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Strapi Flatten GraphQL

Helper to flatten nested strapi v4 graphql structure including typings. I use this in my project where I also use graphql-codegen to generate typings and services from schema but it should also work with the code first approach. Currently to make use of it the graphql query needs to always request entity id on any level.

I'll be happy to accept any PRs that will make this more useful and generic.

A utility library to flatten nested GraphQL responses from Strapi into simpler structures.

Installation

npm install strapi-flatten-graphql

Usage

This library provides functions to flatten nested GraphQL responses from Strapi. Here's how to use them:

flattenEntity(entity: StrapiEntity): FlattenEntity<StrapiEntity>

This function takes a Strapi entity and returns a flattened version of it. The entity should have an id and attributes field. The attributes field can be an object containing nested fields.

Example:

import { flattenEntity } from 'strapi-flatten-graphql';

const entity = {
  id: '1',
  attributes: {
    name: 'John',
    age: 30,
    address: {
      city: 'New York',
      country: 'USA',
    },
  },
};

const flattenedEntity = flattenEntity(entity);

console.log(flattenedEntity);
/*
{
  id: '1',
  name: 'John',
  age: 30,
  address: {
    city: 'New York',
    country: 'USA',
  },
}
*/

flattenEntityResponse(response: StrapiEntityResponse): Flatten<StrapiEntityResponse>

This function takes a Strapi entity response and returns a flattened version of it. The response should have a data field containing the entity.

Example:

import { flattenEntityResponse } from 'strapi-flatten-graphql';

const response = {
  data: {
    id: '1',
    attributes: {
      name: 'John',
      age: 30,
      address: {
        city: 'New York',
        country: 'USA',
      },
    },
  },
};

const flattenedResponse = flattenEntityResponse(response);

console.log(flattenedResponse);
/*
{
  id: '1',
  name: 'John',
  age: 30,
  address: {
    city: 'New York',
    country: 'USA',
  },
}
*/

flattenEntityResponseCollection(response: StrapiEntityResponseCollection): FlattenArray<StrapiEntityResponseCollection>

This function takes a collection of Strapi entity responses and returns a flattened version of it. The response should have a data field containing an array of entities.

Example:

import { flattenEntityResponseCollection } from 'strapi-flatten-graphql';

const response = {
  data: [
    {
      id: '1',
      attributes: {
        name: 'John',
        age: 30,
        address: {
          city: 'New York',
          country: 'USA',
        },
      },
    },
    {
      id: '2',
      attributes: {
        name: 'Jane',
        age: 25,
        address: {
          city: 'San Francisco',
          country: 'USA',
        },
      },
    },
  ],
};

const flattenedResponse = flattenEntityResponseCollection(response);

console.log(flattenedResponse);
/*
[
  {
    id: '1',
    name: 'John',
    age: 30,
    address: {
      city: 'New York',
      country: 'USA',
    },
  },
  {
    id: '2',
    name: 'Jane',
    age: 25,
    address: {
      city: 'San Francisco',
      country: 'USA',
    },
  },
]
*/

API Reference

Types

  • StrapiEntity: Represents a Strapi entity with an id and attributes field.
  • StrapiEntityResponse<N>: Represents a Strapi entity response with a data field containing a single entity.
  • StrapiEntityResponseCollection<N>: Represents a collection of Strapi entity responses with a data field containing an array of entities.
  • FlattenStrapi<T>: Type utility to flatten nested GraphQL responses based on the input type T.
  • FlattenEntity<E extends StrapiEntity>: Type utility to flatten a single entity.
  • Flatten<T extends StrapiEntityResponse>: Type utility to flatten a single entity response.
  • FlattenArray<T extends StrapiEntityResponseCollection>: Type utility to flatten an entity response collection.
  • FlattenAttributes<T>: Type utility to flatten the attributes of an entity.

Functions

  • flattenEntity(entity: StrapiEntity): FlattenEntity<StrapiEntity>: Flattens a Strapi entity.
  • flattenEntityResponse(response: StrapiEntityResponse): Flatten<StrapiEntityResponse>: Flattens a Strapi entity response.
  • flattenEntityResponseCollection(response: StrapiEntityResponseCollection): FlattenArray<StrapiEntityResponseCollection>: Flattens a collection of Strapi entity responses.

License

This project is licensed under the MIT License.

Feel free to reach out if you have any questions or need further assistance!

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