There are errors occurring in the getter I created within the vuex store.js file

Currently utilizing vuejs, vuex, and vuetify. Within this project there are 3 files in play and I will share the key sections here.

The main objective is to showcase data associated with the route parameter. Despite my attempts in Product.vue as shown below:

<h1 class="heading primary--text"> {{ product.partNumber }}</h1>

No content from that file seems to load, leading to error messages in the console such as...

Chrome: "TypeError: Cannot read property 'find' of undefined"

Firefox: [Vue warn]: Error in render: "TypeError: state.loadedProducts is undefined"

In a different section of this project, I created a vue page which successfully loads all products using v-for and a getter without any issues.

I am currently perplexed about what could be going wrong, seeking assistance before I lose more hair over this issue.

store.js

   getters:{
    loadedProducts (state) {
      return state.products.sort((productA, productB) => {
        return productA.partNumber > productB.partNumber
      })
    },
    loadedProduct (state) {
      return (productId) => {
        return state.loadedProducts.find((product) => {
          return product.partNumber === productId
        })
      }
    }
  }

router.js

 {
  path: '/product/:id',
  name: 'Product',
  props: true,
  component: Product
  }

Product.vue

<script>
export default {
  name: 'Product',
  props: ['id'],
  computed: {
    product () {
      return this.$store.getters.loadedProduct(this.id)
    }
  }
}
</script>

Answer №1

Instead of trying to access the loadedProducts directly from the store, it's better to access them through the getters themselves. The documentation on getters provides an example of how to do this by using the second argument.

Getters can also receive other getters as the second argument

loadedProduct (state, getters) {
  return (productId) => {
    return getters.loadedProducts.find((product) => {
      return product.partNumber === productId
    })
  }
}

Make sure you are setting sensible defaults for your store properties, like an empty array for products.

I hope that explanation helps!

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