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firestore v9 addDoc and setDoc collection() doc()

Confused Crossbill answered on November 11, 2021 Popularity 4/10 Helpfulness 2/10

answer firestore v9 addDoc and setDoc collection() doc()

firestore v9 addDoc and setDoc collection() doc()

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// creates the root collection with some data. 
  ( async () => {
    let collRef = await collection(db  , "users");  // returns a collection ref. ie. creates one if one does not exist. 
    let inputObject = { name : "trying to create a collection"}
    await addDoc(collRef , inputObject , { merge : true})
    console.log("collection and its document added now ");
  })()

  // using setDoc and doc() to create a document ie. we give it a name/id 
  ( async() => {
    let docRef = await doc( db , "users/newDoc" ) // create this document newDoc at this path
    await setDoc( docRef , { name : "firstDocument"});
    console.log("first document set inside the users collection");
  })


  // using addDoc and collection() to create a doc ie. we make firebase give the document an autogenerated id/name
  ( async() => {
    let collRef = await collection( db , "users");
    await addDoc( collRef , { name : "doc made using collRef and addDoc() function"} );
    console.log("I finally understand how collection() works and what is its purpose");
  })

  // creating a subcollection inside the firstDocument document
  (async() => {
    // will crate a new collection inside j1hxFeD....... document, call it myCollectionName and return its ref
    let collRef = await collection( db , "users/firstDocument/myCollectionName");
    await addDoc( collRef , { name : "unnamed collection. firebase has chosen its name"})
    console.log("a new coll has been created");
  });

Popularity 4/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript

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Contributed on Nov 11 2021

Confused Crossbill

0 Answers Avg Quality 2/10

firestore v9 addDoc and setDoc collection() doc()

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