Understanding the implementation of public and private methods in mixins in Vue2

While I've come across documentation on the following implementation, I find myself struggling to visualize how it can be executed.

// A more advanced alternative!
var myGreatMixin = {
  // ...
  methods: {
    publicMethod() {
      // ...
      myPrivateFunction()
    }
  }
}

function myPrivateFunction() {
  // ...
}

export default myGreatMixin

The dilemma lies in managing multiple mixins within a component and determining the best practices/conventions to follow.

I grasp how this method could potentially resolve the aforementioned issue.

var myGreatMixin = {
  // ...
  methods: {
    $_myGreatMixin_update: function () {
      // ...
    }
  }
}

However, I'm still perplexed about implementing the even better approach within a component.

Here's a speculative solution - unsure if it's viable?


// myMixin
const method1 = () => console.log('method1 firing')

export default {
  methods: {
    $_myMixin() {
      return {
        method1 
      }
    }
  }
}


// component
mixins: [myMixin],

data: () => ({
  myMixinMethods: {}
}),
created() {
  this.myMixinMethods = this.$_myMixin()
},
mounted() {
  this.myMixinMethods.method1()
}

This approach feels overly complex, prompting me to seek out additional insights. I stumbled upon an even better technique involving public/private methods, but its implementation remains unclear to me, particularly in addressing namespace conflicts with multiple mixins in a Vue component.

Answer №1

When working with Vue 2, there isn't a designated way to create "private" methods within components or mixins. However, you can achieve similar functionality by defining functions outside of the component or mixin object, as demonstrated in your provided example. By doing this, these functions are not accessible from other components or mixins, essentially keeping them "private".

An alternative method that you mentioned is to define a private function outside of the mixin object. This particular function is limited to only being accessed within the same file or module and remains hidden when the mixin is imported into a component. Here is an illustration of how this approach can be implemented:

To accomplish this, define the mixin as shown below:

function privateMethod() {
  console.log('Private method triggered');
}

export default {
  methods: {
    publicMethod() {
      console.log('Public method triggered');
      privateMethod();
    }
  }
}

Then, in the component file:

import myMixin from './myMixin';

export default {
  mixins: [myMixin],
  mounted() {
    this.publicMethod(); // Both the public and private methods will be invoked
  }
}

By adopting this pattern, you can emulate the behavior described above.

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