I am trying to display error message (show simple toast of error) outside from textformfield when I click submit button in login screen.
currently, error show in bottom of textformfield like this.
I am trying to display error message like this
I am trying to display error message (show simple toast of error) outside from textformfield when I click submit button in login screen. Currently error show in bottom of textformfield.i am trying to display error message in toast form.
First you need to 1 String for each field
String nameError = '';
Now you need to create validation function for this field like
void invalidName() {
nameError = "Enter name";
}
Now you need to create function where you can check all validation
bool validateInput() {
try {
if (email.isNotEmpty) {
return true;
} else {
if (nameController.text.isEmpty) { // Here check your controller value
invalidName(); // here define validation error
...
...
}
return false;
}
} catch (e) {
return false;
}
}
Now you just need to call validateInput() function in your button if it return true then call your API or something otherwise shows an error in toast message
nameError == '' ? SizedBox() : FlutterToast(nameError)
Related
What is the proper way to check if the list of elements is loading for the first time and if it has the exception to show the error to user?
As I understand I should create the variable which will indicate that I have the first list of item loading, so I wrote something like this:
bool isFirstLoading = true;
Future<void> loadItems()async{
if(!isFirstLoading){
final value = await model.loadListPlaceAgain();
}else if(isFirstLoading && Exception is true){
return _dialogController.showSnackBar(const PaginationBarError());
}
}
I have a bootbox confirm dialog box. In that, I have some form validation.Validation working fine and as long as validation fails confirm dialog box still opens. But when I click on the cancel button, still it is asking for validation.
bootbox.confirm({
closeButton: true,
message: valid_result,
size: 'large',
title: 'Fill fields with related values',
buttons : {
confirm : { label: '<i class="fa fa-check"></i> Validate'}
},
callback: function () {
var res = getLinkupInformation(ids_string)
if(res == true) {
return true;
} else {
return false;
}
}
});
The validation part is working and if validation passed then only modal was closing. But when user click on the cancel button or close icon still it is asking validation. When I remove return false in call back function in else part then the validation button is not working and when I click on the validate button confirmation dialog box was closing.
Please guide me how to solve this issue?
The callback expects you to supply an argument, like so:
callback: function (result) {
}
If the user cancelled the dialog, either by clicking Cancel or the close (x) button, then result (or whatever you called your argument) will be the value false. You would use that value like this:
callback: function (result) {
if(result) {
/* your code here */
}
}
This is more or less covered in the documentation.
I am using 1000hz BootstrapValidator and after click on button (not submit because I need to stay on page without refresh) I want to check if form is correct.
I just can call $("#form2").validator('validate'); but I am not able to get return value.
I know about isDefaultPrevented but it is called after submit and I do not want submit.
$('#form').validator().on('submit', function (e) {
if (e.isDefaultPrevented()) {
// handle the invalid form...
} else {
// everything looks good!
}
})
Yeah one way is to change the from submit button type from submit to buttonand handle the validation via click function and count the length if any input field has error ($('#form2').validator('validate').has('.has-error').length) and handle it with if/else condition.
$(document).ready(function(){
$("#myButton").click(function() {
if ($('#form2').validator('validate').has('.has-error').length) {
alert('SOMETHING WRONG');
} else {
//$("#form2").submit();
alert('EVERYTHING IS GOOD');
}
});
});
Fiddle Example
I am trying to add some validation logic to the code plugin for tinyMCE.
It seems, however, that when a window's onSubmit function is called, the window closes by default.
The onSubmit function currently looks like this:
onSubmit: function (e) {
// We get a lovely "Wrong document" error in IE 11 if we
// don't move the focus to the editor before creating an undo
editor.focus();
editor.undoManager.transact(function () {
editor.setContent(e.data.code);
});
editor.selection.setCursorLocation();
editor.nodeChanged();
}
What I would like to do is add some validation logic to the plugin to prevent tinyMCE from reformatting invalid html and, rather, display a message that the html is invalid. Essentially, something like this:
onSubmit: function (e) {
// We get a lovely "Wrong document" error in IE 11 if we
// don't move the focus to the editor before creating an undo
var isCodeValid = true;
//check if code valid
isCodeValid = ValidateCode(e.data.code);
if (isCodeValid) {
//if code valid, send to tinyMCE to let it do it's thing
editor.focus();
editor.undoManager.transact(function () {
editor.setContent(e.data.code);
});
editor.selection.setCursorLocation();
editor.nodeChanged();
}
else {
//if code invalid, display error message and keep text editor window open
tinyMCE.activeEditor.windowManager.alert("Your HTML is invalid. Please check your code and try submitting again.");
return;
}
}
However, it seems that the onSubmit function closes the text editor window regardless. I was wondering if there is a way to stop it from doing this. I have scoured the documentation which leaves much to be explained and have looked at other plugins as examples. The closest I can find is the searchandreplce plugin. The 'Find' button calls the onSubmit function, but it seems to stay open if the 'find' text field is blank. However, the logic behind it seems very different from what I can use in the Code plugin as it is.
Can anyone who is familiar with the tinyMCE API give me any ideas on how to prevent the window from closing when onSubmit is called? Or do I have to go another route?
As per this question the way to cancel an event is to return false;. This will keep the popup open. Your code would then become:
onSubmit: function (e) {
// We get a lovely "Wrong document" error in IE 11 if we
// don't move the focus to the editor before creating an undo
var isCodeValid = true;
//check if code valid
isCodeValid = ValidateCode(e.data.code);
if (isCodeValid) {
//if code valid, send to tinyMCE to let it do it's thing
editor.focus();
editor.undoManager.transact(function () {
editor.setContent(e.data.code);
});
editor.selection.setCursorLocation();
editor.nodeChanged();
}
else {
//if code invalid, display error message and keep text editor window open
tinyMCE.activeEditor.windowManager.alert("Your HTML is invalid. Please check your code and try submitting again.");
return false;
}
}
I figured it out finally. All you need to do is add e.preventDefault(); at the start of the onSubmit function and the window will not close. The documentation was no help, but looking at the searchandreplace plugin as an example lead me to the answer. What I have now is like this:
onSubmit: function (e) {
e.preventDefault();
// We get a lovely "Wrong document" error in IE 11 if we
// don't move the focus to the editor before creating an undo
var isCodeValid = true;
//check if code valid
isCodeValid = ValidateCode(e.data.code);
if (isCodeValid) {
//if code valid, send to tinyMCE to let it do it's thing
editor.focus();
editor.undoManager.transact(function () {
editor.setContent(e.data.code);
});
editor.selection.setCursorLocation();
editor.nodeChanged();
}
else {
//if code invalid, display error message and keep text editor window open
tinyMCE.activeEditor.windowManager.alert("Your HTML is invalid. Please check your code and try submitting again.");
return;
}
}
e.PreventDefault() seems to stop the default behavior of the onSubmit function.
winJS listview error on navigation
Hi I am working on a WinJS application.I am using listview to list data.If i navigate to another page before finishing the data loading it shows error like ListView is undefined.How to resolve this issue?
Need to cancel the worker(promise) before moving to the next page. something like this:
unload: function unload()
{
if (this._loadPromise)
this._loadPromise.cancel();
},
loadListData: function load()
{
this._loadPromise = WinJS.xhr(..).then(function onxhrcomplete(req)
{
...
}).then(null, function onerror(error)
{
if (error.message == 'Canceled')
return;
// do error handling like showing message box or throw an error object
});
}