CODEWITHSUNDEEP
javascriptreactjsfirebasegoogle-cloud-firestore
hello world
hello world

Reputation: 1755

Working with Firestore documents and collection data

I have a few documents with the following collection structure in Firestore

_fl_meta_: Object { createdBy: "Kz5vTvzlmGhRCxqKuDhrvvANqPe2", docId: "76qlSYWItERvJVnLKSDt", env: "production", … }
author: "asd"
content: "last 1"
date: "2019-06-19T12:00:00-07:00"
id: "76qlSYWItERvJVnLKSDt"
imageDeck: Array [ {…} ]
order: 0
parentId: 0
status: "published"
summary: "last 1"
title: "last 1"

im trying to loop thru my documents and render its collection data to my components but im having issues.

my query

const db = firebase.firestore();
db
  .collection('fl_content')
  .where('_fl_meta_.schema', '==', 'blog')
  .get()
  .then(querySnapshot => {
    querySnapshot.forEach(doc => {
      console.log(doc.data());
      // let results = Object.keys(doc.data()).map(function (key) {
      //   return [String(key), doc.data()[key]];
      // })
      // this.setState({ cards: results });
    });
  })
  .catch(error => {
    console.log("Error getting documents: ", error);
  });

that query outputs the above collection from firestore. thanks for the help

Upvotes: 2

Views: 149

Answers (1)

cbdeveloper
cbdeveloper

Reputation: 31315

Get your querySnapshot and map it to result in an array of objects containing your documents.

const querySnapshot = firebase.firestore().collection('fl_content')
  .where('_fl_meta_.schema', '==', 'blog').get()

.then((querySnapshot) => {
  // The following line will result in an array of objects (each object is your document data)
  const yourDocuments = querySnapshot.docs.map((doc) => doc.data());
  this.setState({cards: yourDocuments});
})
.catch((error) => {
  console.log(error);
});

Then you can do something like:

// INSIDE YOUR RENDER METHOD

const cardItems = this.state.cards.map((item,index) => 
  <CardComponent key={index}>
     {item.name} // Here you can access and display the fields of your documents
  </CardComponent>
);

return(
  <SomeContainerComponent>
     {cardItems}
  </SomeContainerComponent>
);

Upvotes: 1

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