How do you introspect the schema?

[ashinohara]

I see that the graphiql interface is able to introspect the schema, but I am not sure how you would export the schema form python. I see the introspect function on the Schema object, but that simply returns the objects from the type_map.

[syrusakbary]

@ashinohara I've fixed the introspection method in the schema.
Just update your graphene package to 0.1.3 version and run schema.introspect() in your graphene.Schema:

import json

schema = graphene.Schema(....)

introspection_dict = schema.introspect()

# Print the schema in the console
print json.dump(introspection_dict)

# Or save the schema into some file
open('schema.json', ‘w’) as fp:
    json.dump(introspection_dict, fp)

[syrusakbary]

Thanks @jhgg for showing me the way 😉

[jhgg]

No problem!

[yakneens]

This should be automatically exposed by Graphene as a query that returns the file.

[isakal]

If you want to get schema in GraphQL SDL format:

>>> from your_project.schema_definition import schema
>>>  print(schema)
schema {
  query: Query
  mutation: Mutation
}

type CreateUser {
  user: User
  message: String
  success: Boolean
}
# and so on ...

[Curiouspaul1]

If you want to get schema in GraphQL SDL format:

>>> from your_project.schema_definition import schema
>>>  print(schema)
schema {
  query: Query
  mutation: Mutation
}

type CreateUser {
  user: User
  message: String
  success: Boolean
}
# and so on ...

How does one save this to a file like schema.graphql or .gql

[5chulzi]

If you want to get schema in GraphQL SDL format:

>>> from your_project.schema_definition import schema
>>>  print(schema)
schema {
  query: Query
  mutation: Mutation
}

type CreateUser {
  user: User
  message: String
  success: Boolean
}
# and so on ...

How does one save this to a file like schema.graphql or .gql

Here you go:

with open('schema.graphql', 'w') as f:
    f.write(str(schema))

This works, because the schema class uses the def __str__(self) method to return the string representation of the underlying graphql schema.

[guiklimek]

Using the command: https://docs.graphene-python.org/projects/django/en/latest/introspection/

./manage.py graphql_schema --schema tutorial.quickstart.schema --out schema.graphql

[krish7919]

(Sorry to comment on a closed issue but this seems to be the right place)

Is there a way for graphene to query Postgres directly and generate an SDL file ?