I am trying to delete a document from firebase firestore collection how can I do that , I tried few things but no success here is my code

here is the Firestore hook

const useFirestore = (somecollection) => {

    const [docs, setDocs] = useState([]);


    useEffect (() => {
        // new collection reference
          const newcoll = collection(projectFirestore, somecollection);
          const q = query(newcoll, orderBy('createdAt', 'desc'));
          const unsub = onSnapshot(q, (snapshot) => {
            let documents = [];
            snapshot.forEach(doc => {
               documents.push({...doc.data(), id: doc.id})
            })
            setDocs(documents);
          });
     
          return () => unsub;

    },[somecollection]);
    
    return { docs };
}

the imagegrid where all the images are shown (only the js without the jsx return)

const { docs } = useFirestore('images');

  const handleDelete = (e) => {
    docs.forEach(doc => {
      deleteDoc(doc);
    })

now , on the imagegrid jsx I have all the uploaded images that store the document in them.

so I added a button to every image and I want that when I click the button its fires a handleDelete() that delete this specific image document from the firestore

CodePudding user response：

If you are trying to have a button that deletes a single document, you likely do NOT want to be looping over all of the docs and calling deleteDoc().

Instead, your UI would likely display each image and include its ID for each button. Something like:

const deleteOneImageDoc = async (docId) => {
  try {
    let docRef = doc(`images/${docId}`);
    await deleteDoc(docRef);
  } catch (ex) {
    console.error(`Delete FAILED: ${ex.message}`);
    throw ex;
  }
};

return <div>
  docs.map((imgDoc) => {
    return (
      <div key={imgDoc.id}>
        <img src={imgDoc.url}/>
        <button onClick={() => deleteOneImageDoc(imgDoc.id)}>
          delete {imgDoc.id}
        </button>
      </div>);
    })
  </div>;