#Management SDK step by step example

This document is a step by step of the example presented here.

This whole example is run at once, but here we will show you how to write it step by step.

The first thing you need to do is enable API access.

import {
  Client,
  RelationalFieldType,
  SimpleFieldType,
  VisibilityTypes,
} from '@hygraph/management-sdk';

const client = new Client({
  authToken: '',
  endpoint: '',
});

You will complete the authToken and endpoint using your project's data. Read this document for further details.

Then, create the models:

client.createModel({
  apiId: 'Page',
  apiIdPlural: 'Pages',
  displayName: 'Page',
});

client.createModel({
  apiId: 'Author',
  apiIdPlural: 'Authors',
  displayName: 'Author',
});

client.createModel({
  apiId: 'Book',
  apiIdPlural: 'Books',
  displayName: 'Book',
});

Then, add simple fields. Here, we are adding a title, a simple field of type string, a slug field, a hidden integer field with custom field validation, a required & unique string field with custom regex validation for emails, a basic rich text field, a rich text with embeds and single allowed embeddable model, and a list of date/times:

// required title field of type string:
client.createSimpleField({
  parentApiId: 'Page',
  type: SimpleFieldType.String,
  apiId: 'title',
  displayName: 'Title',
  isTitle: true,
  isRequired: true,
  visibility: VisibilityTypes.ReadWrite,
});

// simple field of type string:
client.createSimpleField({
  parentApiId: 'Author',
  type: SimpleFieldType.String,
  apiId: 'favouritePastime',
  displayName: 'Author Favourite Pastime',
  isRequired: true,
  visibility: VisibilityTypes.ReadWrite,
});

// slug field:
client.createSimpleField({
  parentApiId: 'Page',
  type: SimpleFieldType.String,
  apiId: 'slug',
  displayName: 'Slug',
  description: 'Enter the slug for this page, such as about, blog, or contact',
  isRequired: true,
  isUnique: true,
  tableRenderer: 'GCMS_SLUG',
  formRenderer: 'GCMS_SLUG',
});

// hidden integer field with custom field validation:
client.createSimpleField({
  parentApiId: 'Page',
  type: SimpleFieldType.Int,
  apiId: 'count',
  displayName: 'Count',
  visibility: VisibilityTypes.Hidden,
  validations: {
    Int: {
      range: {
        max: 1000,
        min: 0,
        errorMessage: 'Counter has to be between 0 and 1000',
      },
    },
  },
});

// required + unique string field with custom regex validation for emails:
client.createSimpleField({
  parentApiId: 'Page',
  type: SimpleFieldType.String,
  apiId: 'email',
  displayName: 'Email',
  isRequired: true,
  isUnique: true,
  validations: {
    String: {
      matches: {
        regex: '^([a-z0-9_\\.\\+-]+)@([\\da-z\\.-]+)\\.([a-z\\.]{2,6})$',
      },
    },
  },
});

// basic richtext field
client.createSimpleField({
  parentApiId: 'Page',
  type: SimpleFieldType.Richtext,
  apiId: 'content',
  displayName: 'Content',
  description:
    'Enter the content for this page. The content uses the rich-text editor, giving you a better visual representation.',
  isRequired: true,
});

// richtext with embeds and single allowed embeddable model:
client.createSimpleField({
  parentApiId: 'Page',
  type: SimpleFieldType.Richtext,
  apiId: 'contentExtended',
  displayName: 'Content Extended',
  embedsEnabled: true,
  embeddableModels: ['Author'],
});

// list of date times
client.createSimpleField({
  parentApiId: 'Page',
  type: SimpleFieldType.Datetime,
  apiId: 'lastSeen',
  displayName: 'Last Seen',
  isRequired: true,
  isList: true,
});

Add relational fields. Here, we are adding a uni-directional asset field, regular bi-directional m-1 relation, and a m-n relation:

// required uni-directional asset field
client.createRelationalField({
  parentApiId: 'Page',
  apiId: 'preview',
  displayName: 'Preview',
  type: RelationalFieldType.Asset,
  isRequired: true,
  reverseField: {
    isUnidirectional: true,
    apiId: 'page',
    displayName: 'Page',
    modelApiId: 'Asset',
  },
});

// regular bi-directional m-1 relation
client.createRelationalField({
  parentApiId: 'Page',
  apiId: 'writtenBy',
  displayName: 'Written By',
  type: RelationalFieldType.Relation,
  reverseField: {
    modelApiId: 'Author',
    apiId: 'pages',
    displayName: 'pages',
    isList: true,
  },
});

// m-n relation
client.createRelationalField({
  parentApiId: 'Author',
  apiId: 'favouriteBooks',
  displayName: 'Favourite Books',
  type: RelationalFieldType.Relation,
  isList: true,
  reverseField: {
    modelApiId: 'Page',
    apiId: 'favouriteOf',
    displayName: 'Favourite of',
    isList: true,
  },
});

Add a union field:

client.createUnionField({
  parentApiId: 'Author',
  apiId: 'favourites',
  displayName: 'Author Favourite Books',
  reverseField: {
    apiId: 'authorFavouriteBook',
    displayName: 'author favourite book',
    modelApiIds: ['Book'],
  },
});

Then add a union member to the previous union field:

client.updateUnionField({
  parentApiId: 'Author',
  apiId: 'favourites',
  displayName: 'Favourite Pastime',
  reverseField: {
    modelApiIds: ['Book', 'Movie'],
  },
});

Add the components:

client.createComponent({
  apiId: 'Address',
  apiIdPlural: 'Adresses',
  displayName: 'Address',
});

client.createComponent({
  apiId: 'Contributor',
  apiIdPlural: 'Contributors',
  displayName: 'Contributor',
});

client.createComponent({
  apiId: 'VideoBlock',
  apiIdPlural: 'VideoBlocks',
  displayName: 'VideoBlock',
});

Add a field to the components:

client.createSimpleField({
  parentApiId: 'Address',
  type: SimpleFieldType.String,
  apiId: 'city',
  displayName: 'City',
});

Add a basic component field:

client.createComponentField({
  parentApiId: 'Author',
  apiId: 'address',
  displayName: 'Address',
  description: 'Address of the author',
  componentApiId: 'Address',
});

Add a component union field:

client.createComponentUnionField({
  parentApiId: 'Page',
  apiId: 'section',
  displayName: 'Section',
  componentApiIds: ['Contributor', 'VideoBlock'],
});

And finally, remove VideoBlock from the component union field:

client.updateComponentUnionField({
  parentApiId: 'Page',
  apiId: 'section',
  displayName: 'Section',
  componentApiIds: ['Contributor'],
});