字符串内插中的格式化变量

Question

I have a string interpolation that looks like this:

<ul class="list-group">
            <% @top_ten_cashflows.each do |transaction|%>
            <li class="list-group-item"> <%=" #{ transaction.date.format('%b') } - #{transaction.category.name} - #{transaction.amount}"%></li>
            <%end%>
        </ul>

Rails brings up the following error when i try to format the date:

NoMethodError at /Dashboard
private method `format' called for Wed, 20 Jul 2016:Date

The controller looks as follows:

    def dashboard
    #@cashflows = current_user.cashflows
   # cashflows_sums =@cashflows.inject do |sum,element| 
     @cashflows = Cashflow.where(user_id: current_user.id).joins(:category)
    @top_ten_cashflows = @cashflows.order(:date).limit(10)

end

How do i get the date to be formatted within the string interpolation with the day and short month.

Answer 1

transaction.date.strftime('%b')

https://apidock.com/ruby/Date/strftime

Answer 2

Even better, use I18n localization Date/Time formats , it is easy, flexible and adds an extra level of customization per locale.

# app/views/home/index.html.erb
<p><%= l Time.now, format: :short %></p>

You can use the default Rails Date/Tme formats or add your custom formats.