Modify LUCI(include new tab) to display a file in text format

For Developers
1

I am fairly new to Opnenwrt. I am trying to modify luci to display a file with auto refresh capability.

So, i am generating a file at tmp/xxxx and it's updating every 4 seconds. I have managed to display it on Luci but i want auto-refresh functionality.

I am currently using this code in usr/lib/lua/luci/controller/admin/chng.lua to generate 2 new tabs, xxxx will be used for displaying the file.

module("luci.controller.admin.chng", package.seeall)

function index()
	entry({"admin", "chng"}, firstchild(), "Chng", 60).depedent=false
	entry({"admin", "chng", "tab_one"}, template("yyy"),_("yyy"), 1)
	entry({"admin", "chng", "tab_two"}, form("xxxx"),_("xxxx"), 2)
end

And to display I am using following code at usr/lib/lua/luci/model/cbi/xxxx.lua to display the file in simple text format(or as it is in the file).

<%#local fs  = require "nixio.fs"
local sys = require "luci.sys"


f = SimpleForm("rc", translate("Look This Is It!!"))


t = f:field(TextValue, "rcs")
t.rmempty = true
t.rows = 20


function t.cfgvalue()
	return fs.readfile("/tmp/kamnu")
end

return f
-%>

which is similar to the startup tab of the luci(that displays rc.local file), can someone help me to make this auto refreshing i found that "XHR.poll" can be used but i cant figure it out as I don't have experience with html and javascript, please help me.

2

Hi dontknow,

I'm trying to add my own page to Luci too. I followed your instruction.

What I've done:

  1. created a file usr/lib/lua/luci/controller/admin/chng.lua with first snippet of code
  2. created a file usr/lib/lua/luci/model/cbi/xxxx.lua with second snippet of code
  3. restarted my router

I don't see new tabs in a main menu strip. Maybe I should do anything else?

3

Can you just do the autorefresh in javascript?

4

well the first file chng.lua is all you need actually to make the tabs. And the other file xxxx.lua is commented out you should remove " <%#.....%>".
for starters just try out a simple html view file. Like, for using html you need to show it as template so try it out with yyy tab just make a simple html file at .....luci/view/yyy.htm for example,

<%+header%>
<h1><%:hmm%></h1>
<%+footer%>
1 Like
5

I guess so, but I don't have any experience with javascript so wanted some help so i can use it as a reference.

6

Yes, I've done it. Thanks for help.
My next step is to send any symbol to serial port pressing a button on this page. Maybe you know how... :blush:

Regarding your problem. You can use a code below (your page will refresh every 4 seconds without javascript):

7

yes, actually that was my last hope to use auto refresh in the page but man, i dont know how to print my file using html so its not working.

For your problem I think you should look into GPIO part it should be somewhat similar.

8

Look at the syslog or kernel log pages for examples

9

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