Is there an easy way to say: else, if there was nothing looped, show 'No objects.' Seems like there should be a nice syntactical way to do this rather than calculate the length of @user.find_object("param")
You can do something like:
if @collection.blank?
# @collection was empty
else
@collection.each do |object|
# Your iteration logic
end
end
Rails view
# index.html.erb
<h1>Products</h1>
<%= render(@products) || content_tag(:p, 'There are no products available.') %>
# Equivalent to `render :partial => "product", @collection => @products
render(@products)
will return nil
when @products
is empty.
Ruby
puts "no objects" if @collection.blank?
@collection.each do |item|
# do something
end
# You *could* wrap this up in a method if you *really* wanted to:
def each_else(list, message)
puts message if list.empty?
list.each { |i| yield i }
end
a = [1, 2, 3]
each_else(a, "no objects") do |item|
puts item
end
1
2
3
=> [1, 2, 3]
each_else([], "no objects") do |item|
puts item
end
no objects
=> []
if @array.present?
@array.each do |content|
#logic
end
else
#your message here
end
I do the following:
<% unless @collection.empty? %>
<% @collection.each do |object| %>
# Your iteration logic
<% end %>
<% end %>
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