[[TOC]]

= Tutorial =

== Sahana Eden Essential Guide ==
Have a look at the [wiki:Book Sahana Eden Essential Guide Book] and follow the tutorial chapters:
* [http://en.flossmanuals.net/sahana-eden/customisation/ Customisation]
* [http://en.flossmanuals.net/sahana-eden/building-a-new-application/ Building a New Module]
 * Older doc to merge/deprecate: [wiki:DeveloperGuidelinesNewModule How to add a new Module?]
 * real-life example: https://github.com/flavour/aidiq/commit/e352bf501295827cc1496362ceccbd6d10e4467a

== Other ==
* [wiki:DeveloperGuidelines/Tutorial/RESTCustomisation REST Customisation]

== Python ==
DeveloperGuidelines/Basics

=== MVC Architecture ===
== Model ==
Defines database tables in: {{{/modules/s3db/modulename.py}}}

The Models are loaded 1st within Web2Py processing, before the controllers.[[BR]]
So you can import any global modules/set any global variables here.[[BR]]
The Models are imported in alphabetical order, so we load the files which other modules depend on 1st, hence naming them appropriately:

{{{000_1st_run.py}}}, {{{000_config.py}}}, {{{zz_last.py}}}, etc

== View ==
HTML/Javascript templates in {{{/views/*}}}
* these are normal HTML/JS files with the ability to add in Python code (e.g. variables) surrounded by brackets: {{ interpreted python here }}
* there should be an .html file available for each function in the module (name normally being the same as the function)
* these normally inherit from {{{views/layout.html}}} which also includes the !JavaScript from {{{views/*_ajax.html}}}
* if there is no view defined then a default view will be displayed, which will show the values of all the data it can see, but not be formatted nicely

== Controller ==
Python functions in {{{/controllers/modulename.py}}} [[BR]]
e.g.
{{{
   def list_records():
       items = crud.select(table)
       return dict(items=items)
}}}    

Static CSS/Javascript files are stored in {{{/static}}}