parse request body for array

spec/param_parser_spec.cr

@@ -45,6 +45,34 @@ describe "ParamParser" do
       params.should eq({"name": "Serdar"})
     end
 
+    it "parses request body for array" do
+      route = Route.new "POST", "/" { }
+
+      request = HTTP::Request.new(
+        "POST",
+        "/",
+        body: "[1]",
+        headers: HTTP::Headers{"Content-Type": "application/json"},
+      )
+
+      params = Kemal::ParamParser.new(route, request).parse
+      params.should eq({"_json": [1]})
+    end
+
+    it "parses request body and query params" do
+      route = Route.new "POST", "/" { }
+
+      request = HTTP::Request.new(
+        "POST",
+        "/?foo=bar",
+        body: "[1]",
+        headers: HTTP::Headers{"Content-Type": "application/json"},
+      )
+
+      params = Kemal::ParamParser.new(route, request).parse
+      params.should eq({"foo": "bar", "_json": [1]})
+    end
+
     it "handles no request body" do
       route = Route.new "GET", "/" { }
 

src/kemal/param_parser.cr

@@ -39,10 +39,16 @@ class Kemal::ParamParser
 
   def parse_json
     return unless @request.body && @request.headers["Content-Type"]? == APPLICATION_JSON
+
     body = @request.body as String
-    json = JSON.parse(body) as Hash
-    json.each do |k, v|
-      @params[k as String] = v as AllParamTypes
+
+    case json = JSON.parse(body)
+    when Hash
+      json.each do |k, v|
+        @params[k as String] = v as AllParamTypes
+      end
+    when Array
+      @params["_json"] = json
     end
   end