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javascriptreduxreselect

Redux Selector - concatenate values of an object

The selector is as follows:

export const findCustomer = createSelector(
  state => state.customers.active,
  users => users.find(user => user.my_property === true)
);

It'll return one object:

{
  "first_name": "John",
  "last_name": "Doe",
  "post_code": "zzzzz",
  "category" : "abc",
}

What I'm trying to return from this selector in one go is just concatenated 2 values (both are always strings), eg postcode + category

the end output should be a string: 'zzzzzabc'

I know how to do it after I extract the object in a component, but I'd like to do it in the selector itself. Is it possible?

Solution

  • I think you should be able to something like this:

    export const findCustomer = createSelector(
   state => state.customers.active,
   users => { 
    const { post_code, category } = users.find(user => user.my_property === true)
    return post_code + category
   });