I've got a page that creates a ticket in our help desk system. It acts as a wizard with the following steps:
Step 1
User selects the customer from a dropdown list. There is a jquery onchange event that fires and generates the list for step 2 and hides the step1 div and shows the step2 div.
Step 2
User selects the location from a dropdown list. This is generated based on the customer selected in step 1. There is a jquery onchange event that fires and generates the list for step 3 and hides the step2 div and shows the step3 div.
Step 3
User selects the type from a dropdown list and enters text into 3 different text boxes. If the user fails to enter text or enters invalid text my controller changes the model state to invalid and returns the view.
How can I get all the dropdowns to repopulate again with the correct selection the user chose and get the page to redisplay on Step 3?
My first thought was to use ajax and when the user clicks the Create button, I could create the ticket from there and if successful send them to the ticket detail. If unsuccessful, well just display an error message and i'm still on the page so no big deal. Now that I write it out I think this is best. Are there any major issues using ajax? It seems most sites use some type of javascript or ajax these days.
Second thought is to not use ajax at all and submit all the pages to the server.
What do you suggest?
The 3 steps display completely different markup.
There is possibly not much you can gain by an AJAX-version, except the avoided page flicker when you change the steps.
If you go the non-AJAX way you gain:
nice bookmarkable links ( www.ticketsystem.com/Customer -> www.ticketsystem.com/Customer/Microsoft/ -> www.ticketsystem.com/Customer/Microsoft/Location -> www.ticketsystem.com/Customer/Microsoft/Location/Redmond )
browser history works
easier testing
To redisplay the lists after step 3 you would load all of them and set the selected item according to the parameter in the URL.
I agree with you. Use AJAX to submit the ticket.
Related
I'm improving RoR application. In this app there is a page where user can crete or edit items. This page contains form. In that form there are 11 tabs (implemented with javascript, we use bootsrap's tabbable here). Form controls are divided between 11 tabs.
There is a problem: After user submits form with wrong data in 2nd or 3rd tab, the same form is shown, and first tab is activated.
I need to solve this problem. I want not to use client side validation. All validation should be done in rails. Also I don't want to use AJAX.
So if user submits form that have wrong data in 5th tab, then 5th tab must be shown after submit, and form error messages should be placed into 5th tab. How can I do that?
I think the problem is a Javascript one - how to load up validation errors in the correct tabs?
From my perspective, it seems Rails is handling the data you send, and returns the original page your request was sent from. The problem is this does not load the correct tabs, which is JS' responsibility (front-end)
Recommendation
I would personally create an anonymous function to load up the tabs which have errors. You need to remember tabs are all HTML elements, and Rails append field_with_error wrapper around fields with errors
I don't have any experience with Bootstrap tabs, but you could do something like this:
#app/assets/javascripts/application.js
$(function() {
$('#myTab .div_with_errors:first').tab('show')
});
MVS 2010 MVC 3:
I have a Submit page that has severial checkboxes that are been built dynamically as soon as the page load. The user can check one or more checkbox before submitting the form. On the right hand side of the page, there is somewhat a summary of all the previous selections that the user chose. The summary is available from the Submit page and will carry to the other pages. There is an "Add Comment" button at the very top of the page. When the user click it, a popup window with a textbox will display allowing the user to type a comment. How do I display this comment on the page without having a refresh the page?
The main reason for not wanting to do a refresh is because the user could have selected one or more checkboxes, they will lose their states as soon as the page is refreshed.
I tried parent.document.getElementById('DivCommentResult').html(data); - It displayed this message "Microsoft JScript runtime error: Unable to get value of the property 'html': object is null or undefined"
If I understand well, you have to bind the change of your check box to a function that submit a synchone ajax request that obtain the summary you need and replace target content with the result data of your request.
Is it what you want ?
I had to get the parent doucment and retrieve the div id from it.
Once I have it in hand, I set its innerHTML text to the data that I want to display.
var parentDocument = parent.document;
var el = parentDocument.getElementById('commentResult');
Once I have this, I simpley call el.innerHTML = data;
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);
I am looking for the best way to create ajax enabled subforms from items in a list with MVC 3. A static list of values should be generated, but with an "edit" link/button next to every item, to toggle inline edits.
I did follow the tutorial at this link
http://blog.janjonas.net/2011-07-24/asp_net-mvc_3-ajax-form-jquery-validate-supporting-unobtrusive-client-side-validation-and-server-side-validation [1]
However it is based on the form edit fields always being visible
I'd like to show a static list with field values, but let the user activate an edit field by clicking "edit" (e.g. button)
I did modify the example at [1] by creating a default partial view with a form with submit button only. When posting the data by ajax the edit form will show. It looks like it is working, (I only need to hide validation errors on the first POST - which does not send real data).
Update:
An even better solution would probably be to leave out all forms in the static view, just have a single css class button/link next to each item, and let jquery fetch the relevant view for the clicked item. I am not sure how to do that with MVC 3+jQuery though.
Another update:
I discovered Ajax.Actionlink, which did exactly what I wanted!
I found out how to do it, and it turned out to be real simple!
I created two partial views.
One for rendering each static item. I used used Ajax.ActionLink with InsertionMode "replace", and set the parent of the item as the target
The second for rendering the form. Here I used Ajax.Beginform with similar options.
On successfully saved data, I returned the static view, on failure, I returned the partial view with the ajax form again.
I'm happy I found a MVC-centric way to do it (although it is fun creating custom stuff with jQuery)
It sounds like you need an inline editing plugin for jQuery. I would try jEditable. I have not used it myself but appears to have extensive docs.
this entry might help: code + video + explanation ;)
http://ricardocovo.wordpress.com/2011/04/03/asp-mvc3-editing-records-with-jqueryui-dialogs-and-ajaxforms/
-covo
Questions on Rails 3.0.7, and JQuery 1.5.1
Overview
I'm trying to do the following thing. I have a web page with a form on one side that lets me create a category, and a list of items on the other side, with a checkbox for each item. I would like to be able to check the check box, for each item, so that when I submit the form to create the category, the newly created category also creates a has_many through association with each item.
So the association part works almost, I can submit a list of checked checkboxes, and Rails creates the association on the backend if I send the list of checked items.
Problem:
Here's what doesn't work:
I am trying to submit the form via Ajax, so I wanted to bind an event handle to the rails.js 'ajax:beforeSend' event, so that it would scan through my list of checked checkboxes and at the checked ids to a hidden form field.
The problem is: I try to get a list of all the checked boxes, and add them to the hidden field when the user clicks the Submit button. Therefore, I figured I'd place the code to do so in the ajax:beforeSend event handler. What I "THINK" I'm noticing however, is that rails.js has somehow already processed the form fields, and constructed the HTTP query before this handler fires. I notice this through the following behavior:
Observed Behavior
1) I can reload a fresh page, click the button to submit the form, the alert boxes from my handler pop up saying that no boxes are checked, and the created category in my db has no associated items (CORRECT BEHAVIOR)
2) I then click 1 checkbox, the alert boxes pop up showing which boxes are checked (CORRECT). But then when I submit thee form, the category in the DB still has no associate items. And I can see through firebug and the server logs that and HTTP query was sent containing the old parameter list, not the newer one. (WRONG)
3) I then submit the same form again, changing nothing, and it shows me the correct number of items.
So I get the impression that the parameter construction is lagging. I hope this wasn't too long, an someone can help me figure out what is going on.
My Question:
What event do I need to bind to, so that the form gets submitted with the correct parameters? Or is there another way to go about it completely?
Thanks
Here's my code below.
Thanks,
$('#my_form')
/* Now we need to configure the checkboxes to create an association between
* the items, and the interaction that is being created. First we will bind a
* function to the click event, and if the box is then checked, we will add
* the item id to the list of interaction items. If it is unchecked, we will
* remove the item from the list of interaction items.
*/
.live('ajax:beforeSend', function(event){
// First get a list of all the checked Items
var checked_items = new Array();
$('#items input[type="checkbox"]:checked').each(function(){
checked_items.push(this.getAttribute('data-item-id'));
});
// Then add this list of items to the new_interaction form to be submitted
$('#interaction_new_items').val(checked_items);
alert(checked_items);
alert($('#interaction_new_items').val());
})
Bind to the click event on the submit button itself. The click event will be processed before your ajax beforeSend event.
$('#my_form .submit').click(function() {
// rest of your code here
});
A more flexible solution (say, in case you wanted to submit the form with something other than a click) would be to bind to the form's submit event.
$('#my_form').submit(function() {
// Tweak your form data here
})