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Ruby Building Web Apps with Sinatra Updating Data Submitting the Edit Form Via PUT Request

How do i go about this one a for loop?

Does it require a loop

views/edit.erb
<p>Please enter your name below.</p>

<form method="post" action="/signatures/<%= @index %>">>
  <input type="hidden" name="_method" value="put">
  <input type="text" name="signature" value="<%= @signature %>">
  <input type="submit">
</form>
guestbook.rb
require "sinatra"

def load_signature(index)
  # Code omitted for brevity
end

# Updates the line at the given index and re-saves the file.
def update_signature(index, signature)
  lines = File.readlines("signatures.txt")
  index = index.to_i
  lines[index] = signature
  File.open("signatures.txt", "w") do |file|
    file.puts lines
  end
end

get "/:index/edit" do
  # Code omitted for brevity
end

get "/signatures/new" do
  # Code omitted for brevity
end

# ROUTE FOR PUT REQUESTS GOES HERE
put "/:title" do
  update_signature(params["index"], params["signature"])
  redirect "/#{params["index"]}"
end

1 Answer

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,717 Points

You're pretty close to solving this challenge.

# ROUTE FOR PUT REQUESTS GOES HERE
put "/signatures/:index" do
  update_signature(params["index"], params["signature"])
  redirect("/signature/new")
end