override Rack::Request#params method because the original one ignores…

… params in bodies of PUT requests (?!)

app.rb

@@ -1,9 +1,20 @@
 require "integrity"
 require "integrity/helpers"
 require "sinatra"
+
 require "rack/contrib"
 use Rack::NestedParams
 
+Sinatra::Request.class_eval do
+  # override Rack method because the original one
+  # ignores params in bodies of PUT requests (?!)
+  def params
+    self.GET.update(self.POST)
+  rescue EOFError => e
+    self.GET
+  end
+end
+
 set :root,   Integrity.root
 set :public, Integrity.root / "public"
 set :views,  Integrity.root / "views"