erp5_json_form: code style changes

- Update double quotes instead of single quotes
- Avoid using RegEx to update JSON

bt5/erp5_json_form/ModuleComponentTemplateItem/portal_components/document.erp5.JSONForm.py

@@ -29,7 +29,6 @@ import json
 import jsonschema
 from erp5.component.document.JSONType import JSONType
 from erp5.component.document.TextDocument import TextDocument
-import re
 
 from AccessControl import ClassSecurityInfo
 from Products.ERP5Type import Permissions, PropertySheet
@@ -39,8 +38,8 @@ class JSONForm(JSONType, TextDocument):
   """
   Represents a form with JSON Form
   """
-  meta_type = 'ERP5 Text Document'
-  portal_type = 'JSON Form'
+  meta_type = "ERP5 Text Document"
+  portal_type = "JSON Form"
 
   # Declarative security
   security = ClassSecurityInfo()
@@ -68,7 +67,7 @@ class JSONForm(JSONType, TextDocument):
       else:
         raise ValueError(json.dumps(validation_result))
     if self.getAfterMethodId():
-      return getattr(getattr(self, 'aq_parent', None), self.getAfterMethodId())(json_data, self)
+      return getattr(getattr(self, "aq_parent", None), self.getAfterMethodId())(json_data, self)
     return "Nothing to do"
 
   def validateJSON(self, json_data, list_error=False):
@@ -90,22 +89,18 @@ class JSONForm(JSONType, TextDocument):
     return True
 
   def returnSchema(self, schema, path, REQUEST):
-    regex = re.compile(r'"\$id": "(([^"])*)"')
-    result = regex.search(schema)
-    schema_id = self.absolute_url().strip() + path
-    if result:
-      schema = schema.replace(result.group(1), schema_id, 1)
-      #print data
-    else:
-      schema = schema.replace("{", '{\n  "$id": "%s",' % schema_id, 1)
+    schema = json.loads(schema)
+    schema["$id"] = self.absolute_url().strip() + path
+
     if REQUEST is not None:
       control = []
-      control.append( 'max-age=3600' )
-      control.append( 'private' )
-      REQUEST.RESPONSE.setHeader('Cache-control', ', '.join( control ) )
-    return schema
+      control.append("max-age=3600")
+      control.append("private")
+      REQUEST.RESPONSE.setHeader("Cache-control", ", ".join(control))
+
+    return json.dumps(schema, indent=2).encode()
 
-  security.declarePublic('getOutputJSONSchema')
+  security.declarePublic("getOutputJSONSchema")
   @UnrestrictedMethod
   def getOutputJSONSchema(self, REQUEST=None):
     """
@@ -117,7 +112,7 @@ class JSONForm(JSONType, TextDocument):
       REQUEST
     )
 
-  security.declarePublic('getInputJSONSchema')
+  security.declarePublic("getInputJSONSchema")
   @UnrestrictedMethod
   def getInputJSONSchema(self, REQUEST=None):
     """