nakajima

[Ruby] On Generating tables with a helper method

2008-10-18T22:40:21-07:00

You can use a partial to clean this up a bit, though it doesn't seem totally bad as is.

## view [html_rails]
<table>
  <thead> <th colspan="2">Groups</th></thead>
  <tbody>
    <%= render :partial => "group", :collection => @groups %>
  </tbody>
  <tfoot><tr><td><%= will_paginate @groups %></td></tr></tfoot>
</table>

## _group.html.erb [html_rails]
<tr>
  <td><%= image_tag group.picture %></td>
  <td>
    <h6><%=link_to h(group.name), group %></h6>
    <%= h group.description %>
  </td>
</tr>

[Ruby] On select tag with a selected option

2008-10-16T03:27:14-07:00

@adam: I see. Cool.

[Ruby] On Query String to Hash

2008-10-16T00:35:53-07:00

If you just want the query params, here's one.

## quick and dirty [ruby]
class String
  query = split(/\?/)[-1]
  parts = query.split(/&|=/)
  Hash[*parts]
end

[Ruby] On select tag with a selected option

2008-10-16T00:25:20-07:00

I like Adam's idea of using fields_for. I'd go a step further and pull the options into a helper method as well (I don't like seeing #collect inside an erb tag). Also, I'm not quite sure why there's a need for an OpenStruct there.

For the selected_option method you pasted, I thought a more meaningful name would be worthwhile, so I renamed it to current_category. The implementation I added is pretty simple, albeit crude. It definitely makes assumptions about your params that may or may not be a good idea, but I'll leave that up to you.

## In your courses_helper.rb [ruby_on_rails]
module CoursesHelper
  def category_options
    [[_("VÅ¡echny kategorie"), ""]] + @course_categories.collect {|d| [ d.title, d.id ] }
  end
  
  def current_category
    params[:search][:course_category_id] rescue nil
  end
end

## View [html_rails]
select(:search, :course_category_id,  category_options, :selected => current_category)