The document outlines the agenda for a Sahana Eden technical workshop being held over two days. Day 1 covers installing a developer environment, building applications, modifying existing applications, Git and GitHub. Breakout sessions and a code sprint are scheduled for Day 2. Sessions will teach attendees how to define models, add controllers and views, and modify existing Sahana Eden applications. The workshop aims to help attendees get started developing applications for the Sahana Eden platform.

1. Sahana Eden
Technical Workshop
Fran Boon
fran@sahanafoundation.org
SahanaCamp NYC 1

2. Agenda
Thursday
 10:30 Installing a Developer Environment
 11:30 Building your own Applications
 12:00 Lunch
 13:00 Building your own Applications
 13:30 Resources
 14:00 Building your own Applications
 14:30 Modifying existing Applications
 15:45 Git and GitHub
 16:25 Plan Breakout Sessions
 17:00 Adjourn
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3. Agenda
Friday
 09:00 Breakout Sessions
 10:45 Code Sprint: Your Projects
 12:00 Working Lunch
 13:00 Next Steps
 13:30 Community Resources
 14:00 Adjourn
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4. Building your own
Applications
Fran Boon
fran@sahanafoundation.org
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5. Whitespace Matters
Unlike other languages which use parentheses to
delimit code blocks {...}, Python instead uses White
Space
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6. Debug Mode
models/000_config.py
deployment_settings.base.debug = True
 Reloads modules/eden every request
 CSS & JavaScript unminified
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7. Training Module
Resource: 'Course'
 Name
 Date / Time
 Location: Venue
 Facilitator
 Welcome Pack
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8. Define the Basic Data Model
models/training.py
tablename = "training_course"
db.define_table(tablename,
Field("name"),
Field("start"),
Field("facilitator"),
)
 Table Name: module_resource
 Database 'migrated' automatically
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9. Add a Controller
controllers/training.py
def course():
return s3_rest_controller()
 Functions map URLs to code
& resources
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10. Try it out!
http://127.0.0.1:8000/eden/training/course
 List
 Create
 Read
 Update
 Delete
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11. Other Formats
http://127.0.0.1:8000/eden/training/course .xls
http://127.0.0.1:8000/eden/training/course .xml
http://127.0.0.1:8000/eden/training/course .json
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12. Pivot Table Reports
http://127.0.0.1:8000/eden/training/course /report
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13. Field Types
models/training.py
Field("start", "datetime"),
Field("welcome_pack", "upload"),
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14. Field Labels
models/training.py
Field("start", "datetime",
label=T("Start Date")),
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15. Links to other Resources
models/training.py
tablename = "training_course"
db.define_table(tablename,
Field("name"),
Field("start", "datetime",
label = "Start Date"),
s3db.pr_person_id(label="Facilitator"),
Field("welcome_pack", "upload"),
)
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16. Links to other Resources
models/training.py
tablename = "training_course"
db.define_table(tablename,
Field("name"),
Field("start", "datetime",
label = "Start Date"),
s3db.pr_person_id(label="Facilitator"),
s3db.super_link("site_id","org_site"),
Field("welcome_pack", "upload"),
)
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17. Links to other Resources
models/training.py
s3db.super_link("site_id", "org_site",
label = "Venue",
readable = True,
writable = True,
represent = s3db.org_site_represent,
),
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18. Menus: Top level
models/000_config.py
deployment_settings.modules = OrderedDict([
("training", Storage(
name_nice = "Training",
module_type = 1,
)),
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19. Menus: 2nd level
modules/eden/menus.py
class S3OptionsMenu:
def training(self):
return M(c="training")(
M("Courses", f="course")(
M("New", m="create"),
M("List All"),
M("Report", m="report"),
)
)
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20. Module Index Page
http://127.0.0.1:8000/eden/training/index
controllers/training.py
def index():
return dict()
 Pass control to a view template
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21. Module Index Page
views/training/index.html
{{extend "layout.html"}}
<H1>Welcome to the Training Module</H1>
<UL>
<LI>Browse the Course List
</UL>
 HTML with Python inside {{..}}
 Extend layout.html for basic look and feel
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22. Module Index Page
views/training/index.html
{{extend "layout.html"}}
<H2>Welcome to the Training Module</H2>
<UL>
<LI>Browse the {{=A("Course List",
_href=URL(c="training", f="course"))}}
</UL>
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23. Resources
Dominic Koenig
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24. Components
Participants of a Course
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25. Components
Participants of a Course
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26. Components
models/training.py
tablename = "training_participant"
db.define_table(tablename,
s3db.pr_person_id(),
Field("course_id",
db.training_course
)
)
s3db.add_component("training_participant",
training_course="course_id")
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27. Resource Header
controllers/training.py
def course_rheader(r):
if r.record:
tabs = [("Basic Details", None),
("Participants", "participant")
]
rheader_tabs = s3_rheader_tabs(r, tabs)
rheader = DIV(TABLE(
TR(TH("Name: "),
r.record.name),
), rheader_tabs)
return rheader
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28. Resource Header
controllers/training.py
def course():
return s3_rest_controller(rheader=course_rheader)
http://127.0.0.1:8000/eden/training/course/1/participant
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29. Modifying Existing
Applications
Fran Boon
fran@sahanafoundation.org
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30. Which file do I edit?
Each module will have:
 Model: modules/eden/modulename.py
 View: views/modulename/index.html
There may be additional view files for custom pages
 Controller: controllers/modulename.py
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31. Web2Py URL Mapping
http://host/application/controller/function
eg: http://127.0.0.1:8000/eden/default/index
 Model: not applicable here
 View: web2py/applications/eden/views/default/index.html
 Controller: web2py/applications/eden/controllers/default.py
 Function: def index():
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32. Sahana Eden URL Mapping
http://host/eden/module/resource
eg: http://127.0.0.1:8000/eden/org/site
 Model: web2py/applications/eden/modules/eden/org.py
 tablename = "org_site"
 View: not applicable here
 Controller: web2py/applications/eden/controllers/org.py
 Function: def site():
return s3_rest_controller()
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33. Views
Generic View:
web2py/applications/eden/views/_list_create.html
If you want to create a custom view then:
Custom View:
web2py/applications/eden/views/org/site_list_create.html
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34. Edit a Field Label
modules/eden/org.py
tablename = "org_organisation"
...
Field("donation_phone",
label = T("Donation Phone Number"),
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35. Hide a Field
modules/eden/org.py
tablename = "org_office"
...
Field("type",
"integer
readable=False,
writable=False,
label=T("Type")),
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36. Add a New Field
modules/eden/org.py
tablename = "org_organisation"
...
Field("facebook", label=T("Facebook Page")),
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37. Edit the Menus
modules/eden/menus.py
def org(self):
""" ORG / Organization Registry """
return M(c="org")(
M("Organizations", f="organisation")(
M("New", m="create"),
M("List All"),
M("Search", m="search"),
M("Import", m="import")
),
M("Venues", f="office")(
M("New", m="create"),
M("List All"),
#M("Search", m="search"),
M("Import", m="import")
),
)
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38. Git and GitHub
Fran Boon
fran@sahanafoundation.org
SahanaCamp NYC 38

39. Agenda
Installing Git
Creating your own Branch
Sharing your Code with the Community
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40. Installing Git
GitHub.com has excellent instructions
Create SSH public/private keys
ssh-keygen -t rsa -C “my_email@email.com”
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41. Creating your Branch
https://github.com/flavour/eden
Get local copy: git clone git@github.com:myname/eden.git
Stay up date: git pull upstream master
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42. Sharing your Code
Commit code locally: git commit -a
Push to GitHub: git push
Submit Pull Request to get code merged into Trunk
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