diff --git a/spec/param_parser_spec.cr b/spec/param_parser_spec.cr
index 4c1992f..1ee5b2c 100644
--- a/spec/param_parser_spec.cr
+++ b/spec/param_parser_spec.cr
@@ -2,101 +2,98 @@ require "./spec_helper"
 
 describe "ParamParser" do
   it "parses query params" do
-    route = Route.new "POST", "/" do |env|
-      hasan = env.params.query["hasan"]
-      "Hello #{hasan}"
-    end
     request = HTTP::Request.new("POST", "/?hasan=cemal")
     query_params = Kemal::ParamParser.new(request).query
     query_params["hasan"].should eq "cemal"
   end
 
-  it "parses multiple values for query params" do
-    route = Route.new "POST", "/" do |env|
-      hasan = env.params.query["hasan"]
-      "Hello #{hasan}"
-    end
-    request = HTTP::Request.new("POST", "/?hasan=cemal&hasan=lamec")
-    query_params = Kemal::ParamParser.new(request).query
-    query_params.fetch_all("hasan").should eq ["cemal", "lamec"]
-  end
-
-  it "parses url params" do
-    kemal = Kemal::RouteHandler::INSTANCE
-    kemal.add_route "POST", "/hello/:hasan" do |env|
-      "hello #{env.params.url["hasan"]}"
-    end
-    request = HTTP::Request.new("POST", "/hello/cemal")
-    # Radix tree MUST be run to parse url params.
-    io_with_context = create_request_and_return_io(kemal, request)
-    url_params = Kemal::ParamParser.new(request).url
-    url_params["hasan"].should eq "cemal"
-  end
-
-  it "decodes url params" do
-    kemal = Kemal::RouteHandler::INSTANCE
-    kemal.add_route "POST", "/hello/:email/:money/:spanish" do |env|
-      email = env.params.url["email"]
-      money = env.params.url["money"]
-      spanish = env.params.url["spanish"]
-      "Hello, #{email}. You have #{money}. The spanish word of the day is #{spanish}."
-    end
-    request = HTTP::Request.new("POST", "/hello/sam%2Bspec%40gmail.com/%2419.99/a%C3%B1o")
-    # Radix tree MUST be run to parse url params.
-    io_with_context = create_request_and_return_io(kemal, request)
-    url_params = Kemal::ParamParser.new(request).url
-    url_params["email"].should eq "sam+spec@gmail.com"
-    url_params["money"].should eq "$19.99"
-    url_params["spanish"].should eq "año"
-  end
-
-  it "parses request body" do
-    route = Route.new "POST", "/" do |env|
-      name = env.params.query["name"]
-      age = env.params.query["age"]
-      hasan = env.params.body["hasan"]
-      "Hello #{name} #{hasan} #{age}"
-    end
-
-    request = HTTP::Request.new(
-      "POST",
-      "/?hasan=cemal",
-      body: "name=serdar&age=99",
-      headers: HTTP::Headers{"Content-Type" => "application/x-www-form-urlencoded"},
-    )
-
-    query_params = Kemal::ParamParser.new(request).query
-    {"hasan" => "cemal"}.each do |k, v|
-      query_params[k].should eq(v)
-    end
-
-    body_params = Kemal::ParamParser.new(request).body
-    {"name" => "serdar", "age" => "99"}.each do |k, v|
-      body_params[k].should eq(v)
+  context "#query" do
+    it "parses multiple values for query params" do
+      request = HTTP::Request.new("POST", "/?hasan=cemal&hasan=lamec")
+      query_params = Kemal::ParamParser.new(request).query
+      query_params["hasan"].should eq ["cemal", "lamec"]
     end
   end
 
-  it "parses multiple values in request body" do
-    route = Route.new "POST", "/" do |env|
-      hasan = env.params.body["hasan"]
-      "Hello #{hasan}"
+  context "#url" do
+    it "parses url params" do
+      kemal = Kemal::RouteHandler::INSTANCE
+      kemal.add_route "POST", "/hello/:hasan" do |env|
+        "hello #{env.params.url["hasan"]}"
+      end
+      request = HTTP::Request.new("POST", "/hello/cemal")
+      # Radix tree MUST be run to parse url params.
+      io_with_context = create_request_and_return_io(kemal, request)
+      url_params = Kemal::ParamParser.new(request).url
+      url_params["hasan"].should eq "cemal"
     end
 
-    request = HTTP::Request.new(
-      "POST",
-      "/",
-      body: "hasan=cemal&hasan=lamec",
-      headers: HTTP::Headers{"Content-Type" => "application/x-www-form-urlencoded"},
-    )
-
-    body_params = Kemal::ParamParser.new(request).body
-    body_params.fetch_all("hasan").should eq(["cemal", "lamec"])
+    it "decodes url params" do
+      kemal = Kemal::RouteHandler::INSTANCE
+      kemal.add_route "POST", "/hello/:email/:money/:spanish" do |env|
+        email = env.params.url["email"]
+        money = env.params.url["money"]
+        spanish = env.params.url["spanish"]
+        "Hello, #{email}. You have #{money}. The spanish word of the day is #{spanish}."
+      end
+      request = HTTP::Request.new("POST", "/hello/sam%2Bspec%40gmail.com/%2419.99/a%C3%B1o")
+      # Radix tree MUST be run to parse url params.
+      io_with_context = create_request_and_return_io(kemal, request)
+      url_params = Kemal::ParamParser.new(request).url
+      url_params["email"].should eq "sam+spec@gmail.com"
+      url_params["money"].should eq "$19.99"
+      url_params["spanish"].should eq "año"
+    end
   end
 
-  context "when content type is application/json" do
+  context "#body" do
     it "parses request body" do
-      route = Route.new "POST", "/" { }
+      request = HTTP::Request.new(
+        "POST",
+        "/?hasan=cemal",
+        body: "name=serdar&age=99",
+        headers: HTTP::Headers{"Content-Type" => "application/x-www-form-urlencoded"},
+      )
 
+      query_params = Kemal::ParamParser.new(request).query
+      {"hasan" => "cemal"}.each do |k, v|
+        query_params[k].should eq(v)
+      end
+
+      body_params = Kemal::ParamParser.new(request).body
+      {"name" => "serdar", "age" => "99"}.each do |k, v|
+        body_params[k].should eq(v)
+      end
+    end
+
+    it "parses multiple values in request body" do
+      request = HTTP::Request.new(
+        "POST",
+        "/",
+        body: "hasan=cemal&hasan=lamec",
+        headers: HTTP::Headers{"Content-Type" => "application/x-www-form-urlencoded"},
+      )
+
+      body_params = Kemal::ParamParser.new(request).body
+      body_params["hasan"].should eq(["cemal", "lamec"])
+    end
+
+    it "parses array values in request body" do
+      request = HTTP::Request.new(
+        "POST",
+        "/",
+        body: "framework=kemal&feats[]=fast&feats[]=effective&feats[]=simple",
+        headers: HTTP::Headers{"Content-Type" => "application/x-www-form-urlencoded"},
+      )
+
+      body_params = Kemal::ParamParser.new(request).body
+      body_params["framework"].should eq("kemal")
+      body_params["feats[]"].should eq(["fast", "effective", "simple"])
+    end
+  end
+
+  context "#json" do
+    it "parses request body" do
       request = HTTP::Request.new(
         "POST",
         "/",
@@ -109,8 +106,6 @@ describe "ParamParser" do
     end
 
     it "parses request body when passed charset" do
-      route = Route.new "POST", "/" { }
-
       request = HTTP::Request.new(
         "POST",
         "/",
@@ -123,8 +118,6 @@ describe "ParamParser" do
     end
 
     it "parses request body for array" do
-      route = Route.new "POST", "/" { }
-
       request = HTTP::Request.new(
         "POST",
         "/",
@@ -137,8 +130,6 @@ describe "ParamParser" do
     end
 
     it "parses request body and query params" do
-      route = Route.new "POST", "/" { }
-
       request = HTTP::Request.new(
         "POST",
         "/?foo=bar",
@@ -156,8 +147,6 @@ describe "ParamParser" do
     end
 
     it "handles no request body" do
-      route = Route.new "GET", "/" { }
-
       request = HTTP::Request.new(
         "GET",
         "/",
@@ -180,13 +169,6 @@ describe "ParamParser" do
 
   context "when content type is incorrect" do
     it "does not parse request body" do
-      route = Route.new "POST", "/" do |env|
-        name = env.params.body["name"]
-        age = env.params.body["age"]
-        hasan = env.params.query["hasan"]
-        "Hello #{name} #{hasan} #{age}"
-      end
-
       request = HTTP::Request.new(
         "POST",
         "/?hasan=cemal",
diff --git a/src/kemal/ext/params.cr b/src/kemal/ext/params.cr
new file mode 100644
index 0000000..5451842
--- /dev/null
+++ b/src/kemal/ext/params.cr
@@ -0,0 +1,8 @@
+module HTTP
+  struct Params
+    def [](name)
+      params = raw_params[name]
+      params.size == 1 ? params.first : params
+    end
+  end
+end
diff --git a/src/kemal/ext/request.cr b/src/kemal/ext/request.cr
index f027de5..af182fb 100644
--- a/src/kemal/ext/request.cr
+++ b/src/kemal/ext/request.cr
@@ -1,5 +1,5 @@
 class HTTP::Request
-  property override_method
+  property override_method : String?
   property url_params : Hash(String, String)?
   getter param_parser : Kemal::ParamParser?
 
@@ -21,7 +21,7 @@ class HTTP::Request
       @param_parser = Kemal::ParamParser.new(self)
       params = @param_parser.not_nil!.body
       if params.has_key?("_method") && HTTP::Request.override_method_valid?(params["_method"])
-        @override_method = params["_method"]
+        @override_method = params["_method"].as(String)
       end
     end
     @override_method