When saving data to the Firebase database I want every data to be saved according to its data type. But my all data is stored in String. How can I do it in flutter... like Amount will be int, Through will be String

[ here is my function

sandDataToDB() async {
CollectionReference _collectionReferance =
    FirebaseFirestore.instance.collection("Use-of-fund");
return _collectionReferance
    .doc()
    .set({
      "Details of Sector": _DetailsofSectorController.text,
      "Through": _ThroughController.text,
      "Amount": _AmountController.text,
      "Date": _DateController.text,
    })
    .then((value) => dialog())
    .catchError((error) => Fluttertoast.showToast(msg: "something wrong"));

}

here is all code

  customAdminTextField(
                          "Details of Sector", _DetailsofSectorController),
                      customAdminTextField("Through", _ThroughController),
                      customAdminTextField("Amount", _AmountController),
                      customAdminTextField("Date", _DateController),
                      const SizedBox(
                        height: 10,
                      ),
                      customSubmitButton("Submit ", () {
                        sandDataToDB();

                      })

CodePudding user response：

You have to parse your data. An example for an integer:

...    
"Amount": int.parse(_AmountController.text),
...

Here you can find the supported data types.

CodePudding user response：

According to your question, you might be using the controller in TextFormField, you can get the value of the TextFormField.

This widget covers a TextField widget in a FormField for convenience.

It is not necessary to have a Form ancestor. The Form merely simplifies the process of saving, resetting, or validating numerous fields at the same time. To use without a Form, supply a GlobalKey to the constructor and save or reset the form field with GlobalKey.currentState.

TextEditingController.text defines the initialValue when a controller is defined. A controller should be given if this FormField is part of a scrolling container that generates its children lazily, such as a ListView or a CustomScrollView. A stateful widget ancestor of the scrolling container should handle the controller's lifetime.

Example code:

TextFormField(
  decoration: const InputDecoration(
    icon: Icon(Icons.person),
    hintText: 'What do people call you?',
    labelText: 'Name *',
  ),
  onSaved: (String? value) {
    // This optional block of code can be used to run
    // code when the user saves the form.
  },
  validator: (String? value) {
    return (value != null && value.contains('@')) ? 'Do not use the @ char.' : null;
  },
)

You can also use the onSubmitted parameter in TextFormField. Like: onSubmitted: (String value)

Additionally, you can use something like this in the following code:

_formKey.currentState.save(); calls the onSaved() on each textFormField item, which gives all the fields a value and allows you to utilize them as needed.