Handle widgets

flaskapp/app.py

 from flask import Flask, render_template, request, send_from_directory, abort, jsonify, Response
 from flask_cors import CORS
-from wtforms import Form, IntegerField, SubmitField
+from wtforms import Form
+from widgets import *
 from os.path import join
 import traceback
 
@@ -115,7 +116,8 @@ def catchall(path):
             class ParamForm(Form):
                 pass
             for k, v in f.parameters.iteritems():
-                setattr(ParamForm, k, IntegerField("%s: " % k, default=v))
+                md = f.metadata.get(k, {})
+                setattr(ParamForm, k, MyField("%s: " % k, md, default=v))
             return render_template("combined.html", component=component, query=request.query_string, form=ParamForm())
 
         print component

flaskapp/widgets.py

+from wtforms.fields.html5 import DecimalField
+from wtforms.widgets import html5 as widgets
+
+class MyField(DecimalField):
+    def __init__(self, label=None, md=None, **kwargs):
+        super(DecimalField, self).__init__(label, **kwargs)
+        self.widget = widgets.NumberInput()
+        if md:
+            self.widget.min = md.get("min", None)
+            self.widget.max = md.get("max", None)
+            self.widget.step = md.get("step", None)