The models project and category are in a has_and_belongs_to_many relationship. The partial seen below is used on different views to show a dropdown-menu with all the available categories. The projects in the list below the dropdown-menu are shown according to the choice the user made in the dropdown-menu.
Besides other categories, there is a category named "Everything" that every project is member of. It's also the first entry in the category-db-table, because it got inserted in while loading the migrations into the database.
Right now there is no error, but regardless of which category I choose it reloads the page showing the "Everything" category.
Any idea what I need to change in the code mentioned below to make it work the way I want to? Thanks for your help!
Partial with dropdown-menu and project-list
<!-- category dropdown -->
<% form_for category_url(:id), :html => {:method => :get} do |f| %>
<label>Categories</label>
<%= f.collection_select(:category_ids , Category.find(:all), :id , :name) %>
<%= f.submit "Show" %>
<% end %>
<!-- project list -->
<ul class="projectlist">
<% @projects.each do |_project| %>
<li>
<%= link_to(_project.name, _project) %>
</li>
<% end %>
</ul>
Logoutput after choosing category with id 2 on the dropdown-menu
Processing ProjectsController#index (for 127.0.0.1 at 2009-02-20 17:26:10) [GET]
Parameters: {"commit"=>"Show", "http://localhost:3000/categories/id"=>{"category_ids"=>"2"}}
Category Model
class Category < ActiveRecord::Base
has_and_belongs_to_many :projects, :join_table => "categories_projects"
end
Categories Controller
class CategoriesController < ApplicationController
def show
@projects = Category.find(params[:id]).projects.find(:all)
respond_to do |format|
format.html # show.html.erb
end
end
end
Project Model
class Project < ActiveRecord::Base
has_and_belongs_to_many :categories, :join_table => "categories_projects"
end
Projects Controller
class ProjectsController < ApplicationController
def show
@projects = Project.find(:all)
@project = Project.find(params[:id])
respond_to do |format|
format.html # show.html.erb
end
end
def index
@projects = Project.find(:all)
respond_to do |format|
format.html # index.html.erb
end
end
end
part of 'rake routes' output
category GET /categories/:id {:controller=>"categories", :action=>"show"}