
karl got posted app/json as expected
<%+header%>
<h2><%:Modbus Devices%></h2>
<input id="klicky" class="cbi-button cbi-input-apply" type="submit" data-bind="click: save" value="save"/>
<script type="text/javascript" src="/resources/jquery-2.1.1.min.js"></script>
<script type="text/javascript">
function clicky() {
console.log("saving....");
var dataToSave = {
something: "asdfasd asdfa asdf",
klist: [ "item1", "item2"],
knum: 456
};
//alert("Could now send this to server: " + JSON.stringify(dataToSave));
var pdata = JSON.stringify(dataToSave);
console.log("posting: " + pdata);
$.ajax({
url: location.href,
contentType: "application/json",
data: pdata,
type: "POST"
})
}
$(function() {
$("#klicky").click(clicky);
});
</script>
<%+footer%>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment