Tips on sending arguments to functions associated with ...mapActions...()?

Question

Tips on sending arguments to functions associated with ...mapActions...()?

After analyzing the passage below

export default {
  methods: {
    ...mapActions(["updateData", "resetData"]);
  }
}

I wanted to include a parameter in the called functions. Unsure of the proper way to do this while still using the ...mapAction() call, I ended up modifying it to the following.

export default {
  methods: {
    // ...mapActions(["updateData", "resetData"])
    updateData: function() { this.$store.dispatch("updateData", "names") },
    resetData: function() { this.$store.dispatch("resetData"); }
  }
}

Is this the only solution?

javascript ecmascript-6 vue.js

Answer 1

Answer №1

To pass a parameter to a method, simply include it when calling the method. Only one parameter can be sent, which will then be accessible in the actions. No special actions are required when using mapActions.

For instance, you can call the method like this:

<button @click=updateData({data1: 1, data2: 2})>

And in the Vuex store:

const actions = {
  updateData: (state, data) => {
     //The passed parameter 'data' will be available here
  },

And you can still utilize mapActions:

export default {
  methods: {
    ...mapActions(["updateData", "resetData"]);
  }
}

Check out the working fiddle here: you can see the passed parameter in the alert :)

Below is the code implementation of mapActions from the Vuex repository:

export function mapActions (actions) {
  const res = {}
  normalizeMap(actions).forEach(({ key, val }) => {
    res[key] = function mappedAction (...args) {
      return this.$store.dispatch.apply(this.$store, [val].concat(args))
    }
  })
  return res
}

It takes the passed args and includes them as a second argument of the dispatch function.

Answer 2

To pass a parameter to a method, simply include it when calling the method. Only one parameter can be sent, which will then be accessible in the actions. No special actions are required when using mapActions.

For instance, you can call the method like this:

<button @click=updateData({data1: 1, data2: 2})>

And in the Vuex store:

const actions = {
  updateData: (state, data) => {
     //The passed parameter 'data' will be available here
  },

And you can still utilize mapActions:

export default {
  methods: {
    ...mapActions(["updateData", "resetData"]);
  }
}

Check out the working fiddle here: you can see the passed parameter in the alert :)

Below is the code implementation of mapActions from the Vuex repository:

export function mapActions (actions) {
  const res = {}
  normalizeMap(actions).forEach(({ key, val }) => {
    res[key] = function mappedAction (...args) {
      return this.$store.dispatch.apply(this.$store, [val].concat(args))
    }
  })
  return res
}

It takes the passed args and includes them as a second argument of the dispatch function.

Tips on sending arguments to functions associated with ...mapActions...()?

Answer №1

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