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import marshmallow as ma
from bottle import Bottle, HTTPResponse, debug, request, response
from webargs import fields, validate
from webargs.bottleparser import parser, use_args, use_kwargs
from webargs.core import json
hello_args = {"name": fields.Str(load_default="World", validate=validate.Length(min=3))}
hello_multiple = {"name": fields.List(fields.Str())}
class HelloSchema(ma.Schema):
name = fields.Str(load_default="World", validate=validate.Length(min=3))
hello_many_schema = HelloSchema(many=True)
# variant which ignores unknown fields
hello_exclude_schema = HelloSchema(unknown=ma.EXCLUDE)
app = Bottle()
debug(True)
@app.route("/echo", method=["GET"])
def echo():
return parser.parse(hello_args, request, location="query")
@app.route("/echo_form", method=["POST"])
def echo_form():
return parser.parse(hello_args, location="form")
@app.route("/echo_json", method=["POST"])
def echo_json():
return parser.parse(hello_args, location="json")
@app.route("/echo_json_or_form", method=["POST"])
def echo_json_or_form():
return parser.parse(hello_args, location="json_or_form")
@app.route("/echo_use_args", method=["GET"])
@use_args(hello_args, location="query")
def echo_use_args(args):
return args
@app.route(
"/echo_use_args_validated",
method=["POST"],
apply=use_args(
{"value": fields.Int()},
validate=lambda args: args["value"] > 42,
location="form",
),
)
def echo_use_args_validated(args):
return args
@app.route("/echo_ignoring_extra_data", method=["POST"])
def echo_json_ignore_extra_data():
return parser.parse(hello_exclude_schema, unknown=None)
@app.route(
"/echo_use_kwargs", method=["GET"], apply=use_kwargs(hello_args, location="query")
)
def echo_use_kwargs(name):
return {"name": name}
@app.route("/echo_multi", method=["GET"])
def echo_multi():
return parser.parse(hello_multiple, request, location="query")
@app.route("/echo_multi_form", method=["POST"])
def multi_form():
return parser.parse(hello_multiple, location="form")
@app.route("/echo_multi_json", method=["POST"])
def multi_json():
return parser.parse(hello_multiple)
@app.route("/echo_many_schema", method=["POST"])
def echo_many_schema():
arguments = parser.parse(hello_many_schema, request)
return HTTPResponse(body=json.dumps(arguments), content_type="application/json")
@app.route(
"/echo_use_args_with_path_param/<name>",
apply=use_args({"value": fields.Int()}, location="query"),
)
def echo_use_args_with_path_param(args, name):
return args
@app.route(
"/echo_use_kwargs_with_path_param/<name>",
apply=use_kwargs({"value": fields.Int()}, location="query"),
)
def echo_use_kwargs_with_path_param(name, value):
return {"value": value}
@app.route("/error", method=["GET", "POST"])
def always_error():
def always_fail(value):
raise ma.ValidationError("something went wrong")
args = {"text": fields.Str(validate=always_fail)}
return parser.parse(args)
@app.route("/echo_headers")
def echo_headers():
return parser.parse(hello_args, request, location="headers")
@app.route("/echo_cookie")
def echo_cookie():
return parser.parse(hello_args, request, location="cookies")
@app.route("/echo_file", method=["POST"])
def echo_file():
args = {"myfile": fields.Raw()}
result = parser.parse(args, location="files")
myfile = result["myfile"]
content = myfile.file.read().decode("utf8")
return {"myfile": content}
@app.route("/echo_nested", method=["POST"])
def echo_nested():
args = {"name": fields.Nested({"first": fields.Str(), "last": fields.Str()})}
return parser.parse(args)
@app.route("/echo_nested_many", method=["POST"])
def echo_nested_many():
args = {
"users": fields.Nested({"id": fields.Int(), "name": fields.Str()}, many=True)
}
return parser.parse(args)
@app.error(400)
@app.error(422)
def handle_error(err):
response.content_type = "application/json"
return err.body
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