JSON Schema Draft v7 (http://json-schema.org/) formatting with marshmallow
Verified details
These details have been verified by PyPIProject links
GitHub Statistics
Maintainers
Project description
marshmallow-jsonschema-2: JSON Schema formatting with marshmallow
marshmallow-jsonschema translates marshmallow schemas into JSON Schema Draft v7 compliant jsonschema. See http://json-schema.org/
Forked from marshmallow-jsonschema
Why would I want my schema translated to JSON?
What are the use cases for this? Let's say you have a marshmallow schema in python, but you want to render your schema as a form in another system (for example: a web browser or mobile device).
Installation
Requires python>=3.9 and marshmallow>=3.11.
pip install marshmallow-jsonschema-2
The import name remains marshmallow_jsonschema for drop-in compatibility with the original package:
from marshmallow_jsonschema import JSONSchema
Some Client tools can render forms using JSON Schema
- react-jsonschema-form (recommended)
- See below extension for this excellent library!
- https://github.com/brutusin/json-forms
- https://github.com/jdorn/json-editor
- https://github.com/ulion/jsonform
Examples
Simple Example
from marshmallow import Schema, fields
from marshmallow_jsonschema import JSONSchema
class UserSchema(Schema):
username = fields.String()
age = fields.Integer()
birthday = fields.Date()
user_schema = UserSchema()
json_schema = JSONSchema()
json_schema.dump(user_schema)
Yields:
{'properties': {'age': {'format': 'integer',
'title': 'age',
'type': 'number'},
'birthday': {'format': 'date',
'title': 'birthday',
'type': 'string'},
'username': {'title': 'username', 'type': 'string'}},
'required': [],
'type': 'object'}
Nested Example
from marshmallow import Schema, fields
from marshmallow_jsonschema import JSONSchema
from tests import UserSchema
class Athlete(object):
user_schema = UserSchema()
def __init__(self):
self.name = 'sam'
class AthleteSchema(Schema):
user_schema = fields.Nested(JSONSchema)
name = fields.String()
athlete = Athlete()
athlete_schema = AthleteSchema()
athlete_schema.dump(athlete)
Complete example Flask application using brutisin/json-forms
This example renders a form not dissimilar to how wtforms might render a form.
However rather than rendering the form in python, the JSON Schema is rendered using the javascript library brutusin/json-forms.
from flask import Flask, jsonify
from marshmallow import Schema, fields
from marshmallow_jsonschema import JSONSchema
app = Flask(__name__)
class UserSchema(Schema):
name = fields.String()
address = fields.String()
@app.route('/schema')
def schema():
schema = UserSchema()
return jsonify(JSONSchema().dump(schema))
@app.route('/')
def home():
return '''<!DOCTYPE html>
<head>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/brutusin.json-forms/1.3.0/css/brutusin-json-forms.css"><Paste>
<script src="https://code.jquery.com/jquery-1.12.1.min.js" integrity="sha256-I1nTg78tSrZev3kjvfdM5A5Ak/blglGzlaZANLPDl3I=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.string/3.3.4/underscore.string.min.js"></script>
<script src="https://cdn.jsdelivr.net/brutusin.json-forms/1.3.0/js/brutusin-json-forms.min.js"></script>
<script>
$(document).ready(function() {
$.ajax({
url: '/schema'
, success: function(data) {
var container = document.getElementById('myform');
var BrutusinForms = brutusin["json-forms"];
var bf = BrutusinForms.create(data);
bf.render(container);
}
});
});
</script>
</head>
<body>
<div id="myform"></div>
</body>
</html>
'''
if __name__ == '__main__':
app.run(host='0.0.0.0', debug=True)
Advanced usage
Custom Type support
Simply add a _jsonschema_type_mapping method to your field
so we know how it ought to get serialized to JSON Schema.
A common use case for this is creating a dropdown menu using enum (see Gender below).
class Colour(fields.Field):
def _jsonschema_type_mapping(self):
return {
'type': 'string',
}
def _serialize(self, value, attr, obj):
r, g, b = value
r = "%02X" % (r,)
g = "%02X" % (g,)
b = "%02X" % (b,)
return '#' + r + g + b
class Gender(fields.String):
def _jsonschema_type_mapping(self):
return {
'type': 'string',
'enum': ['Male', 'Female']
}
class UserSchema(Schema):
name = fields.String(required=True)
favourite_colour = Colour()
gender = Gender()
schema = UserSchema()
json_schema = JSONSchema()
json_schema.dump(schema)
React-JSONSchema-Form Extension
react-jsonschema-form
is a library for rendering jsonschemas as a form using React. It is very powerful
and full featured.. the catch is that it requires a proprietary
uiSchema
to provide advanced control how the form is rendered.
Here's a live playground
(new in version 0.10.0)
from marshmallow_jsonschema.extensions import ReactJsonSchemaFormJSONSchema
class MySchema(Schema):
first_name = fields.String(
metadata={
'ui:autofocus': True,
}
)
last_name = fields.String()
class Meta:
react_uischema_extra = {
'ui:order': [
'first_name',
'last_name',
]
}
json_schema_obj = ReactJsonSchemaFormJSONSchema()
schema = MySchema()
# here's your jsonschema
data = json_schema_obj.dump(schema)
# ..and here's your uiSchema!
ui_schema_json = json_schema_obj.dump_uischema(schema)
Project details
Verified details
These details have been verified by PyPIProject links
GitHub Statistics
Maintainers
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
Built Distribution
Filter files by name, interpreter, ABI, and platform.
If you're not sure about the file name format, learn more about wheel file names.
Copy a direct link to the current filters
File details
Details for the file marshmallow_jsonschema_2-0.1.0.tar.gz.
File metadata
- Download URL: marshmallow_jsonschema_2-0.1.0.tar.gz
- Upload date:
- Size: 18.4 kB
- Tags: Source
- Uploaded using Trusted Publishing? Yes
- Uploaded via: twine/6.1.0 CPython/3.13.7
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 |
2905e560fbbecbb2deed36a5daf6ff66de2e428375cc4a8104a442fc3bfda3c3
|
|
| MD5 |
6bafe4e7b5ea6e38183b9fbd2b73a94f
|
|
| BLAKE2b-256 |
409029bc200f8caf1c890c5424c051ef760830886f1ca76e5161c65f418712f5
|
Provenance
The following attestation bundles were made for marshmallow_jsonschema_2-0.1.0.tar.gz:
Publisher:
publish.yml on JacobChesslo/marshmallow-jsonschema-2
-
Statement:
-
Statement type:
https://in-toto.io/Statement/v1 -
Predicate type:
https://docs.pypi.org/attestations/publish/v1 -
Subject name:
marshmallow_jsonschema_2-0.1.0.tar.gz -
Subject digest:
2905e560fbbecbb2deed36a5daf6ff66de2e428375cc4a8104a442fc3bfda3c3 - Sigstore transparency entry: 939827578
- Sigstore integration time:
-
Permalink:
JacobChesslo/marshmallow-jsonschema-2@94a7b944db7dd9b97ae1e605353d6d710e87ac4c -
Branch / Tag:
refs/tags/v0.1.0 - Owner: https://github.com/JacobChesslo
-
Access:
public
-
Token Issuer:
https://token.actions.githubusercontent.com -
Runner Environment:
github-hosted -
Publication workflow:
publish.yml@94a7b944db7dd9b97ae1e605353d6d710e87ac4c -
Trigger Event:
release
-
Statement type:
File details
Details for the file marshmallow_jsonschema_2-0.1.0-py3-none-any.whl.
File metadata
- Download URL: marshmallow_jsonschema_2-0.1.0-py3-none-any.whl
- Upload date:
- Size: 12.8 kB
- Tags: Python 3
- Uploaded using Trusted Publishing? Yes
- Uploaded via: twine/6.1.0 CPython/3.13.7
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 |
b1b16b68e478f52b1b373c81927559a000b355ed68a866748a2266fb4933cddf
|
|
| MD5 |
2ca5f90e55a9a20b26abe491c8f7521d
|
|
| BLAKE2b-256 |
697106ebdb422fea80ae5dedc0896b9e59ccc16c9e9c55cab1cea0115adc3f96
|
Provenance
The following attestation bundles were made for marshmallow_jsonschema_2-0.1.0-py3-none-any.whl:
Publisher:
publish.yml on JacobChesslo/marshmallow-jsonschema-2
-
Statement:
-
Statement type:
https://in-toto.io/Statement/v1 -
Predicate type:
https://docs.pypi.org/attestations/publish/v1 -
Subject name:
marshmallow_jsonschema_2-0.1.0-py3-none-any.whl -
Subject digest:
b1b16b68e478f52b1b373c81927559a000b355ed68a866748a2266fb4933cddf - Sigstore transparency entry: 939827600
- Sigstore integration time:
-
Permalink:
JacobChesslo/marshmallow-jsonschema-2@94a7b944db7dd9b97ae1e605353d6d710e87ac4c -
Branch / Tag:
refs/tags/v0.1.0 - Owner: https://github.com/JacobChesslo
-
Access:
public
-
Token Issuer:
https://token.actions.githubusercontent.com -
Runner Environment:
github-hosted -
Publication workflow:
publish.yml@94a7b944db7dd9b97ae1e605353d6d710e87ac4c -
Trigger Event:
release
-
Statement type:
