Ticket #7406: json_inputs.patch

django/newforms/widgets.py

@@ -18 +18 @@
 from util import flatatt
 
 __all__ = (
-    'Widget', 'TextInput', 'PasswordInput',
+    'Widget', 'TextInput', 'PasswordInput', 'JsonInputs',
     'HiddenInput', 'MultipleHiddenInput',
     'FileInput', 'DateTimeInput', 'Textarea', 'CheckboxInput',
     'Select', 'NullBooleanSelect', 'SelectMultiple', 'RadioSelect',
@@ -157 +157 @@
         return mark_safe(u'<textarea%s>%s</textarea>' % (flatatt(final_attrs),
                 conditional_escape(force_unicode(value))))
 
+class JsonInputs(Widget):
+    def render(self, name, value, attrs=None):
+        import simplejson
+        if value is None: value = '{}'
+        value = simplejson.loads(force_unicode(value))
+        ret = ''
+        if value and len(value) > 0:
+            for key in value.keys():
+                ret += '<input type="text" name="json_key[]" value="%s"> <input type="text" name="json_value[]" value="%s"><br />' % (key, value[key])
+        ret += '<input type="text" name="json_key[]"> <input type="text" name="json_value[]">'
+        return mark_safe(ret)
+    def value_from_datadict(self, data, files, name):
+        json = data.copy()
+        if json.has_key('json_key[]') and json.has_key('json_value[]'):
+            keys = json.getlist("json_key[]")
+            values = json.getlist("json_value[]")
+            jsonDict = {}
+            for (key, value) in map(None, keys, values):
+                if len(key) > 0:
+                    jsonDict[key] = value
+            import simplejson
+            text = simplejson.dumps(jsonDict)
+            json['text'] = text
+        return super(JsonInputs, self).value_from_datadict(json, files, name)
+
 class DateTimeInput(Input):
     input_type = 'text'
     format = '%Y-%m-%d %H:%M:%S'     # '2006-10-25 14:30:59'