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ngrx-entity-relationship helps to:

• select relational data from Redux or NGRX stores
• maintain store with normalized entities
• quickly build queries for GraphQL

Important links

• Documentation with examples
• GitHub repo
• NPM package

• Live Redux example on StackBlitz
• Live Redux example on CodeSandbox
• Live NGRX example on StackBlitz
• Live NGRX example on CodeSandbox

• chat on gitter
• ask a question on stackoverflow for Redux solution
• ask a question on stackoverflow for NGRX solution
• report an issue on GitHub

The best way is to read documentation, but there is an example below for a quick introduction.

If we want to select a user with its company and with the address of the company, in order that the final object would look like that:

const user = {
 id: '1',
 firstName: 'John',
 lastName: 'Smith',
 companyId: '1',
 company: {
 id: '1',
 name: 'Magic',
 adminId: '2',
 addressId: '1',
 address: {
 id: '1',
 street: 'Main st.',
 city: 'Town',
 country: 'Land',
 },
 },
};

We need to use a selector built by ngrx-entity-relationship for Redux or NGRX like that:

const selectUser = rootUser(
 relUserCompany(
 relCompanyAddress(),
 ),
);

Profit.

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Thank you!