Utilize Firestore's limit feature with variables

Question

Utilize Firestore's limit feature with variables

Is it possible to utilize a variable (page) in the limit parameter within Firebase Firestore while using Vue?


export default {
  data() {
    return {
      page: 1,
    }
  },
  methods: {
  },
  firestore: {
    Words: db.collection("Words").where("incomplete", "==", true).limit(this.page)
  },
}

Unfortunately, this approach is not successful as it results in the following error:

Cannot read property 'page' of undefined

I've attempted using firebase.page and simply page, but I'm unable to figure out how to properly incorporate the variable in this manner. Any suggestions on how to achieve this?

javascript firebase vue.js google-cloud-firestore

Answer 1

Answer №1

The issue at hand pertains to the interpretation of "this" outside of a function context. Although I am not utilizing vuefire myself, after examining the documentation, it seems that the firestore property can also be declared as a function, similar to data(). This approach provides a functional environment for the usage of this...

data() {
  return {
    Words: [],
    page: 1,
  }
},
methods: {
},
firestore() {
  return {
    Words: db.collection("Words").where("incomplete", "==", true).limit(this.page),
  }
},

It's worth noting (another insight from browsing vuefire docs) that in order for Words to be properly linked to the instance, the property must be present in both the data() and firestore() functions.

Answer 2

The issue at hand pertains to the interpretation of "this" outside of a function context. Although I am not utilizing vuefire myself, after examining the documentation, it seems that the firestore property can also be declared as a function, similar to data(). This approach provides a functional environment for the usage of this...

data() {
  return {
    Words: [],
    page: 1,
  }
},
methods: {
},
firestore() {
  return {
    Words: db.collection("Words").where("incomplete", "==", true).limit(this.page),
  }
},

It's worth noting (another insight from browsing vuefire docs) that in order for Words to be properly linked to the instance, the property must be present in both the data() and firestore() functions.

Answer 3

Answer №2

The issue you are experiencing is not related to Firestore but instead is due to the limited accessibility of this within your custom $option firestore.

To resolve this, consider implementing the following solution:

methods: {
  firestore() {
    return db.collection("Words").where("incomplete", "==", true).limit(this.page).get()
  }
},

It's important to note that this function will return a Promise that needs to be handled appropriately.

Answer 4

The issue you are experiencing is not related to Firestore but instead is due to the limited accessibility of this within your custom $option firestore.

To resolve this, consider implementing the following solution:

methods: {
  firestore() {
    return db.collection("Words").where("incomplete", "==", true).limit(this.page).get()
  }
},

It's important to note that this function will return a Promise that needs to be handled appropriately.

Utilize Firestore's limit feature with variables

Answer №1

Answer №2

Similar questions

The error message for validating my form magically disappears

The function Document.getElementsByName() behaves differently in Internet Explorer, returning an object, compared to Chrome where it returns

Getting a vector layer from JSON in OpenLayers 3 can be achieved by following these steps

Enable lodash access throughout a React Native application

Unable to open modal in browser due to HTML, CSS, and jQuery issues

TranslateY animation glitching

What could be causing this Vue.js component to show the body of a function instead of its intended output?

What is the best way to change the name of a property within an object

What is the best way to apply typography theme defaults to standard tags using Material-UI?

The ins and outs of function returns and callback mechanisms

How can I ensure the button remains disabled until all inputs are completed in Redux form?

Angular: displaying dates in a specific format while disregarding time zones

A streamlined method for generating an array containing all numerical string values

Fetching values from dynamically generated elements in a Vue.js loop

Interact with the exe/jar files on a remote machine using JavaScript

Guide to adding information to a file in Nodejs depending on a condition

Enhance the functionality of your Rails application by implementing Ajax or jQuery to asynchronously load table elements separately from the page

You will encounter a TypeError with the message "Super expression must be null or a function" when attempting to export a named class

What could be the reason for my electron application consistently displaying false results when using Google Authenticator, despite entering the correct token?

Measuring Load Time Percentage in AngularJS Using $http Requests