[python-flask] Default Petshop example doesn't run the swagger-ui

[jethrogillgren]

Description

Running the default PetShop OpenAPI 3 example doesn't show the UI as suggested in the README.md

The logs show an error with connexion[swagger-ui]:

The swagger_ui directory could not be found.
    Please install connexion with extra install: pip install connexion[swagger-ui]
    or provide the path to your local installation by passing swagger_path=<your path>

Adding this dependency (connexion[swagger-ui] ~= 2.6.0) does not appear to change anything.

Swagger-codegen version

3.0.22

Swagger declaration file content or url

https://raw.githubusercontent.com/OAI/OpenAPI-Specification/master/examples/v3.0/petstore.yaml

Command line used for generation

docker run --rm -v ${PWD}:/local swaggerapi/swagger-codegen-cli-v3:3.0.22  generate -i https://raw.githubusercontent.com/OAI/OpenAPI-Specification/master/examples/v3.0/petstore.yaml -l python-flask -o /local

Steps to reproduce

1. Run the generation command above
2. Edit the requirements.txt to workaround existing bug Connexion version incorrect in requirements.txt swagger-codegen-generators#780, and add in connexion[swagger-ui] ~= 2.6.0 (also tried with 2.7.0 and 2.5.1)
3. docker build -t testcase .
4. docker run -p 8080:8080 testcase
5. Open the URL given in the generted README.md: http://localhost:8080/v1/ui/

Thanks!

[jethrogillgren]

Note that updating main.py to:

app = connexion.App(__name__, specification_dir='./swagger/', options={"swagger_ui": True, "serve_spec": True})

doesn't seem to help.

[parisni]

Add same issue on source generated no https://editor.swagger.io/#
added connexion[swagger-ui] >= 2.7.0 and also
app = connexion.App(__name__, specification_dir='./swagger/', options={"swagger_ui": True, "serve_spec": True})
have made the localhost:8080/v2/ui workign

[bluebrown]

Seems like this is completely broken. I get errors all over. And the connexion version that is in requirements is pretty old too.