CODEWITHSUNDEEP
androidfirebasefirebase-realtime-database
Fayaz Aralikatti
Fayaz Aralikatti

Reputation: 105

Firebase child inside another child

Can someone help me out with a firebase problem I am having, I want to add a child inside another child, I know this is simple, but since I am new to firebase, I will really appreciate any help regarding this, please let me know, if this question needs improvement in formatting, so that I can get better at stack overflow.

Adding item from this function

    public void addItem(Item model) {
    Item item = new Item();
    item.setItem(model.getItem());
    item.setPonum(model.getPonum());
    item.setQty(model.getQty());
    item.setSupplier(model.getSupplier());
    item.setContact(model.getContact());
    item.setTransporter(model.getTransporter());
    item.setLrnum(model.getLrnum());
    item.setRemarks(model.getRemarks());

    String key = mDatabase.child("Items").push().getKey();
    Map<String, Object> postValues = item.toMap();

    Map<String, Object> childUpdates = new HashMap<>();
    childUpdates.put(key, postValues);
    mDatabase.updateChildren(childUpdates);
}

I need exception only for the remarks section, I will upload pics of what exactly I have in mind, below image is what I currently have, I want the database like the second image What I currently have

What I Need

Upvotes: 1

Views: 3471

Answers (2)

koceeng
koceeng

Reputation: 2163

I think your Item object should look like this:

public class Item {

    private String contact;
    private String item;
    private String lrnum;
    private String ponum;
    private String qty;
    private HashMap<String, String> remarks;
    private String supplier;
    private String transporter;

    // ... you configure setting method by setter or constructor, your choice

    public String getContact() {
        return contact;
    }

    public String getItem() {
        return item;
    }

    public String getLrnum() {
        return lrnum;
    }

    public String getPonum() {
        return ponum;
    }

    public String getQty() {
        return qty;
    }

    public HashMap<String, String> getRemarks() {
        return remarks;
    }

    public String getSupplier() {
        return supplier;
    }

    public String getTransporter() {
        return transporter;
    }

    // and maybe add this to easily add one remarks
    public void addRemark(String remarkKey, String remark) {
        if (remarks == null)
            remarks = new HashMap<>();

        remarks.put(remarkKey, remark);
    }
}

Then you only need this lines of code to insert it into your Firebase database:

public void addItem(Item model) {
    mDatabase.child("Items").push().setValue(model);
}

Upvotes: 1

Rahul
Rahul

Reputation: 10625

Get a reference of your Node where you have to push new data.

Firebase newRef = ref.child("Key_of_root_node").child("remarks_parent_node").child("remarks").push();
newRef.setValue("Hi I am Comment");

Push will generate key for you, so no need to do handling for generating keys like Comment1, Comment2.

Upvotes: 1

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