Etiene Dalcol - Web development with Lua Programming Language - code.talks 2015
•
1 like•1,146 views
The document is a presentation about Sailor, an MVC web framework written in Lua. It introduces Sailor and discusses its features like routing, templates, ORM, and generators. Examples are provided of controllers, models, and templates. Sailor aims to make Lua a viable web development language by providing necessary libraries and documentation for web apps. While still early, Sailor shows potential as a full-featured but lightweight alternative to other web frameworks.
Recommended
More Related Content
What's hot
What's hot (20)
Similar to Etiene Dalcol - Web development with Lua Programming Language - code.talks 2015
Similar to Etiene Dalcol - Web development with Lua Programming Language - code.talks 2015 (20)
More from AboutYouGmbH
More from AboutYouGmbH (20)
Recently uploaded
Recently uploaded (20)
Etiene Dalcol - Web development with Lua Programming Language - code.talks 2015
- 1. Web development with Lua Programming Language Introducing Sailor, an MVC web framework in Lua Etiene Dalcol @etiene_d
- 8. @etiene_dcode.talks 2015 Better Reasons • It looks cool (I heard you could make games with it)
- 9. @etiene_dcode.talks 2015 Better Reasons • It looks cool (I heard you could make games with it) • It’s made in my home country (In my university to be more precise)
- 10. @etiene_dcode.talks 2015 • It looks cool (I heard you could make games with it) • It’s made in my home country (In my university to be more precise) • It’s easy to learn Better Reasons
- 11. @etiene_dcode.talks 2015 -- Cipher module --[[ Based on algorithms/caesar_cipher.lua by Roland Yonaba ]] local cipher = {} local function ascii_base(s) return s:lower() == s and ('a'):byte() or ('A'):byte() end function cipher.caesar( str, key ) return str:gsub('%a', function(s) local base = ascii_base(s) return string.char(((s:byte() - base + key) % 26) + base) end) end return cipher One slide crash course: cipher module
- 12. @etiene_dcode.talks 2015 -- Cipher module --[[ Based on algorithms/caesar_cipher.lua by Roland Yonaba ]] local cipher = {} local function ascii_base(s) return s:lower() == s and ('a'):byte() or ('A'):byte() end function cipher.caesar( str, key ) return str:gsub('%a', function(s) local base = ascii_base(s) return string.char(((s:byte() - base + key) % 26) + base) end) end return cipher One slide crash course: cipher module
- 13. @etiene_dcode.talks 2015 -- Cipher module --[[ Based on algorithms/caesar_cipher.lua by Roland Yonaba ]] local cipher = {} local function ascii_base(s) return s:lower() == s and ('a'):byte() or ('A'):byte() end function cipher.caesar( str, key ) return str:gsub('%a', function(s) local base = ascii_base(s) return string.char(((s:byte() - base + key) % 26) + base) end) end return cipher One slide crash course: cipher module
- 14. @etiene_dcode.talks 2015 -- Cipher module --[[ Based on algorithms/caesar_cipher.lua by Roland Yonaba ]] local cipher = {} local function ascii_base(s) return s:lower() == s and ('a'):byte() or ('A'):byte() end function cipher.caesar( str, key ) return str:gsub('%a', function(s) local base = ascii_base(s) return string.char(((s:byte() - base + key) % 26) + base) end) end return cipher One slide crash course: cipher module
- 15. @etiene_dcode.talks 2015 -- Cipher module --[[ Based on algorithms/caesar_cipher.lua by Roland Yonaba ]] local cipher = {} local function ascii_base(s) return s:lower() == s and ('a'):byte() or ('A'):byte() end function cipher.caesar( str, key ) return str:gsub('%a', function(s) local base = ascii_base(s) return string.char(((s:byte() - base + key) % 26) + base) end) end return cipher One slide crash course: cipher module
- 16. @etiene_dcode.talks 2015 -- Cipher module --[[ Based on algorithms/caesar_cipher.lua by Roland Yonaba ]] local cipher = {} local function ascii_base(s) return s:lower() == s and ('a'):byte() or ('A'):byte() end function cipher.caesar( str, key ) return str:gsub('%a', function(s) local base = ascii_base(s) return string.char(((s:byte() - base + key) % 26) + base) end) end return cipher One slide crash course: cipher module
- 17. @etiene_dcode.talks 2015 -- Cipher module --[[ Based on algorithms/caesar_cipher.lua by Roland Yonaba ]] local cipher = {} local function ascii_base(s) return s:lower() == s and ('a'):byte() or ('A'):byte() end function cipher.caesar( str, key ) return str:gsub('%a', function(s) local base = ascii_base(s) return string.char(((s:byte() - base + key) % 26) + base) end) end return cipher One slide crash course: cipher module
- 19. @etiene_dcode.talks 2015 Lua on the web • Early stage • cgilua ~ 1995 • Kepler Project ~ 2003
- 20. @etiene_dcode.talks 2015 “ I have myself developed Web sites with pure C++, Java, C#, PHP, and Python. The easiest way to go was definitely Python. If the libraries existed, Lua would be not quite as easy to use as Python, but probably quite a bit more efficient; I think it would become my first choice... if the libraries existed.” Michael Gogins “ Recently there was some discussion about mod_lua on the Apache developers mailing list. I mentioned there that I feel Lua could replace PHP as the number one web scripting language if mod_lua were stable (i.e. not still in beta) and it were implemented well (not making some of PHP's mistakes such as putting everything in the global scope with no consistent naming or parameter schemes). I've wanted to use Lua for all the things I currently use PHP for ever since I discovered it.” Rena
- 28. @etiene_dcode.talks 2015 Servers • Apache: mod_lua • Nginx: OpenResty
- 29. @etiene_dcode.talks 2015 Servers • Apache: mod_lua • Nginx: OpenResty
- 30. @etiene_dcode.talks 2015 Servers • Apache: mod_lua • Nginx: OpenResty • Xavante • Others: Lighttpd, Lwan, Pegasus, Mongoose
- 31. @etiene_dcode.talks 2015 Frameworks Orbit (2007) Least known No significant updates since 2010 MVC
- 32. @etiene_dcode.talks 2015 Frameworks Orbit (2007) Least known No significant updates since 2010 MVC Luvit (2011) Most popular Intense development node.js port 2-4x faster Needs a better documentation
- 33. @etiene_dcode.talks 2015 Frameworks Lapis (2012) Intense development Moonscript and Lua Very well documented Templater OpenResty only Not MVC
- 34. @etiene_dcode.talks 2015 Frameworks Lapis (2012) Intense development Moonscript and Lua Very well documented Templater OpenResty only Not MVC Others Complicated, abandoned, poorly documented, license issues or I never heard about it...
- 39. @etiene_dcode.talks 2015 What exactly is Sailor? • It’s an MVC web framework • Completely written in Lua • Compatible with Apache (mod_lua), Nginx (OpenResty), Xavante, Mongoose, Lighttpd and Lwan • Compatible with Linux, Windows and Mac • Compatible with different databases • MIT License • Pre alpha v0.4 (Chibi) • 0.5 (Pluto) will be released soon!
- 41. @etiene_dcode.talks 2015 What (else) is cool about Sailor? • Routing and friendly URLs • Session, cookies, include, redirect… • Lua Pages parsing • Mail sending • Simple Object Relational-Mapping • Validation (valua) • Basic login and authentication modules • Form generation • Themes (Bootstrap integration out of the box) • App generator (Linux and Mac only) • Model and CRUD generator • Automated tests
- 42. @etiene_dcode.talks 2015 • Routing and friendly URLs • Session, cookies, include, redirect… • Lua Pages parsing • Mail sending • Simple Object Relational-Mapping • Validation (valua) • Basic login and authentication modules • Form generation • Themes (Bootstrap integration out of the box) • App generator (Linux and Mac only) • Model and CRUD generator • Automated tests • Lua at client What (else) is cool about Sailor?
- 43. @etiene_dcode.talks 2015 Not so great things • It’s still in early development • Things are changing fast • It lacks features • Documentation
- 44. @etiene_dcode.talks 2015 How to get Sailor! $ luarocks install sailor $ sailor create ‘My App’ /var/www $ cd /var/www/my_app $ lua start-server.lua
- 46. @etiene_dcode.talks 2015 $ luarocks install luasql-mysql How to get Sailor! $ luarocks install sailor $ sailor create ‘My App’ /var/www $ cd /var/www/my_app $ lua start-server.lua
- 48. @etiene_dcode.talks 2015 /conf /controllers /models /pub /runtime /tests /themes /views App structure Lua files Stuff! JS libraries, images… Temp files Lua Pages
- 49. @etiene_dcode.talks 2015 Example! -- /controllers/site.lua local site = {} function site.index(page) local msg = “Hello World” page:render(‘index’, { msg = msg } ) end function site.notindex(page) page.theme = nil page:write(“I’m different!”) end return site
- 50. @etiene_dcode.talks 2015 <!-- /views/site/index.lp —> <p> A message from the server: <?lua page:print(msg) ?> <br/> The message again: <%= msg %> <!-- syntactic sugar: same thing as above —> </p> Example!
- 52. @etiene_dcode.talks 2015 <?lua@server -- Code here runs on the server ?> <?lua -- Same as above ?> <?lua@client -- Runs at the client ?> <?lua@both -- Runs at the server and the client ?> <?lua@both another_msg = “Another message” ?> <?lua page:print(another_msg) ?> <?lua@client js.window.alert(another_msg)-- Sailor v0.4 -- window:alert(another_msg) -- ^ Sailor v0.5 ?> Example!
- 54. @etiene_dcode.talks 2015 local user = {} local v = require “valua” -- validation module user.attributes = { { id = “safe” }, { name = v:new().not_empty().len(6,50) } } user.db = { key = ‘id’, table = ‘users’ } user.relations = { posts = { -- u.posts relation = “HAS_MANY”, model = “post”, attribute = “author_id” } } return user Example!
- 55. @etiene_dcode.talks 2015 local user = {} local v = require “valua” -- validation module user.attributes = { { id = “safe” }, { name = v:new().not_empty().len(6,50) } } user.db = { key = ‘id’, table = ‘users’ } user.relations = { posts = { -- u.posts relation = “HAS_MANY”, model = “post”, attribute = “author_id” } } return user Example!
- 56. @etiene_dcode.talks 2015 -- /controllers/site.lua local site = {} function site.index(page) local User = sailor.model(‘user’) local u = User:new() u.name = ‘Arnold’ local msg if u:save() then msg = ‘Success’ else msg = table.unpack(u.errors) end local users = User:find_all() page:render(‘index’, { msg = msg, users = users } ) end return site Example!