Rails - Sep 2008 - How call distance_of_time_in_words() from controller?

How call distance_of_time_in_words() from a controller instead of a
view?

Reference:
http://api.rubyonrails.org/classes/ActionView/Helpers/DateHelper.html#M001712

This page says this method is in: Module ActionView::Helpers::DateHelper

which also says is here:

in:    actionpack/lib/action_view/helpers/date_helper.rb

BUT, HOW IN THE WORLD do I get that included in my controller file?

1) This doesn''t work inside the class definition:

require "date_helper"

as I get this message:

 MissingSourceFile in MyController#datePage

no such file to load -- date_helper

2) THEN, when I try this:

helper :date_helper

I get this:

Missing helper file helpers/date_helper_helper.rb

Please help!  I bet this is cake if I just know the solution.

Thanks very much in advance,

Pete
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

You could do it this way.

class MyController
  include ActionView::Helpers::DateHelper

  def some_method
    distance_of_time_in_words ...
  end
end

I think this would also work, and would be better since it wouldn''t be
adding all of DateHelper''s methods to the controller:

def some_method
  @template.distance_of_time_in_words ...
end

-Dan
http://www.dcmanges.com

On Sep 7, 12:30 pm, Peter Alvin
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> How call distance_of_time_in_words() from a controller instead of a
> view?
>
>
Reference:http://api.rubyonrails.org/classes/ActionView/Helpers/DateHelper.html...
>
> This page says this method is in: Module ActionView::Helpers::DateHelper
>
> which also says is here:
>
> in:    actionpack/lib/action_view/helpers/date_helper.rb
>
> BUT, HOW IN THE WORLD do I get that included in my controller file?
>
> 1) This doesn''t work inside the class definition:
>
> require "date_helper"
>
> as I get this message:
>
>  MissingSourceFile in MyController#datePage
>
> no such file to load -- date_helper
>
> 2) THEN, when I try this:
>
> helper :date_helper
>
> I get this:
>
> Missing helper file helpers/date_helper_helper.rb
>
> Please help!  I bet this is cake if I just know the solution.
>
> Thanks very much in advance,
>
> Pete
> --
> Posted viahttp://www.ruby-forum.com/.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

>   include ActionView::Helpers::DateHelper
That''s what I needed; it worked; thanks!!!
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

You shouldn''t really need to call this within a controller. Rails uses
a
convention called MVC which means that the model, the view, and the
controller concerns are all separate to themselves. Here''s the
wikipedia
article on it [http://en.wikipedia.org/wiki/Model-view-controller] and
here''s an entry in the Rails'' wiki for it as well [
http://wiki.rubyonrails.org/rails/pages/UnderstandingMVC]. It''s a
really
core convention in rails. distance_of_time_in_words is purely a view concern
because it''s about output which is the view. The standard way to do
this is
to render a template [view] instead of constructing a string directly in the
controller. Hope that helps.

RSL

On Mon, Sep 8, 2008 at 7:58 AM, Peter Alvin <
rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:
>
> >   include ActionView::Helpers::DateHelper
>
> That''s what I needed; it worked; thanks!!!
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

RSL ___ wrote:
> distance_of_time_in_words is purely a view concern
> because it''s about output which is the view.
Thanks, Dan and RSL.  I think Pete might have been asking because of the 
same problem I am having right now:  I know what MVC is, but I just 
can''t for the life of me figure out how to subtract 2 dates!
I''m pulling
at straws here to find any hack that might work and this 
distance_of_time_in_words() is the closest I''ve gotten.  I have 2
fields
in an ActiveRecord model, due:date and complete:date, that I''m trying
to
find the elapsed time between.  I''d think this is just a simple matter 
of subtraction, but apparently not.  I have a strong background in C and 
Java and Python, but just recently got into Ruby (from Rails).  All I''m
trying to do is subtract these 2 fields for every instance of the model. 
This should be the simplest thing ever, but I''m missing something. 
Could someone please please clue me in?  Thanks.
-Neil
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

It looks to me like you can subtract one date var from another & get a
Rational that represents the number of days difference.  You should be able to
.to_i that to work w/it as a number.

HTH,

-Roy

-----Original Message-----
From: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
[mailto:rubyonrails-talk@googlegroups.com] On Behalf Of Neil Funk
Sent: Monday, October 06, 2008 6:15 PM
To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
Subject: [Rails] Re: How call distance_of_time_in_words() from controller?


RSL ___ wrote:
> distance_of_time_in_words is purely a view concern because it''s
about
> output which is the view.
Thanks, Dan and RSL.  I think Pete might have been asking because of the same
problem I am having right now:  I know what MVC is, but I just can''t
for the life of me figure out how to subtract 2 dates! I''m pulling at
straws here to find any hack that might work and this
distance_of_time_in_words() is the closest I''ve gotten.  I have 2
fields in an ActiveRecord model, due:date and complete:date, that I''m
trying to find the elapsed time between.  I''d think this is just a
simple matter of subtraction, but apparently not.  I have a strong background in
C and Java and Python, but just recently got into Ruby (from Rails).  All
I''m trying to do is subtract these 2 fields for every instance of the
model.
This should be the simplest thing ever, but I''m missing something.
Could someone please please clue me in?  Thanks.
-Neil
--
Posted via http://www.ruby-forum.com/.



--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Roy Pardee wrote:
> It looks to me like you can subtract one date var from another & get a 
> Rational that represents the number of days difference.  You should be 
> able to .to_i that to work w/it as a number.
Thanks, Roy.  You are quite right. The reason it wasn''t working for me 
before was that I was making a silly ruby-n00b mistake of using the 
symbols for the member variables, rather than the variables themselves! 
( :completed - :due instead of completed - due)  I didn''t do that 
anywhere else so I don''t know what I was thinking.
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---