CODEWITHSUNDEEP
fluttergoogle-cloud-firestoreflutter-layoutflutter-dependencies
Blen
Blen

Reputation: 161

How to search and display results from an array field in cloud firestore in flutter?

The logic behind my search function is, The searchKey field stored a value's capitalized first letter. Basically, I will store any value with it's searchKey; which is the values First letter capitalized and stored in a new field called SearchKey.

I wanted to display searched results from an array in Cloud Firestore. The code I have written for a string field works perfectly. Here it is: 

void initiateSearch(String val) async {
if (val.length == 0) {
  setState(() {
    queryResultSet = [];
    tempSearchStore = [];
    queryResultGigSet = [];
    tempSearchGigStore = [];
    queryResultTagSet = [];
    tempSearchTagStore = [];
  });
}

String capitalizedValue =
    val.substring(0, 1).toUpperCase() + val.substring(1);
    if (queryResultGigSet.length == 0 && val.length == 1) {
  // SearchService().searchByName(val);

  await databaseReference
      .collection('posts')
      .where('searchKey', isEqualTo: val.substring(0, 1).toUpperCase())
      .getDocuments()
      .then((QuerySnapshot docs) {
    for (int i = 0; i < docs.documents.length; ++i) {
      setState(() {
        isLoading = false;
        queryResultGigSet.add(docs.documents[i].data);
      });
    }
  });
} else {
  tempSearchGigStore = [];
  queryResultGigSet.forEach((element) {
    if (element['category'].startsWith(capitalizedValue)) {
      setState(() {
        isLoading = false;
        tempSearchGigStore.add(element);
      });
    }
  });
}

But For an array it isn't working. The code I have written is :

    if (queryResultTagSet.length == 0 && val.length == 1) {
  // SearchService().searchByName(val);

  await databaseReference
      .collection('posts')
      .where('searchKeyTags', arrayContains: val.substring(0, 1).toUpperCase())
      .getDocuments()
      .then((QuerySnapshot docs) {
    for (int i = 0; i < docs.documents.length; ++i) {
      setState(() {
        isLoading = false;
        queryResultTagSet.add(docs.documents[i].data);
      });
    }
  });
} else {
  tempSearchTagStore = [];
  queryResultTagSet.forEach((element) {
    if (element['tags'].values.startsWith(capitalizedValue)) {
      setState(() {
        isLoading = false;
        tempSearchTagStore.add(element);
      });
    }
  });
}
}
 }

Upvotes: 0

Views: 108

Answers (1)

Blen
Blen

Reputation: 161

the answer is 

    if (queryResultTagSet.length == 0 && val.length == 1) {
  // SearchService().searchByName(val);

  await databaseReference
      .collection('posts')
      .where('searchKeyTags',
          arrayContains: val.substring(0, 1).toUpperCase())
      .getDocuments()
      .then((QuerySnapshot docs) {
    for (int i = 0; i < docs.documents.length; ++i) {
      setState(() {
        isLoading = false;
        queryResultTagSet.add(docs.documents[i].data);
      });
    }
  });
} else {
  tempSearchTagStore = [];
  queryResultTagSet.forEach((element) {
     List.from(element['tags']).forEach((p) {
      if (p.toString().startsWith(capitalizedValue)) {
        setState(() {
          isLoading = false;
          tempSearchTagStore.add(element);
        });
      }
    });
  });
}

Upvotes: 1

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