Agile Development With Hobo
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Agile Development With Hobo

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The next slide in the series gives more details about the wonders of Hobo.

The next slide in the series gives more details about the wonders of Hobo.

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Agile Development With Hobo Agile Development With Hobo Presentation Transcript

  • Agile Web Development with Hobo Evarist Lobo [email_address]
  • Introduction
    • Hobo is a rapid web application builder
    • It uses Ruby on rails and several plugins
    • Provides default user model and themes
    • CRUD and AJAX support
    • DRYML tagging language and libraries
    • Easily customizable
  • Prerequisites
    • Assumes basic knowledge of web development, databases, Ruby and Rails
    • For Windows: install InstantRails
    • For MacOS X: install Locomotive
    • Test that you have Ruby and Rails up and running
  • Getting started
    • Download hobo gem from hobocentral
    • Install hobo gem
  • Create Application Skeleton
    • hobo <appname>
    • Runs Rails
    • Runs Hobo App generator
    • Default theme
    • Basic user model
  • Create MySQL Database
    • Use phpmyadmin
    • <appname>_development
  • Create Model and Controller
    • cd <appname>/script/generate hobo_model <model_name>
    • creates basic files, unit tests and schema
    • cd <appname>/script/generate hobo_model_controller <model_name>
    • creates controller and helper classes
  • Add Fields
    • Add fields to your tables in the migrations scripts
    • auto dates foreign keys are Hobo options
    • rake db:migrate
  • Create Object Relationships
    • Advert
    • belongs_to :user
    • belongs_to :category
    • set_creator_attr :user
  • Start the application
    • Use Instant Rails Console to start application
    • Login signup search
    • Uses acts_as_authenticated plugin
    • Scriptaculous AJAX editor
  • Customizing Application
    • Using DRYML
    • changing the index page
    • each DRYML tag calls a Rails helper method
    • changing generated page
    • creating tags
  • Hobo Rapid tags
    • <index_page>
    • <show_page>
    • <new_page>
    • <edit_page>
    • <show_collection_page>
    • <new_in_collection_page>
  • Core and Common tags
    • repeat
    • panel
    • show
    • section
    • maincol
    • sidecol
    • display_name
    • object_link
    • new_object_link
    • count
    • with
    • join
    • if
    • else
  • Page navigation
    • <page_nav>
    • <first_page_link>
    • <last_page_link>
    • <next_page_link>
    • <previous_page_link>
    • <page_n_of_count>
  • CRUD buttons
    • <create_button>
    • <delete_button>
  • Create your own tag !
    • def :
    • Definition
    • <def tag=&quot;my_tag&quot;>This is my tag</def> Use
    • <my_tag/> Output
    • This is my tag
  • Creating tags
    • Tags with attributes
    • The attributes become local variables inside the tag.
    • Passing arbitrary values
    • Implicit context
  • Creating tag libraries
    • Use <taglib> to load tags from another Dryml file
    • Note that app/views/hobolib/application.dryml is implicitly imported into every Dryml template.
    • You can load the tags from a directory or a Ruby module
  • Using Tags from Ruby
    • Tags are just methods, they can be called from ERB scriptlets and from helpers.
    • Call with parameters or content
  • Modifying theme and stylesheet
    • Look at screencast for example
    • Many designs available at opendesigns.org
  • Hosting your Applications
    • Capistrano is a tool to deploy ruby applications
    • Lots of plugins and tutorials exist to make your applications scale with memcache
    • You can host your application with Amazon S3 and EC2
  • Resources
    • http://www.hobocentral.net
    • Download plugin
    • Look at screencasts for quickstart
    • Read the blogs
    • Read the forums
  • Contributing
    • look at code in Trac
    • Log bugs
    • Send patches/bug fixes to Tom Locke
    • Create documentation
    • Create sample applications and tutorials
  • Thank You
    • Thanks to Tom Locke and others for creating Hobo.
    • Please email me your feedback at evarist@gmail.com