Ok, I am working on extending a legacy Coldfusion MX 7 application. I'm new to the project and have been charged with implementing a new feature which I have done however during code review it was recommended that I alter the method which I used to close the child page and refresh the parent page to reflect a newly created data point.
The popup has a CFFORM on it with some buttons. When the popup opens I capture a reference to the parent page with javascript in a variable we can call "opener". When the form posts I capture the data, insert it into the database, call refresh on "opener". This causes the new data item to show up in the parent page's grid.
Research indicates that if I was using Coldfusion 8 I could possibly use the CFWINDOW tag to work this magic.
I have no formal training when it comes to web applications in general so perhaps I am doing something taboo with my approach. How would you solve this particular problem?
EDIT:
I was thinking this over some and came to the conclusion that if I could capture the submit event, post the form data, and get feedback on if it was a success I could then trigger the parent page refresh. Is there a form property that I could bind javascript to for this sort of thing? Maybe some jquery AJAX combination of things that would allow me to submit the form, wait for the status, then refresh the parent and close the popup?
Related
So I've run into a small design problem.
I have a partial where you can fill in some form information, and a second partial where you can select some additional items. I store the details of the first partial in localstorage so that it can be filled back in when the user returns from the second partial (it makes sense, don't worry).
However, I want to delete the localStorage when the user leaves to any other part of the website, but there are about a dozen ways to do that. I would like to handle this with a partialClose event, but I can't seem to get it to work (I'm new at web development so forgive me if this is a stupid question).
What is the proper way of handling a partial close/switch event with both AngularJS and Jquery?
The event for a partial changing is $locationChangeStart
Are there any clever ways of resetting a page back to it's original state (basically a reload) without having the screen physically look like it resets.
Basically i have a bunch of ajax requests, variables and content that i want wiped when a user clicks 'new' (currently i'm using just using location.reload(); ) but want a more graceful way of doing it.
I'm really wanting to refresh it without the screen going white for a split second and also want to retain a single modal popup i have which is open when the user clicks 'new'.
So the user clicks the 'new' button, a popup appears taking a parameter, the site refreshes and the parameter is passed to an Ajax request kicking off the start process.
If anyone could point me in the direction of what to even look for it'd be much appreciated.
"Are there any clever ways of resetting a page back to it's original state (basically a reload) without having the screen physically look like it resets."
You can't refresh the website without making it look like it refreshed, the browser needs time to display the content.
You can, however, use jQuery .load to load some standard markup into your site to make it appear as it did when it was initialized, the browser won't refresh, just like making an AJAX call doesn't require the website to refresh.
I'm, however, unable to see why you want the website to refresh if only to make an AJAX call.
The simple answer is to have the content you want to reload inside a container i.e.:
<div id="container"> page content </div>
Then when you have successfully got new data from the ajax call you can empty the container with:
$("#container").empty();
and repopulate it with
$("#container").append(newcontent);
You can use jQuery's .load to request and replace a portion of your page, e.g. a container element.
For example, calling the following on index.html would effectively "reset" the #container element:
$("#container").load("index.html #container");
See "Loading Page Fragments" on the docs for $.load.
As for resetting variables and cancelling any pending ajax requests - you could perhaps write a reset() function to do all that for you.
Another possibility would be to put data in local storage, or in the url after a # before the reload. But your options for having it look like it isn't refreshing are pretty limited outside of jQuery .load or an XHR request (which is what the jQuery load does)
I'm very new with JavaScript and I'm struggling to implement something which I don't think should be very complicated.
What I want to do is:
form is open in browser with a drop-down list of records in a database
if the desired option is not in the list, the user can click on a link next to it to add a new entry to the database
this will open a new window with an additional form for this entry
on clicking submit the processing script will run to insert this information into the database
when the processing script has completed, the window will close and the drop-down list will refresh so that it includes the new option (but without losing any other information in the form)
Maybe that last thing with the list refreshing is quite complicated (unless the list only in fact loads from the db on click?) but everything else should be simple enough, I think. I've tried all sorts of things but nothing that's got close enough to working to be worth posting here.
Could someone please give me some sort of idea of the sort of functions I should be using and roughly how to implement them? I don't necessarily need precise code, just a framework to work from. (I'll learn more in that case anyway.)
ETA: I should add that I've been trying to work with window.open() and window.close(). I don't even really know if this is the best method?
No, that's not(at least relatively) complicated. What you'll need is jQuery and jQuery UI(these frameworks are just suggestions, you may chose any other if you like) to achieve that. So...
form is open in browser with a drop-down list of records in a database
This part is easy, just a simple html form with a select tag and a add link/button on it. You will need a JavaScript function to refresh the select options from database. For that I suggest this or this -there are many others on the web- post.
if the desired option is not in the list, the user can click on a link
next to it to add a new entry to the database
this will open a new window with an additional form for this entry
The easy way to do this is using jQuery UI Dialog Widget to open the popup with the new form.
on clicking submit the processing script will run to insert this information into the database
On that form you'll have to use jQuery Ajax to send data to database through your server language(PHP, ASP.Net, JSP, whatever...). Some examples here and here.
when the processing script has completed, the window will close and the drop-down list will refresh so that it includes the new option (but without losing any other information in the form)
So when data processing was complete, you call the refresh select function that you created before and close the dialog on the ajax success callback. Example here.
And this is it. Now it's up to you. Hope it helps.
If I use ajax to change specific portions of the page, like a content section, which warrants a new URL (and requires one specifically for favoriting, or refreshing), is there some magic that I am not aware of that allows the user to click the back button and reload the content that was just there?
Or do you have to re-retrieve the data based on stored variables using popstate
Thanks!
I am developing my website using jQuery. For the Private Messaging feature, what I had right now is showing a ModalBox (dialog box). So, whenever user wanna check message, they will be displayed with a dialog box with the inbox shown. Now, inside that ModalBox, I have a "Compose" section where users can send message. My question is, when user submits the form, how we could retrieve those inputs without having to actually submit it? Because, I have tried it..., that when I do the submit(), it closed the ModalBox.
Any help would be appreciated.
Since you're using jQuery, see here
In case you're not familiar with AJAX, basically it allows you to send a request to the server (in this case, your submitted data), process the data on the server, and then receive any return back from your request, all without reloading the entire page.
This should alleviate the issue of the modal box closing (the page reloading upon submit, really.)
[edit]
See this article from here at StackOverflow on using the live event handler. This should take care of the issue of not getting the value from newly created DOM elements.
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