View Source Grumble

A DSL for generating GraphQL queries

Status: beta

We use this in our tests at work to generate all the queries (because we outgrew string concatenation). I'm not sure I'd want to depend on it in production yet because it's hard to feel like it's had a proper stress testing.

  • Needs (better) tests and documentation.
  • Missing support for some things we don't use.


Add to your deps:

{:grumble, "~> 0.1.0"}

Simple example:

import Grumble
alias Grumble.PP

    params: [community_id: type!(:string)],
    fields: [
        args: [community_id: var(:community_id)],
        fields: [:id, :name]


query($communityId: String!) {
  community(communityId: $communityId) {


Most of the useful functions are in the Grumble module. From there you can read which arguments are understood by the relevant new function. We apologise for the poor documentation, please feel free to contribute better docs!


Contributions are welcome, even just doc fixes or suggestions.

This project has adopted a Code of Conduct based on the Contributor Covenant. Please be nice when interacting with the community.

Copyright (c) 2020 Grumble contributors.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.