Using Vue 3 with Pinia in an Interia setup. I can see Pinia in my Dev Tools and I can console log out the (starting) value.
I have a component set up like:
<Comment>
<ChildComment>
In ChildComment, I have this function
const toggleEdit = () => {
commentStore.childEditing = !editMode.value
editMode.value = !editMode.value;
};
When I trigger this function, the value updates in the store:
In the <Comment> component, I have tried using various methods like so:
import { useStore } from "../../store/commentStore";
const commentStore = useStore();
// USING STATE DIRECTLY
// const isEditingChildComment = ref(commentStore.childEditing);
// const isEditingChildComment = reactive(commentStore.childEditing);
// const isEditingChildComment = computed(() => commentStore.childEditing);
// USING GETTER
// const isEditingChildComment = ref(commentStore.getChildEditing);
// const isEditingChildComment = reactive(commentStore.getChildEditing);
// const isEditingChildComment = computed(() => commentStore.getChildEditing);
But isEditingChildComment is never updated in any of the above 6 scenarios, it remains as false:
Am I missing something obvious?
If you use a computed property, you need to return a value. For example:
const isEditingChildComment = computed(() => {
return commentStore.childEditing);
}
It looks also if you are mutating the store state directly. I think you should use an Action for that, to guarantee the working of reactivity.
Try using the store.$subscribe function. Here's a link to the docs
Example from docs:
cartStore.$subscribe((mutation, state) => {
// import { MutationType } from 'pinia'
mutation.type // 'direct' | 'patch object' | 'patch function'
// same as cartStore.$id
mutation.storeId // 'cart'
// only available with mutation.type === 'patch object'
mutation.payload // patch object passed to cartStore.$patch()
// persist the whole state to the local storage whenever it changes
localStorage.setItem('cart', JSON.stringify(state))
})
Related
I am currently trying to learn Vue JS without ever having encountered Javascript.
All the brackets, arrows, etc. are driving me crazy.
With the Composition API, I come across a question that I can't successfully google.
That's working:
setup() {
const store = useStore ();
const packagingdata = ref ([]);
const loadpackagingdata = async () => {
await store.dispatch (Actions.LOADPACKAGING_LIST, 10);
packagingdata.value = store.getters.getPackagingData;
return {
packagingdata,
}
I can access {{packagingdata}}. That contains an array.
{{Packagingdata.products}}
does work
but {{packagingdata.products [0]}} doesn't work.
But when I add it to the setup () like this:
setup() {
const store = useStore ();
const packagingdata = ref ([]);
const getProducts = ref ([]);
const loadpackagingdata = async () => {
await store.dispatch (Actions.LOADPACKAGING_LIST, 10);
packagingdata.value = store.getters.getPackagingData;
getProducts.value = store.getters.getProducts;
};
return {
packagingdata,
getProducts
}
then {{ getProducts }} returns what I wanted even if the getter function only is like this:
get getAddress() {
return this.packagingdata["products"][0];
}
What is happening there?
What am I doing wrong? I would prefer to not create a ref() and getterfunction for every computed value.
Whats the solution with computed?
best regards
I found two methods to avoid the error.
add a v-if="mygetter.length" in the template
check in the getter whether the variable is set and otherwise return false
Both of these prevent an error already occurring when the page is loaded that [0] cannot be found
I'm working with vue-router and Vue 3. I have a view where I'd like to take the router url and use it to call a method to access an API. This method returns a promise I can use to populate my page. When calling my method with 'route.params.id', it says that the parameter is undefined. When I do console.log(route.params.id), it displays correctly in console. I've tried using a computed property instead, but I had the same issue.
Setup code:
import { ref } from "vue";
import MovieApiService from "../api/MovieApiService";
import { useRoute } from "vue-router";
export default {
setup() {
const movie = ref([]);
const route = useRoute();
MovieApiService.getMovie(route.params.id).then((response) => {
movie.value = response.data.results;
});
return {
movie,
};
},
method: {},
};
Method being called:
static getMovie(body: GetMovieByTmdbId) {
return axios.get(
`https://api.themoviedb.org/3/movie/${body.id}?api_key=${apiKey}`
);
}
Here's what I tried to compute the property instead, with the same result.
setup() {
const route = useRoute();
const id = computed(()=>{return route.params.id})
const movie = ref([]);
getMovie(id).then((response) => {
movie.value = response.data.results;
console.log(movie.value);
});
How should I ensure this value is available when I call my method?
You are giving route.params.id as a variable to getMovie(body).
You are then using body.id in your URL. This would equal route.params.id.id which is not defined.
Use body in your URL, or change the parameter to id so is makes more sense.
Like this:
...
const route = useRoute();
MovieApiService.getMovie(route.params.id).then((response) => {
movie.value = response.data.results;
});
...
const getMovie = (id) => {
return axios.get(
`https://api.themoviedb.org/3/movie/${id}?api_key=${apiKey}`
);
}
I am using Nuxt and Rollbar. I have a user id state in store.
My question is, how can I set this user id as a custom payload in the transformer function in rollbar.js WITHOUT using localStorage?
Here is my code:
// plugins/rollbar.js
const transformer = function(payload) {
payload.user_id = user_id_from_store // how to get this from store?
}
// store/index.js
export const state = () => ({
userId: ''
})
export const mutations = {
setUserId(state, userId) {
state.userId = userId
}
}
//components/MyComponent.vue
methods: {
fetch() {
const userId = fetchUserId()
this.$store.commit('setUserId', userId)
}
}
Things I have tried:
In rollbar.js, create and export a function which takes a context object as argument. Then call this function in transformer function to get user_id:
// plugins/rollbar.js
const getUserId = context => {
const user_id = context.store.state.userId
return user_id
}
const transformer = function(payload) {
payload.user_id = getUserId()
}
export default getUserId
When I console.log(context.store)in getUserId function, I got a Store object, but calling the function in transformer function threw Rollbar: Error while calling custom transform() function. Removing custom transform(). TypeError: Cannot read property 'store' of undefined.
At the end, OP succeeded thanks to inject, more info available here: https://nuxtjs.org/docs/2.x/directory-structure/plugins#inject-in-root--context
This one is indeed needed for libraries that are not directly into the Vue ecosystem but that we wish to have working in our Nuxt app.
Im struggling using Axios and useRoute using Axios with Composition API. Here is the code on how to do it in using the Option API, how do I recreate it, the Vue-router docs not well documented at all right now.
async created() {
const result = await axios.get(`https://localhost:5001/api/artists/${this.$route.params.id}`
);
const artist = result.data;
this.artist = artist;
},
To convert that code to Composition API:
created() hook is effectively the same timing as setup(), so put that code in setup().
this.$route can be accessed via useRoute() (from vue-router#4).
artist can be declared as a data ref, returning it from setup() if used in the template.
To reactively fetch data from the API based on the id parameter, use watch on route.params.id. This watch call returns a function that stops the watcher, which is useful if you need to conditionally unwatch the reference.
import { useRoute } from 'vue-router'
import { ref, watch } from 'vue'
export default {
// 1
setup() {
const route = useRoute() // 2
const artist = ref(null) // 3
// 4
const unwatch = watch(() => route.params.id, (newId, oldId) => {
const result = await axios.get(`https://localhost:5001/api/artists/${newId}`)
artist.value = result.data
// run only once
unwatch()
})
return {
artist
}
}
}
i'm building a complex form using this reactive obj
const formData = reactive({})
provide('formData', formData)
inside the form one of the components is rendered like this:
<ComboZone
v-model:municipality_p="formData.registry.municipality"
v-model:province_p="formData.registry.province"
v-model:region_p="formData.registry.region"
/>
this is the ComboZone render function:
setup(props: any, { emit }) {
const { t } = useI18n()
const { getters } = useStore()
const municipalities = getters['registry/municipalities']
const _provinces = getters['registry/provinces']
const _regions = getters['registry/regions']
const municipality = useModelWrapper(props, emit, 'municipality_p')
const province = useModelWrapper(props, emit, 'province_p')
const region = useModelWrapper(props, emit, 'region_p')
const updateConnectedField = (key: string, collection: ComputedRef<any>) => {
if (collection.value && collection.value.length === 1) {
console.log(`update:${key} => ${collection.value[0].id}`)
emit(`update:${key}`, collection.value[0].id)
} else {
console.log(`update:${key} =>undefined`)
emit(`update:${key}`, undefined)
}
}
const provinces = computed(() => (municipality.value ? _provinces[municipality.value] : []))
const regions = computed(() => (province.value ? _regions[province.value] : []))
watch(municipality, () => updateConnectedField('province_p', provinces))
watch(province, () => updateConnectedField('region_p', regions))
return { t, municipality, province, region, municipalities, provinces, regions }
}
useModelWrapper :
import { computed, WritableComputedRef } from 'vue'
export default function useModelWrapper(props: any, emit: any, name = 'modelValue'): WritableComputedRef<any> {
return computed({
get: () => props[name],
set: (value) => {
console.log(`useModelWrapper update:${name} => ${value}`)
emit(`update:${name}`, value)
}
})
}
problem is that the events emitted from useModelWrapper update the formData in the parent template correctly, the events emitted from inside the watch function are delayed by one render....
TL;DR;
Use watchEffect instead of watch
...with the caveat that I haven't tried to reproduce, my guess is that you're running into this issue because you're using watch which runs lazily.
The lazy nature is a result of deferring execution, which is likely why you're seeing it trigger on the next cycle.
watchEffect
Runs a function immediately while reactively tracking its dependencies and re-runs it whenever the dependencies are changed.
watch
Compared to watchEffect, watch allows us to:
Perform the side effect lazily;
Be more specific about what state should trigger the watcher to re-run;
Access both the previous and current value of the watched state.
found a solution, watchEffect wasn't the way.
Looks like was an issue with multiple events of update in the same tick, worked for me handling the flush of the watch with { flush: 'post' } as option of the watch function.
Try to use the key: prop in components. I think it will solve the issue.