CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3if-statementswitch-statement
Richlewis
Richlewis

Reputation: 15384

If/else Rails what to look for?

I cant figure out what parameters to select for comparison for the following scenario.

I want to link to a specific page on my site depending upon which scope is being used to grab the data being presented on my home page..Is this possible?

For example I have a posts and departments model, relationships as so

Post 

belongs_to :department

Department

belongs_to :post

I grab the posts via a scope and then have a method to grab the first post from its scope.

scope :tynewydd_posts, :include => :department, :conditions => {"departments.name" => "Ty Newydd"}, :order => "posts.published_on DESC"
scope :woodside_posts, :include => :department, :conditions => {"departments.name" => "Woodside"}, :order => "posts.published_on DESC"

Then to show the first post from each

def self.top_posts
#Array with each of the 4 departments - first record
top_posts = [
  self.tynewydd_posts.first,
  self.woodside_posts.first,
  self.sandpiper_posts.first,
  self.outreach_posts.first
]
#remove entry if nil
top_posts.delete_if {|x| x==nil}
return top_posts
end

In my view then i iterate through the top posts

<% @toppost.each do |t| %>
<%= link_to 'Read more' %> <!-- Want to put a helper method here -->

<% end %>

Routes

/tynewyddnews #tynewydd_posts
/woodsidenews #woodside_posts

Within the @toppost instance variable i have the attribute department.name available, i access via t.department.name in my .each loop.

How would i go about saying "if @toppost.department.name == "xxxx" then link_to "/path" for example. just looking for some tips on structure or if this can be converted into a case statement then that would be even better

Thanks

Upvotes: 0

Views: 112

Answers (1)

Zippie
Zippie

Reputation: 6088

You could use a hash instead of a array, and then only return the key's since you won't be needing their values:

def self.top_posts
   top_posts = { "tynewydd" => self.tynewydd_posts.first, 
              "woodside" => self.woodside_posts.first,
              "sandpiper" => self.sandpiper_posts.first,
              "outreach" => self.outreach_posts.first
               }
   top_posts.delete_if {|x| x.value==nil}
   return top_posts.keys
end

Now you are getting an array of the hash keys like this: ["tynewydd","woodside",..]

And in your view:

<% @toppost.each do |t| %>
      <%= link_to 'Read more', "#{t}news_path" %>
<% end %>

Upvotes: 1

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