Tag clouds

Rails
1

I was working through the simply rails book, i have completed up to
chapter 10,
now i want to add tag clouds to the welcome page ? how to do it ?

I have installed acts_as_taggable_on_steroids plugin from here
http://svn.viney.net.nz/things/rails/plugins/acts_as_taggable_on_steroids

I was going through their readme file as per the readme file i did the
following changes

  1. in app/helpers/application_helper.rb file

module ApplicationHelper

include TagsHelper

end

  1. class StoriesController < ApplicationController

    def tag_cloud

    @tags = Story.tag_counts

    end

    end
    now i am getting Story.tag_counts in the script/console

  2. in app/views/stories/index.html.erb file i have added

<% tag_cloud @tags, %w(css1 css2 css3 css4) do |tag, css_class| %>

<%= link_to tag.name, { :action => :tag, :id => tag.name }, :class

=> css_class %>

<% end %>

  1. in /public/stylesheets/style.css

i have added

.css1 { font-size: 1.0em; }

.css2 { font-size: 1.2em; }

.css3 { font-size: 1.4em; }

.css4 { font-size: 1.6em; }

after doing all these when i access http://0.0.0.0:3000/stories/

i am getting the error message as

undefined method `tag_cloud’ for #ActionView::Base:0xb5879a78

can anyone help me to correct this error ?

2

You are trying to use a controller method like a helped method. Try
moving the method to applicationhelper and seeing if that works

On 09/12/2008, at 21:56, Sulekha Mariam
<[email protected]

3

Ryan B. wrote:

You are trying to use a controller method like a helped method. Try
moving the method to applicationhelper and seeing if that works

you mean moving

def tag_cloud

@tags = Story.tag_counts

end

to app/helpers/application_helper.rb

4

On Tuesday 09 December 2008 10:49:24 Sulekha Mariam wrote:

Sulekha Mariam wrote:
[…]

def tag_cloud

[…]

now i am getting the error

Showing stories/index.html.erb where line #4 raised:

wrong number of arguments (2 for 0)

Your method accepts no argument. Try something like:

def tag_cloud(args*)

I don’t remember if this is the correct syntax. Search for
it. :slight_smile:

HTH,

Davi V.

E-mail: davividal arroba siscompar ponto com ponto br
MSN : davividal arroba msn ponto com
GTalk : davividal arroba gmail ponto com
Skype : davividal
YIM : davi_vidal
ICQ : 138815296

5

Sulekha Mariam wrote:

Ryan B. wrote:

You are trying to use a controller method like a helped method. Try
moving the method to applicationhelper and seeing if that works

you mean moving

def tag_cloud

@tags = Story.tag_counts

end

to app/helpers/application_helper.rb

i moved tag_cloud method from StoriesController to
app/helpers/application_helper.rb

now i am getting the error

Showing stories/index.html.erb where line #4 raised:

wrong number of arguments (2 for 0)

6

thanks a lot, but can you give ideas/pointers as on how to implement the
tag cloud given in the following page using rails

7

On Tuesday 09 December 2008 12:03:55 Davi V. wrote:

Showing stories/index.html.erb where line #4 raised:

wrong number of arguments (2 for 0)

Your method accepts no argument. Try something like:

def tag_cloud(args*)

irb(main):001:0> def foo(*args)
irb(main):002:1> puts args
irb(main):003:1> end
=> nil
irb(main):004:0> foo “hello”
hello
=> nil
irb(main):005:0> foo “hello”, “world”
hello
world
=> nil
irb(main):006:0> foo “hello”, “world”, “I’m alive”
hello
world
I’m alive
=> nil

HTH,

Davi V.

E-mail: davividal arroba siscompar ponto com ponto br
MSN : davividal arroba msn ponto com
GTalk : davividal arroba gmail ponto com
Skype : davividal
YIM : davi_vidal
ICQ : 138815296