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vue-3-firestore

vue-3-firestore

An easy way to interact with Firestore using vue 3 and the composition-api.

Examples:

Get started

yarn add vue-3-firestore

in your .vue file

 <template lang="html">
  <p>{{ data }}</p>
</template>

<script lang="ts">
import { defineComponent, ref } from '@vue/composition-api'
import useFirestore from 'vue-3-firestore'
export default defineComponent({
  setup() {
    const uid = ref('1')

    const { data, loading } = useFirestore({
      queryType: 'doc',
      type: 'watch',
      path: 'collection/$uid',
      variables: {
        uid
      }
    })

    return {
      data
    }
  }
})
</script>

<style lang="scss" scoped></style>

Usage

 const results = useFirestore<ReturnDataType>(options)

Options

param type required? default description
queryType string true The type of this query - 'collection' or 'doc'
type string true The type of the get function - 'watch' or 'get'. 'get' does a single get() from firestore. 'watch' watches for document or collection changes and updates the data recieved
path string true Path to the document or collection in firestore. Use $variableName to insert reactive variable data into the path. If the path includes variables, the options object must include a 'variables' key
variables Object false Variables that should be used to construct the path to the document or collection in firestore. If a variable changes the path, data will be re-fetched. Variable values should be a vue ref. Variable keys should match those in the path string
debounce number false 200 The debounce amount in milliseconds that should be waited between a path change and getting the data from firestore. Useful to change if a variable is bound to a text input. Defaults to 200
initialLoading boolean false true The initial state of the loading return value. Defaults to true. Setting to false could be helpful in manual mode
manual boolean false false When in manual mode, data will not automatically be fetched or watched initially or on path change. It will be up to you to call the getData or watchData function.
onError function false console.error Exposes a function to customise error handling. Defaults to console.error(e)
query function false Exposes a function to extend the firestore query for the collection eg: add a '.where()' function or '.limit()'. The returned Query object will be used to get or watch data
mutate function false Exposes a function to mutate the data that is fetched from firestore. The mutated data will be returned as 'mutatedData'
onRecieve function false Exposes a hook for when a collection is recieved. Provides access to the recieved data and mutated data

Return values

param type description
data Ref<T | T[] | null> The data returned from the collection as a reactive array or an ampty array if no data has been fetched yet
loading Ref<boolean> The loading state of the data fetch. Will be true when an async data fetch operation is happening. Works reactively as expected.
recieved Ref<boolean> A reactive boolean value to indicate if data has been recieved yet. Will be false as soon as data has been recieved and will stay false thereafter.
pathReplaced ComputedRef<string> A reactive string of the path with $variables replaced with the true variable value from the 'variables' input object
mutatedData Ref<M | null> Reactive mutated data returned from the mutate() function. If no mutate function is passed, will be equal to 'data'. Will be null until initialised and 'recieved' === true
firestoreRef ComputedRef<CollectionRef | Docref> A reactive computed prop that returns the firestore collection reference query
firestoreQuery ComputedRef<Query> A reactive computed prop that returns the firestore Query if the 'query' input function is used, else it will be null
updateDoc (updates: Partial<T>) => Promise<void> Exposes a method for updating the doc via the current firestore DocumentReference. Uses the firestore().doc(pathReplaced).set() function with the { merge: true } options. This way, it can be used to set a new doc as well as update an existing
deleteDoc () => Promise<void> Exposes a method for deleting the doc via the current firestore DocumentReference - firestore().doc(pathReplaced).delete()
watchData () => void Exposes a function to initiate a firestore document/collection listener via the onSnapshot method.
stopWatchData () => void Exposes a function for tearing down a firestore onSnapshot listener. Will be called on the onUnmounted hook of this component regardless of the manual mode setting.
getData () => Promise<{ data: T; mutatedData: M | null }> getData provides a function for getting data from firestore. firestore().doc(${path}).get

Examples

All of the examples below are within the context of the Vue composition api setup() function. eg:

 import { defineComponent, ref } from '@vue/composition-api'
import useFirestore from 'vue-3-firestore'
export default defineComponent({
  setup() {
    // code examples
  }
})

This will save these docs from having a load of boiler 😅

Get Doc (without variables)

 const { data, loading } = useFirestore({
  type: 'get',
  queryType: 'doc',
  path: 'collection/doc'
})
return { data, loading  }

Get Doc

 const uid = ref('1')
const { data, loading  } = useFirestore({
  type: 'get',
  queryType: 'doc',
  path: 'collection/$id',
  variables: {
    id: uid
  }
})

return { data, loading  }

Get Collection (without variables)

 const { data, loading  } = useFirestore({
  type: 'get',
  queryType: 'collection',
  path: 'collection/doc/subCollection'
})

return { data, loading  }

Get Collection

 const uid = ref('1')
const { data, loading  } = useFirestore({
  type: 'get',
  queryType: 'collection',
  path: 'collection/$id/subCollection',
  variables: {
    id: uid
  }
})

return { data, loading  }

Watch Doc

 const uid = ref('1')
const { data, loading  } = useFirestore({
  type: 'watch',
  queryType: 'doc',
  path: 'collection/$id',
  variables: {
    id: uid
  }
})

return { data, loading  }

Watch Collection

 const uid = ref('1')
const { data, loading  } = useFirestore({
  type: 'watch',
  queryType: 'collection',
  path: 'collection/$id/subCollection',
  variables: {
    id: uid
  }
})

return { data, loading  }

With Typesctipt

 interface UserType {
  firstName: string
  lastName: string
}

const uid = ref('1')
const { data: user, loading } = useFirestore<UserType>({
  queryType: 'doc',
  type: 'watch',
  path: 'users/$uid',
  variables: {
    uid
  }
})

const fullName = computed(() => {
  return `${user.value?.firstName} ${user.value?.lastName}`
})

return { user, loading }

With Typesctipt and Mutation of incoming data

 interface UserType {
  firstName: string
  lastName: string
}
type fullName = string

const uid = ref('1')
const { mutatedData, loading } = useFirestore<UserType, fullName>({
  queryType: 'doc',
  type: 'watch',
  path: 'users/$uid',
  variables: {
    uid
  },
  mutate(data) {
    const { firstName, lastName } = data
    return `${firstName} ${lastName}`
  }
})

return { fullName: mutatedData, loading }

Manual mode get

 interface UserType {
  firstName: string
  lastName: string
}

const uid = ref('1')
const { data: user, loading, getData } = useFirestore<UserType>({
  queryType: 'doc',
  type: 'get',
  path: 'users/$uid',
  variables: {
    uid
  },
  manual: true
})

const changeUserAndGetData = async(userId: string) => {
  uid.value = userId
  const newData = await getData()
  console.log(newData) // same as user.value
}

onMounted(() => {
  getData()
})

return { user, loading, changeUserAndGetData }

Manual mode watch

 interface UserType {
  firstName: string
  lastName: string
}

const uid = ref('1')
const { data: user, loading, watchData, stopWatchData } = useFirestore<UserType>({
  queryType: 'doc',
  type: 'watch',
  path: 'users/$uid',
  variables: {
    uid
  },
  manual: true
})

const changeUserAndWatchData = async(userId: string) => {
  stopWatchData()
  uid.value = userId
  watchData()
}

return { user, loading, changeUserAndWatchData }

Update and Delete helpers

 interface UserType {
  firstName: string
  lastName: string
}

const uid = ref('1')
const { data: user, loading, updateDoc, deleteDoc } = useFirestore<UserType>({
  queryType: 'doc',
  type: 'watch',
  path: 'users/$uid',
  variables: {
    uid
  }
})

const updatingUser = ref(false)
const updateUser = async (updates: Partial<UserType>) => {
  try {
    updatingUser.value = true
    await updateDoc(updates)
    updatingUser.value = false
  } catch (e) {
    updatingUser.value = false
    console.error(e)
  }
}

const deletingUser = ref(false)
const deleteUser = async (updates: Partial<UserType>) => {
  try {
    deletingUser.value = true
    await deleteDoc()
    deletingUser.value = false
  } catch (e) {
    deletingUser.value = false
    console.error(e)
  }
}

return { user, loading, updateUser, deleteUser }

Extending a query (order, where, limit)

 interface UserType {
  firstName: string
  lastName: string
}

const { data: activeUsers, loading } = useFirestore<UserType>({
  queryType: 'collection',
  type: 'watch',
  path: 'users',
  query(collectionRef) {
    return collectionRef.where('status', '==', 'active').orderBy('lastName').limit(1)
  }
})

return { activeUsers, loading }

Roadmap

  • Make into vue plugin and inject into SetupContext

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