CODEWITHSUNDEEP
ruby-on-railsruby
Jay
Jay

Reputation: 6244

How do i see if a "file_name" is contained in @files?

In my controller i have the following:

@documents = Document.find(:all, :order => "section asc, sub_section asc, position asc, name asc")
@files = Dir.glob("public/downloads/*").sort

In my view i have the following:

<% @documents.each do |d| -%>
    <tr class="<%= cycle("","alt") %>">
        <td><%= d.name %></td>
        <td><%= d.file_name %></td>
        <td><%= d.description %></td>
        <td>
            <%= link_to "Edit", edit_document_path(d) %><br>
            <%= link_to "Del", document_path(d), :confirm => "Are you sure boogerhead?", :class => "destroy", :method => :delete %>
        </td>
    </tr>
<% end -%>

If file_name is not contained in @files then the link on another page that is dependent on that name (file_name) will not work. If there is not a match, I'll color code file_name to indicate there is a problem. How do i check to see if file_name is contained in @files?

Thanks

Upvotes: 0

Views: 133

Answers (2)

corroded
corroded

Reputation: 21564

You can also check if a file exists somewhere in your @directory loop:

File.exist?(file_path)

or if I'm reading your code right, you're checking if a document has a certain file, right? If that is so, why not use paperclip gem so you can add an association that your document should have a file.

Or if that's not possible, you can still transfer that logic into your Document model like so:

 def has_file
   File.exist?("public/downloads/#{file_name}")
 end

then in your loop,

<% @documents.each do |d| -%>
  <% if d.has_file %>
    <tr class="<%= cycle("","alt") %>">
      <td><%= d.name %></td>
      <td><%= d.file_name %></td>
      <td><%= d.description %></td>
      <td>
        <%= link_to "Edit", edit_document_path(d) %><br>
        <%= link_to "Del", document_path(d), :confirm => "Are you sure boogerhead?", :class => "destroy", :method => :delete %>
      </td>
    </tr>
  <% end %>
<% end -%>

Upvotes: 0

sepp2k
sepp2k

Reputation: 370112

The Array#include? method checks whether a given item is contained in an array, so you can do:

if @files.include?(d.file_name)
  # It is included
else
  # It isn't
end

Upvotes: 2

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