Skip to content

Instantly share code, notes, and snippets.

@mixxorz
Last active May 29, 2024 14:53
Show Gist options
  • Save mixxorz/dc36e180d1888629cf33 to your computer and use it in GitHub Desktop.
Save mixxorz/dc36e180d1888629cf33 to your computer and use it in GitHub Desktop.
Get requested fields from ResolveInfo. Graphene python.
"""
MIT License
Copyright (c) 2018 Mitchel Cabuloy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""
from graphql.core.utils.ast_to_dict import ast_to_dict
def collect_fields(node, fragments):
"""Recursively collects fields from the AST
Args:
node (dict): A node in the AST
fragments (dict): Fragment definitions
Returns:
A dict mapping each field found, along with their sub fields.
{'name': {},
'sentimentsPerLanguage': {'id': {},
'name': {},
'totalSentiments': {}},
'slug': {}}
"""
field = {}
if node.get('selection_set'):
for leaf in node['selection_set']['selections']:
if leaf['kind'] == 'Field':
field.update({
leaf['name']['value']: collect_fields(leaf, fragments)
})
elif leaf['kind'] == 'FragmentSpread':
field.update(collect_fields(fragments[leaf['name']['value']],
fragments))
return field
def get_fields(info):
"""A convenience function to call collect_fields with info
Args:
info (ResolveInfo)
Returns:
dict: Returned from collect_fields
"""
fragments = {}
node = ast_to_dict(info.field_asts[0])
for name, value in info.fragments.items():
fragments[name] = ast_to_dict(value)
return collect_fields(node, fragments)
@janbaykara
Copy link

Just a quick one: the import should read from graphql.utils.ast_to_dict import ast_to_dict, not from graphql.core.utils.ast_to_dict import ast_to_dict.

@janbaykara
Copy link

janbaykara commented Jun 4, 2018

Also, here's an additional clause to fetch inline fragments on union types ( ...on UserType { name }).

You might want to rename the field to "On...".

elif leaf['kind'] == 'InlineFragment':
    field.update({
        leaf['type_condition']['name']['value']: collect_fields(leaf, fragments)
    })

Copy link

ghost commented Apr 10, 2019

I just have to say thank you. I was having a few issues that were driving me off the wall and this solved it in 10 seconds. Thank you!

@prostosergik
Copy link

Does not works for me. info.fragments.items() is always empty.

@VISWESWARAN1998
Copy link

VISWESWARAN1998 commented Dec 5, 2019

First of all Thank you!

and ast_to_dict has been refactored to

from graphql.utils.ast_to_dict import ast_to_dict

I guess.

Thanks and Regards,
Visweswaran N

@ptrhck
Copy link

ptrhck commented Jul 13, 2021

It seems that it has been refactored again. Do you know where to find ast_to_dict?

@joanteixi
Copy link

Hi @ptrhck,

It seems that it has been refactored again. Do you know where to find ast_to_dict?

I'm still importing ast_to_dict from

from graphql.utils.ast_to_dict import ast_to_dict

@jnns
Copy link

jnns commented May 29, 2024

info.field_asts doesn't seem to be available anymore. But this works:

requested_fields = [
    node.name.value for node in info.field_nodes[0].selection_set.selections
]

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment