Using the value from the Vuex state to set the initial value for a different parameter

Question

Using the value from the Vuex state to set the initial value for a different parameter

I am facing an issue with utilizing an array of objects in my Vuex state to set a default value for another parameter, specifically for mainAccount:

For instance:

const store = new Vuex.Store({
  state: {
    AccountNums: [
      {
        label: 'Mister1',
        value: '1234567890'
      },
      {
        label: 'Mister2',
        value: '9876543210'
      }
    ],
   mainAccount: this.state.AccountNums[1].value   //attempting to use the value from the object here
}

However, I keep encountering an error message that says:

Cannot read property 'state' of undefined

When I eliminate the this keyword, a different error appears:

'state' is not defined

How should I go about resolving this? It's important to note that the AccountNums object needs to stay inside my Vuex state because it will be accessed by many components.

Thank you!

javascript vue.js vuex

Answer 1

Answer №1

In order to avoid referencing an undefined store, you can work around this issue by declaring your accountNums object outside initially. Then, you can simply refer to it as shown below:

const accountNums = [
      {
        label: 'Mister1',
        value: '1234567890'
      },
      {
        label: 'Mister2',
        value: '9876543210'
      }
    ];
const store = new Vuex.Store({
  state: {
    AccountNums: accountNums,
   mainAccount: accountNums[1].value   
}

Answer 2

In order to avoid referencing an undefined store, you can work around this issue by declaring your accountNums object outside initially. Then, you can simply refer to it as shown below:

const accountNums = [
      {
        label: 'Mister1',
        value: '1234567890'
      },
      {
        label: 'Mister2',
        value: '9876543210'
      }
    ];
const store = new Vuex.Store({
  state: {
    AccountNums: accountNums,
   mainAccount: accountNums[1].value   
}

Answer 3

Answer №2

A common issue that arises not only in Vuex but also when defining JavaScript objects is the inability to reference other properties within the object itself. This results in error messages as the object is being referenced inside its own definition.

To resolve this, a simple solution exists. Create and define the AccountNums array separately, then proceed to refer to it within your store object. For example:

const AccountNums = [
  {
    label: 'John Doe',
    value: '1234567890'
  },
  {
    label: 'Jane Smith',
    value: '9876543210'
  }
]

const store = new Vuex.Store({
  state: {
    AccountNums,
    mainAccount: AccountNums[1].value   //refers back to the previously declared const
}

Answer 4

A common issue that arises not only in Vuex but also when defining JavaScript objects is the inability to reference other properties within the object itself. This results in error messages as the object is being referenced inside its own definition.

To resolve this, a simple solution exists. Create and define the AccountNums array separately, then proceed to refer to it within your store object. For example:

const AccountNums = [
  {
    label: 'John Doe',
    value: '1234567890'
  },
  {
    label: 'Jane Smith',
    value: '9876543210'
  }
]

const store = new Vuex.Store({
  state: {
    AccountNums,
    mainAccount: AccountNums[1].value   //refers back to the previously declared const
}

Using the value from the Vuex state to set the initial value for a different parameter

Answer №1

Answer №2

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