CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3
Rails beginner
Rails beginner

Reputation: 14514

Rails how to remove last comma in array?

In my JSON view I have:

[
<% @sog.each do |kon| %>
{"id":"<%= kon.id %>","titel":"<%= kon.titel.force_encoding("UTF-8") %>","url":"<%= kon.photo.image.url %>"},
<% end %>
]

How do I remove the last comma in the loop? The JSON is not working because there is a comma in the end.

Upvotes: 0

Views: 1625

Answers (2)

Rocky
Rocky

Reputation: 304

Another meaningful and simplest way of doing it would be

@json_obj = []

@sog.each do |kon|
   @json_obj << {"id":"kon.id",
                 "titel":"kon.titel.force_encoding('UTF-8')",
                 "url":"kon.photo.image.url"
                }

You don't need to worry about the comma anymore. Hope this helps.

Upvotes: 0

Dave Newton
Dave Newton

Reputation: 160311

Several options, but one is use each_with_index and add the comma iff it's not the last iteration.

You could collect JSON strings and join them with ",", eliminating the need to check.

Or create a method that serializes the object to JSON, avoiding all the busywork in the view layer.

Upvotes: 3

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