This document discusses GAEO, a web framework for developing applications on Google App Engine. It summarizes GAEO's model-view-controller architecture and how it handles common tasks like routing, accessing request parameters, sessions and cookies. It also covers how to extend GAEO through plugins and includes contact information for the GAEO community.

1. 陳信屹 Hsin Yi, Chen Hychen (usually use in internet) Let's Start GAEO 2008/12 /20 Kalug metting A web framwork. [email_address] [email_address] http://hychen.wuweig.org

2. 有時， 我們需要寫個小網站…

3. 但是有些事 我 們 不 想 處 理 Web server 哪個 好 ? Db 要 用哪 一種 ? 記憶 體又 爛 了 網路 又斷了， 該死 的 種花電信 這樣 我 投影片 怎麼作 ? email 又 寄不出去 又 被 XXX 當 廣告信 不 是 正妹 的 電腦 我 不想 修 理 很 我 懶 很 我 懶

4. Python 我們需要一個 solution Goggle App Engine 好像不錯 ? 免費 免費 免費

5. 買空賣空掏空的好所在

6. 但是有人覺得 Google 這台引擎 不太順 ....

7. Erisck 我是不是該弄個機油潤滑一下 ?

8. Google App Engine Oil Hi, I am Erisck GAEO( 尬意喔 ) Google App Engien Oil 作者 Erisck ver 0.2, since 2008 Web Framwork 台灣製造 這個油絕對不會 漲價 Erisck

9. Model Use Google App Engine Datastore API Model Relation Mapper Many To One: belonss_to() Many To Many: Not Implment yet (0.2 release) Has useful attributes updates method. model_obj.update_attributes(name='hi') model_obj.update_attributes({name:'hi'})

10. So, GAEO Is Also MVC Model / Controller / View

11. GAEO is a MVC Framwork Model GAE Datastore Model Controller POST/GET/PUT/DELETE View XML/HTML/JSON/TEXT/IMAGE HTML Template Engine Django Template

12. 架構 架構

13. http://example.org/home Which controller ? Which action ?

14. Original GAE URl Routing Django like app.yaml urls.py in django Regex supported Easy config? Easy understand? I don't know handlers: - url: /css static_dir: assets/css - url: /js static_dir: assets/js

15. GAEO URL Routing Rails lik main.py Regex supported Easy understand Easy config It's more eazy than orginal configure to me r.connect('/about/', \ controller='welcome', \ action="about") # http://example.org/welcome/ \ about r.connect('/:controller/:action/:id') # http//example.org/ctrl/act/1

16. 架構 架構

17. Controller Do action to render View

18. How to get data from GET/POST PHP $_GET['缺']; $_POST[''錢”]; GAEO GET/POST datas are all in self.params variable Class LifeController(BaseController): def need_money(self): print self.params['缺'] print self.params['錢']

19. Get params http://example.org/welcome/about/xFjddeY Class WelcomeController(BaseController): def aboutz(self): self.params = {'id':'xFjddeY'} http://example.org/welcome/about/?user=1&is_guest=y Class WelcomeController(BaseController): def aboutz(self): self.params = {'id':'':,'user':1,'is_guest':'y'}

20. How to storage data in session? Implement by GAE memcache. PHP $_SESSION['正妹'] = "國字臉才叫正” GAEO Class GirlController(BaseController): def catch(self): self.session['正妹'] = ”國字臉才叫正” self.session['正妹'].put()

21. 推 Remember PUT 倒 self.session[' 正妹 '].put()

22. How to get data from session? PHP echo $_SESSION['正妹們'] GAEO Class GirlController(BaseController): def catched_list(self): print self.session['正妹們']

23. How to storage data in cookie? PHP $_COOKIE[' 阿宅說 '] = " 有 MSN 也沒用，我不敢跟女生說話” $_COOKIE[' 標準答案 '] = "MSN ID 都是中性的 , 在 XX 之前把他當人妖” set_cookie() GAEO Class AJaiController(BaseController): def show_anwser(self): self.cookie[' 阿宅說 '] = .... self.cookie[' 阿宅說 '] = ....

24. How to get datas from cookie? PHP echo $_COOKIE['大宅門'] GAEO Class GirlController(BaseController): def be_master(self): print self.cookie['大宅門'] # !!! KeyError: '大宅門'

25. But How to Set Expier time?

26. 404 Not Found

27. 製作簡報時 網路大斷線 所以沒什麼機會查資料

28. 簡報總是快來不及時做 但請儘量不要這樣，最起碼在還有網路時就做完… 歷來慣例，

29. How to get request Class Controller: def __demo__(self): self.request

30. View HTML / XML / JSON / More Wait! How to use template engine in GAEO?

31. Render HTML Django Template Markup Controller attribute be template variable automaticlly __dict__ Class CatchController(...): def show(self): self.viewer = {'name':' 正妹 ', ''age”:18} /project/applications/templates/catch/show .html <h1>{{viewer.name}}</h2> {{self.request}} {{self.params}}

32. Render Json Class Controller: def render_json(self): self.render(json=self.to_json({'1':'1'})

33. Render XML Google app engine model can convert to xml Class Controller: def render_xml(self): xml_content = model_obj.to_xml() self.render(xml=self.to_xml(xml_content)

34. Plugin Every application has its plugin architecture...

35. GAEO Plugin Save your time! You/Other people can write a plugin to Extends BaseController class Extends BaseModel class Extends GAEO more powerful! Help web app developement quickly and easir. Ok, It looks more like Rails.... Collection site: http://plugins.gaeo.org plugins are very few now... we need yours!

36. How does plugin work? All plugins are saved in $project/plugins Init function in main.py Load before the application started. All magic are in the file Project root ~/catchgirl/ Project Plugins Dir ~/catchgirl/plugins/ Facebook Plugin Dir ~/catchgirl/plugins/facebook plugins/facebook/__init__.py

37. Extend GAEO Controller Mix BaseContoller with plugin class. Class LazyController: def render_json(self, obj): self.render(self.to_json(obj)) from gaeo.controller import BaseController BaseController.__bases__ += (LazyController,) After plugin loaded. BaseController has the render_json method it does not have before.

38. Extend GAEO Model BaseModel can mix also. Class LazyModel: @classmethod def get_by_gameid(cls, id): obj = cls.gql(&quot;WHERE game_id =&quot;+str(id)+&quot; \ ORDER BY lastupdate_at&quot;).get() return obj from gaeo.controller import BaseController BaseModel.__bases__ += (LazyModel,) BaseModel has get_by_gameid method now.

39. Mixing? What is it meaning?

40. 七龍珠

41. 合體

42. 貝吉特 + 特南克斯 = ?

43. 貝吉特南克斯 戰力指數 ++ 還是被打掛…

44. Class 合體 指揮艦組合

45. 當然也是 戰力指數 ++ 這次絕對不會掛

46. Mix two class or more. Class Man: def love_woman() retrun true Class Woman: def love_man() retrun true Class Bat def fly() retrun true Man().love_man() Method not exists! Man.__bases__ += (Woman,) Man().love_woman() = true Man().love_man() = true Man.__bases__ += (Bat) Man().love_woman() = true Man().love_man() = true Man().fly() = true

47. How does mixin work in gaeo plugin Child class get method/attributes from its father 張無忌從謝遜身上習得七傷拳 Mixin father class with plugin class == Child class has new grandfather, and also has new feture from grandfather. 謝遜認韋小葆為乾爹，韋小葆以抓奶龍爪手聞名江湖 張無忌從謝遜身上習得七傷拳，抓奶龍爪手… 謝遜認柯珂科為乾爹，柯珂科以抓奶龍爪手聞名江湖 張無忌從謝遜身上習得七傷拳，抓奶龍爪手 , 還我漂漂拳

48. GAEO Management Tools Start new project quickly

49. Create Project Create project gaeo.py newporject Create prject with Eclipse config gaeo.py –eclipse newproject

50. Create Model Command $ gaeogen.py model money bank user Will create /project/application/model/money .py /project/application/model/bank .py /project/application/model/user.py from google.appengine.ext import db from gaeo.model import BaseModel class Money(BaseModel): pass

51. Create Contorller Command $ gaeogen.py controller money show add edit Will create /project/application/controller/money.py project/application/template/add.html project/application/template/edit.html project/application/template/edit.html from gaeo.controller import BaseController class WelcomeController(BaseController): def show(self): Pass def add(self): Pass def edit(self): pass

52. Create scaffold GAEO has scaffold also, but I never use it, becuse I wrote most common controller method in my plugin, called as lazycontroller. Lazycontroller has new_or_edit - create a model or edit it. implement edit and new in subclass. create – do create model update – do update model _storage - storage the data to datastore. implement _mk_attrs in subclass.

53. 結論

54. 小 Others all all too big, too complex

55. 易 因為小，所以目前只有一些基礎功能

56. 請愛用國貨，促進經濟發展 如果要寫GAE，我一定用GAEO 因為其它的都需要花 不少的時間學習

57. GAEO == Python On Rails? Remove google app engine depency in my wish list.

58. You Can Help GAEO Better Improvent GAEO, write totrial , develope Plugin and more

59. Refrence/Contact Officail Web Site http://www.gaeo.org Officail Document Web Site http://doc.gaeo.org (english) http://doc-zhtw.gaeo.org/ (traditional chinese) http://doc-fr.gaeo.org/ (french) Erisck's Blog Http://a.b.org GAEO Plugins Web Site http://plugins.gaeo.org GAEO Soruce Code Repositry http://code.google.com/gaeo/ GAEO Google Grouphttp://groups.google.com/group/google-app-engine-oil?hl=en IRC Server: irc.freenode.net Channel: #gaeo, #tossug Google App Engine http://code.google.com/appengine/

60. The End Any qutions?