Workshop 3-part 2

Review previous work:

From workshop 3-part1, we have already created:
1.) A web application named taxiapp
2.) A model named passenger
3.) A table named passengers in taxiapp_test, taxiapp_production and taxiapp_development

Use of Scaffolding in online taxi booking system

I will try to use scaffolding in online taxi booking in this time.

1.) Install plugin named scaffold for online taxi booking system in the taxiapp directory by issuing the command [ruby script\plugin install scaffolding ]

2.) Install plug-in named paginate in the taxiapp directory by issuing the command
[ruby script/plugin install svn://errtheblog.com/svn/plugins/classic_pagination]

REMARK: if the web site is not available, you can download the classic_pagination package from web and place it in yourApplicationDir\vendor\plugins\., or send a package request mail to me at samkwongfw@gmail.com

3. Install plugin named validates_date_time and date_time_text_field_helpers.

4.) Code generation of explicit controller and view for customizable interface by issuing the command in the taxiapp directory - "ruby script/generate scaffold passenger".

5.) Modify the controller file named passengers_controller.rb from using erb format to rhtml format, for example:
format.html # index.html.erb to format.html # index.rhtml
format.html # show.html.erb to format.html # show.rhtml
format.html # new.html.erb to format.html # new.rhtml

6.) Rename the view file from *.html.erb to *.rhtml.

7.) Configure Dreamweaver to support rhtml format in order to create a beautiful interface.

• Download Rybyweaver from http://rubtweaver.gilluminate.com/download
• Install rubweaver by double-click the mxp file, then, it will be automatically started the installer.

8.) Create a simple search engine for this web application

• In the model, defines a fuction with following code:

def self.search(search)

if search find(:all, :conditions => ['name LIKE ?', "%#{search}%"]) else find(:all) end

end

• In the controller, tell it to use that search function in index page

@passengers = Passenger.search(params[:search])

• In the index page of view, call the search function in the defined interface with following code

text_field_tag :search, params[:search]

submit_tag "Search", :name => nil

9.) Create a Job ID auto-generator with following code

• @getResultSetJobID = Passenger.find(:all).last.job_id
• @newJobID = @getResultSetJobID+1 %>

10.) Define Input Validation in model

validates_date :date

validates_time :time_required

validates_presence_of :name,:contact_number,:suburb_origin,:street,:street_number,:suburb_destination,:message=>'Error Message: Field cannot be empty'

11.) Test the application by

• 1. Create a new order - ok
• a.) Auto create the job ID -ok
• b.) Input Vaildation -k
• 2. Show the new order - ok
• 3. Edit the new order 0k
• 4. Search the new order ok
• 5. Destory the new order -ok

Please see the video for referance