Trigger validation based on drop down value - struts2

I'm working in Struts 2. I want to make two text fields "required" based on the value selected in a drop down. I got so far as making them "required" using js so that the form does not submit anymore when the two fields are empty. Now i want a field error above the text box saying the fields are mandatory. What is the best way to achieve this?

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orbeon forms - Dynamic Dropdown remove value

I’m using Oberon forms version 2019.2 CE.
In my form I have Dynamic Dropdown (with search) with country select (required field) and Text field with display code of selected country:
When I select country, in text field appears selected country code:
Now I can click ‘x’ sign to remove value form drop down:
Value in field 'code' has not been deleted. When I click Validate button no error is detected. It seems that when I use 'x' sign to remove value from dropdown, I remove only label, not value.
My question is whether it is possible to remove both label and value, when I click 'x' sign?
I am unable to reproduce this with Orbeon Forms CE 2019.2. This is what I am seeing when running this form. If this doesn't help, I'd recommend you update your question to include a link to a minimal form that you are using to reproduce this, with steps to reproduce (and then post a comment, for notification).
It looks like the problem occurs when I use ‘Service performs search’ option set to ‘Yes’. Below you can see how it looks like in my form:
Source code of the form: here

Conditional show/hide fields based on show/hide links

What I try to do is very simple.
I have some fields in a form that are optional to fill. To make the form look cleaner, I'd like to show simple links as Add field and display the optional fields below via js unobstructedly.
If the field is present, it will be saved into the database. The field would also have a delete link. When this delete link is clicked, the field will be removed and also its value from the database when saved.
Seems pretty simple, yet I haven't found a simple approach to this. The whole solution involves many aspects such as passing hidden data to the controller to see if the record was hidden in order to delete its data from the database.
I would prefer a gem already optimized for this purpose but I couldn't found any. What I found is intended for associated records but this is not the case. These are not associations, just optional attributes from the same model.
nested_form_fields gem its also not suitable since it needs a checkbox or radio button to be triggered and not Add field/Remove field links which I believe look cleaner.
Is there such thing as a gem to accomplish this simple thing?
Instead of trying to send hidden data etc. Why don't you just load all the form fields but display:none. When a user clicks the 'show' button you display the field. If the click the hide button, just set the field to null and hide it.
When your form reaches the controller it will save the null value to the db for the hidden fields (same as if you deleted the value).

How to show required field validation conditionally from a view

In My MVC 4 application, I have a Multi Select List Box, where I can select multiple values, I also has an Item New Role as one of the list items, which also refers to a model property NewRole.
So using Jquery whenever the user selections contain New Role, I will provide a text box to the user, which is bind to NewRole from model as given,
#Html.TextBoxFor(m => m.NewRole)
Which also has the following evaluation field.
#Html.ValidationMessageFor(m => m.NewRole)
And I will hide this text-box if the user selected options does not has the Item New Role.
Now the problem is even if I hide the div which contain the Text Box, it will try evaluating the required field validation.
What I require is When User Selects New Role and the User did not enter anything in the provided text Box then validate the required field property.
I know I can write a JQuery to show an alert when the div visible and does't has any value. But I want this default validation should happen on that condition.
is it possible?
One of the trick to avid certain client side validation conditionally ... you can use the IGNORE attribute of the validation ...
jQuery Validate Ignore elements with style
$("#myform").validate({
ignore: ":hidden"
});
If this is not what you are looking ... I will provide more specific information
Yes it is possible with RemoteAttribute. Take a look at this article:
http://msdn.microsoft.com/en-us/library/gg508808(v=vs.98).aspx
Keep in mind that this is NOT client side validation meaning there is an actual server post happening.
Try using the rules add and remove, when new role is selected add new rule which validates the textbox on other selection remove the rule from text box and hide it like you are doing:
http://validation.bassistance.de/rules/

How can I manipulate a form / inputs to be ignored when a form is submitted

I'm using ExpressionEngine and SafeCracker along with Ajax (plugin: jquery.form.js - http://jquery.malsup.com/form/).
Best I can tell, SafeCracker will only allow for updating a single entry at a time. However, the UI / UX necessitates that a list be displayed. I've proof of concept'ed an entry by entry on-demand form. That is, click a particular edit link next to each entry and a snippet of jquery creates a form along with displaying a submit button. Click submit and that single entry updates. The inputs don't exist until the Update link is clicked
What I would prefer to do, if possible, is to create the non-form and form versions of each entry as the page is renbered and use some sort of toggle to display one or the other. Again, doable. Then, when I click the Edit link I'd add the necessary attributes to the input so that entry's form elements will be read but the other (display: none) elements for the other entries will be ignored. I'm thinking (out loud) that if I add the attr("name", some-value) that would work. That is, an input with no name will be ignored.
Yes, I can test this and I will. However, even if it works I'm not sure if it's a best practice and/or there's a more ideal way of accomplishing my ends. I'm here looking for validation and/or additional expertise and input.
Thanks in advance.
Just set disabled property to inputs and they will excluded from Form submission, whatever input fields are hidden or visible. Different jQuery methods, like submit() and serialize() follow specification of HTML 4 and exclude all disabled controls of a forms. So one way is to set
$('your_input').prop('disabled', true);
or ,
$('your_input').attr('disabled', 'disabled');
Check following link:
http://www.w3.org/TR/html401/interact/forms.html#successful-controls
Also, you may use a general button instead of a submit, as result you can handle click event on it and within that event you can make exclusion, validation, manipulation on values and what ever you like.
You can put a disabled attribute on them server side or set the property via jQuery:
$(".hidden input").prop("disabled", true);

How to blank out a field in an MVC app using TinyMCE

I've got an MVC app that gives the user textarea's to update some description fields. It's strongly-typed to a table object, and the fields are wrapped in a form with a Submit button.
Occaisionally they don't want any data in a field, but when they delete the text and try to save, the blanked-out field comes back with its original text (i.e. the table object passed to the Save action contains other edits, but attempts to blank out fields result in the original text staying in the field).
I'm assuming this is LINQ trying to determine which fields have been edited, but how do you tell it that it's blank on purpose?
UPDATE: It appears this may be a problem with the TinyMCE jQuery plugin. It adds rich-text functionality to textarea controls. If I turn it off, I can remove text with no problems.
UPDATE 2: It seems to be some kind of javascript bug or something. If I put another dummy field after the problem fields, they work. If I move them to another place in my code, they work. They just don't want to work where they are. Very peculiar.
I'm pretty sure that TinyMCE, by default, puts in <p></p> when the control is emptied.
So if you are checking for "" then you may be disapointed.
This initially caused me some issues but never with saving. I was checking if the field was "" and then doing something else. Once I realised that "" was never going to happen, I adapted my validation accordingly.
I just check that on a recent project using TinyMCE editor, but it indeed send "" for an empty input, and during the implementation we had no issues with that.
alt text http://diarioplus.com/files/pictures/tiny.PNG
The body property is the one with a tinyMCE editor on the client side.
I really think it will be something with the modelBinder or the way you set the values back to the model.

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