How(where) to define a method that to be called by views?

ruby-talk
1

Hi,

I just dabbed Ruby on rails abit and what to know where is the right place
to define a method, that prinf some output information to views, based on
some variable.

I define a function "def foo " in contrioller but the calling from a view
"test.rhtml" give errors. I google a while and did not find a quick answer
for this. Or shall I do this in helper class?

May some one shed some light on this?

Thanks.

2

Yes that's what helpers are for.

Also, the rails-talk list is a better place to ask questions about rails.

···

On 12/6/07, Sun <as@hut.at> wrote:

Hi,

I just dabbed Ruby on rails abit and what to know where is the right place
to define a method, that prinf some output information to views, based on
some variable.

I define a function "def foo " in contrioller but the calling from a view
"test.rhtml" give errors. I google a while and did not find a quick answer
for this. Or shall I do this in helper class?

May some one shed some light on this?

--
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/

3

You'll need to post some code. It's basically done like this:
[code]
app/controllers/my_controller.rb:
class MyController < ActiveController::Base
  def index
    @somevar = 'Hi!'
  end
end

app/views/my_controller/index.rhtml:
<p><%= @somevar %></p>
[/code]
If you want to call a routine in your view, it's best to put it into
the appropriate helper class (that's what they are there for)
[code]
app/helpers/my_controller_helper.rb:
module MyControllerHelper
  def somevar
    'Hi!'
  end
end
[/code]
now your controller/view looks like this
[code]
app/controllers/my_controller.rb:
class MyController < ActiveController::Base
  def index
  end
end

app/views/my_controller/index.rhtml:
<p><%= somevar %></p>
[/code]

···

On Dec 6, 9:02 am, "Sun" <a...@hut.at> wrote:

Hi,

I just dabbed Ruby on rails abit and what to know where is the right place
to define a method, that prinf some output information to views, based on
some variable.

I define a function "def foo " in contrioller but the calling from a view
"test.rhtml" give errors. I google a while and did not find a quick answer
for this. Or shall I do this in helper class?

May some one shed some light on this?

Thanks.

4

"Reacher" <brandon.g.jones@gmail.com> wrote in message
news:f967ff7f-e2c6-43f0-8cc3-571af0151eb4@x69g2000hsx.googlegroups.com...

···

On Dec 6, 9:02 am, "Sun" <a...@hut.at> wrote:

Hi,

I just dabbed Ruby on rails abit and what to know where is the right
place
to define a method, that prinf some output information to views, based on
some variable.

I define a function "def foo " in contrioller but the calling from a view
"test.rhtml" give errors. I google a while and did not find a quick
answer
for this. Or shall I do this in helper class?

May some one shed some light on this?

Thanks.

You'll need to post some code. It's basically done like this:
[code]
app/controllers/my_controller.rb:
class MyController < ActiveController::Base
def index
   @somevar = 'Hi!'
end
end

app/views/my_controller/index.rhtml:
<p><%= @somevar %></p>
[/code]
If you want to call a routine in your view, it's best to put it into
the appropriate helper class (that's what they are there for)
[code]
app/helpers/my_controller_helper.rb:
module MyControllerHelper
def somevar
   'Hi!'
end
end
[/code]
now your controller/view looks like this
[code]
app/controllers/my_controller.rb:
class MyController < ActiveController::Base
def index
end
end

app/views/my_controller/index.rhtml:
<p><%= somevar %></p>
[/code]

thanks you guys for your prompt answers!!!, you are of great help. I am in a
hurry to revise some rails code written by others and am a complete newbie
to either rails or ruby, just borrowed one book and try to understand the
ideas. .