For 2021 - online Python 3 training - see ((here)).
Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.
Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Ruby of Rails - cleanly displaying model data in the view
The display of data from our model has - thus far - been formatted in the Controller (when that really ought be in the view) and has been liable to fail to display properly if the data contains HTML special characters such as < and &. The solution to this is provided for you by rails - simply pass through the model object to be displayed to the view, and use the h
method therein to "webify" the data.
1. Pass the complete object that you want to display through the controller into the view
2. In the view, use the
@main_result = "-"
stockdata = Product.all
stockdata.each do |stock|
if stock.pname == params[:name] # Params is from a "form"
@info = stock
h function on individual member fields to ensure that they're cleaned on output
<h1>Single Record Report</h1>
To revert to product list: <b><%= @main_result %></b><br /><br />
All about the product: <b><%= h @info.pname %></b><br />
Price: <%= h @info.unitprice %><br />
Quantity: <%= h @info.stocklevel %>
<br /><br />
| This is one of a series of summaries taking you from initial installation of Ruby and Rails through to a complete multitable application:|
[link] - Installing Ruby and Rails
[link] - Hello World, Ruby on Rails Style
[link] - What and Why - Model, View, Controller
[link] - Multiple views, same model
[link] - A form to allow data to be added to the model
[link] - Validating data entries for storage in the model
[link] - Cleanly viewing model data
[link] - Complete sample, including a multiple table model
These topics are covered on our Introduction to Rails day - an optional extension of Ruby Programming or Learning to program in Ruby
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articlesR202 - Ruby on Rails 
The HTML++ Metalanguage - (2007-01-22) 
Ruby, Ruby, Ruby. Rails, Rails, Rails. - (2007-08-13) 
Python v Ruby - (2007-10-02) 
Moodle, Drupal, Django (and Rails) - (2008-08-08) 
Ruby on Rails - a sample application to teach you how - (2010-01-30) 
Answers on Ruby on Rails - (2010-01-30) 
Scope of variables - important to Ruby on Rails - (2010-01-31) 
Why do we need a Model, View, Controller architecture? - (2012-02-25) 
Ruby on Rails - how it flows, and where the files go - (2012-06-08) 
Hello World - Ruby on Rails - a checklist of each step - (2012-06-22) 
Multiple views in a single appication - sharing common parts of the template - Ruby on Rails - (2012-06-23) 
Providing a form to allow the user to add data to the model - Ruby on Rails - (2012-06-23) 
Adding validation to form entries and sticky fields - Ruby on Rails - (2012-06-23) 
What is a web framework? - (2012-11-10) 
Really Simple Rails - (2013-02-17) 
Web Frameworks - nested templates - (2013-02-22)
Some other Articles
Steam train calls at Melksham - PicturesLoad path, load and require in Ruby, and a change from 1.8 to 1.9Standard methods available on all objects in RubyPrivate, Protected, Public in Ruby. What about interfaces and abstract classes in Ruby?Ruby of Rails - cleanly displaying model data in the viewSome traps it's so easy to fall into in designing your web siteAlan Turing - 1912 to 1954
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This is a page archived from The Horse's Mouth at
the diary and writings of Graham Ellis.
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releases, price changes, new techniques. Please check back via
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