State variables becoming undefined when calling vuex action - firebase

Question

Error Message:Error: Function DocumentReference.set() called with invalid data. Unsupported field value: undefined (found in field articleName)
I am trying to add the variables from my form to my Firebase Cloud Firestore database. I use vuex for global state management. When I pass the variables from my CreateSale component to sale->state they get defined. But when I call the action createSale when submitting the form, the state variables are undefined. Everything should be setup properly. I registered Vuex aswell as configured firebase.
sale.js (vuex module)
createSale(state, getters) {
console.log(state.articleName) //undefined
db.collection('clothes').add({
articleName: state.articleName,
description: state.description,
brand: state.brand,
price: state.price,
imagesRefs: getters.fileRefs
}).then(docRef => {
for (var i = 0; i < state.files.length; i++) {
}
this.$router.push('/')
}).catch(error => alert(error.message))
}
CreateSale.vue
template:
<div class="container" id="createSale">
<form #submit.prevent="createSale" class="col s12">
<div class="row">
<div class="input-field col s12">
<input type="text" v-model="articleName" v-on:change="setArticleName(articleName)" required>
<label>Article Name</label>
</div>
</div>
<div class="row">
<div class="input-field col s12">
<input type="text" v-model="description" v-on:change="setDescription(description)" required>
<label>Description</label>
</div>
</div>
<div class="row">
<div class="input-field col s12">
<input type="text" v-model="brand" v-on:change="setBrand(brand)" required>
<label>Brand</label>
</div>
</div>
<div class="row">
<div class="input-field col s12">
<input style="padding-top: 16px;" type="number" v-model="price" v-on:change="setPrice(price)" required>
<label>Price</label>
</div>
</div>
<UploadFile />
<button type="submit" class="btn btn-success">Submit</button>
<router-link to="/" class="btn grey">Cancel</router-link>
</form>
script:
export default {
name: 'createSale',
components: {
UploadFile
},
data() {
return {
articleName: '',
description: '',
brand: '',
price: ''
}
},
methods: {
...mapMutations('sale', [
'setArticleName',
'setDescription',
'setBrand',
'setPrice'
]),
...mapActions('sale', {
createSale: 'createSale',
console: 'console'
})
}

Answer 1

Your action need to be
createSale({state, getters}) {
console.log(state.articleName) //undefined
db.collection('clothes').add({
articleName: state.articleName,
description: state.description,
brand: state.brand,
price: state.price,
imagesRefs: getters.fileRefs
}).then(docRef => {
for (var i = 0; i < state.files.length; i++) {
}
this.$router.push('/')
}).catch(error => alert(error.message))
}
The first parameter which is passed to action is context object, you need to get state and getters from this context object.
Example from vuex website: