I been trying to hide error messages onload and i want them to display on save . i succeeded in many scenarios and i am able to adjust my code accordingly but this seems to be continious bug i am unable to get rid of it .
My function:
function work() {
var self=this;
self.Time= ko.observable("");
self.Validation = ko.validatedObservable([
self.Time.extend({required:true}) ] );
self.calculate=ko.computed(function(){
return self.Time() * 2 ;
});
}
I added a Watch on this line self.mainArray.Validation.errors().length
As per my observation i debugged clearly to notice where the watch value getting incremented .
So i tried many ways to control the display of error message onLoad but it came to nothing like init , onlyif in extend etc
init i tried keep showmessages:false works one way but on save button click i can't further show messages
model.showerrormessages(false) does nothing
Working solution : Performance will get effected
ko.utils.arrayForEach(self.mainArray(), function (service) {
if (service.Validation.errors().length > 0) {
service.Validation.errors.showAllMessages(false);
}
});
Like this i have many loop inside loop structures i can't do same to everything and i just need something cool so i can hide messages onLoad .
I provided my observations any suggestion is quite handy here and if i can help you with more info please let me know.
This will only compute the validation on submit, and includes showing error messages - http://codepen.io/dmoojunk/pen/zxqYbb
Html -
<div class="container no-padding">
<div class="col-md-12 col-sm-12 col-xs-12">
<div class="col-md-4 col-sm-4 col-xs-12">
<div>
<div>
<p>Phone: <a href="tel:0123456789">0123456789</a></p>
<p>Email: <a href="mailto:a@b.com" target="_top">email@example.co.uk</a></p>
<pre data-bind="text: ko.toJSON($data, null, 2)"></pre>
</div>
</div>
</div>
<div class="col-md-8 col-sm-8 col-xs-12">
<div>
<div>
<form role="form">
<div class="row">
<div class="col-md-6">
<div class="form-group" data-bind="validationElement: firstName">
<label class="control-label" for="contact-name">First Name</label>
<input type="text" class="form-control" id="contact-name" placeholder="i.e Joe" data-bind="textInput: firstName"/>
<span class="help-block" data-bind="validationMessage: firstName"></span>
</div>
</div>
<div class="col-md-6">
<div class="form-group" data-bind="validationElement: email">
<label class="control-label" for="contact-email">Email</label>
<input type="email" class="form-control" id="contact-email" placeholder="i.e email@info.com" data-bind="textInput: email"/>
<span class="help-block" data-bind="validationMessage: email"></span>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="form-group" data-bind="validationElement: surname">
<label class="control-label" for="contact-surname"> Surname</label>
<input type="text" class="form-control" id="contact-surname" placeholder="i.e Bloggs" data-bind="textInput: surname"/>
<span class="help-block" data-bind="validationMessage: surname"></span>
</div>
</div>
<div class="col-md-6">
<div class="form-group" data-bind="validationElement: category">
<label class="control-label" for="contact-topic">Please select a category</label>
<select class="form-control" id="contact-topic" data-bind="value: category">
<option value="">Select category</option>
<option value="general">General contact</option>
<option value="issue">Report an issue</option>
<option value="help">Help enquiry</option>
</select>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div class="form-group" data-bind="validationElement: message">
<label class="control-label" for="contact-textarea">Write your message here, the more detail the better</label>
<textarea style="width:100%" id="contact-textarea" placeholder="Place message here" rows="10" data-bind="textInput:message"></textarea>
<span class="help-block" data-bind="validationMessage: message"></span>
</div>
<button type="button" class="btn btn-green" data-bind="click: submit">Get in touch</button>
</div>
</div>
</div>
</form>
</div>
</div>
</div>
And JS -
var mynamespace = mynamespace || {};
ko.validation.init({
errorElementClass: 'has-error',
errorMessageClass: 'help-block',
decorateElement: true,
insertMessages: false
});
//Viewmodel
mynamespace.ContactUsViewModel = function(){
var self = this;
self.validationEnabled = ko.observable(false);
self.isValidationEnabled = function() {
return self.validationEnabled();
}
self.firstName = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
minLength: {
onlyIf: self.isValidationEnabled,
params: 5
}
});
self.email = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
email: {
onlyIf: self.isValidationEnabled
}
});
self.surname = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
minLength: {
onlyIf: self.isValidationEnabled,
params: 5
}
});
self.category = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
minLength: {
onlyIf: self.isValidationEnabled,
params: 1
}
});
self.message = ko.observable('').extend({
required: {
onlyIf: self.isValidationEnabled
},
minLength: {
onlyIf: self.isValidationEnabled,
params: 5
}
});
self.submit = function() {
self.validationEnabled(true);
if (!this.isValid()) {
this.errors.showAllMessages();
} else {
alert('Form Valid');
};
}
};
var viewmodel = ko.validatedObservable(new mynamespace.ContactUsViewModel())();
ko.applyBindings(viewmodel);
