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GraphQL - Mutations

What is the difference between Queries and Mutations in code?

The big difference is that next to a query property, you have to send a variable property with the request. See the official GraphQL documentation for more information: https://graphql.org/learn/queries/#mutations

 

How to update data in epowerhr specifically?

We'll use the 'baseSavePerson'-mutation as an example:

A mutation always has two properties:

1. An object specific to the type of object you want to update (in this example 'person')

  • This object will always have an 'id'-property. If you know the id directly, you can always fill in this property and ignore the 'reference'-object.
  • Only fill in the properties on the object you want to be updated. Properties not filled in will be ignored and will stay the same in the database.

2. A 'referenceType'-object (in this example 'reference')

  • This is an optional object. This property will only be used if the id on the specific object is not filled in.
  • This object is used to find the first object relatively with another property, like an external-id or a reference-id.
  • To know which property to use on this reference-object, you'll have to get in contact with epowerhr, because this is specific to the setup of the client in epowerhr.