saving web page settings configuration - javascript

so i building web apps based on almsaeedstudio adminlte template (it is awesome by the way), and i like the way the sidebar collapse into mini sidebar but when i refreshed the page to navigate to other page the sidebar won't stay collapse and i still want a full size sidebar
so i thinking there must be a way to make my site remember what state it is, so it maybe like saving something to browser or database and then i just check it in my html tags with css class.
well the first thing that come to my mind is saving to database to my user table, but doing so mean i need to do some post/get process that won't work seamlessly or maybe there is a way to do that? since it just a simple toggle to change full sidebar and mini sidebar so maybe a light operation that won't affect performance....
by the way i am using laravel (maybe there is laravel-ish way? lol)

if you want to keep this setting, you will have to save it on the database side.
and since it just a small flag it wont take that much to be updated on the database.
you can always save the value in the session/cookie and just get the data when he login to the system

I would suggest saving the current state in the localStorage or in the cookie.

Related

Working with multiple views using HTML and jQuery

I have two tabs user and admin that render their own tables with separate sets of data. The tables have checkboxes on both tab views. How do I maintain the state of the data and the checkboxes in each view while I am constantly switching between them.
Also, I have noticed that I have a lot of duplicate HTML and JS code since the IDs of the HTML elements have to be unique in both tabs while they are very similar in appearance on both views (needs to be).
So far I have tried HTML5's LocalStorage to save the state of each tab contents but its not really getting me anywhere. Is JQuery's .clone() good enough to maintain what I want?
***Note: I am expecting some suggestions based on industry practices since I think this would be a very common problem.***
What would be an efficient solution for tabbed layout using HTML and JS?
if you are using a single page application you can simply save the state in a simple js object (model).
if its on different web pages local storage or session storage would give you the solution. what is not working for you with LocalStorage? its an adequate solution, especially if you want the state to be saved after you close and reopen the browser

Allowing user to rearrange entries in Django admin site and how to store that new custom order to survive page refresh?

I have HTML and JavaScript in place that allows a user to move Django database entries (displayed in a table) up and down. However, is there a way that I can store this new order that the user has customized so that it will show up any time the user navigates back to that specific page view? I think get_queryset is what is causing the page (after refreshing) to switch back to the basic filtering. But, I have no good ideas on how to override it or avoid it to accomplish this task. Any help would be much appreciated!
I would suggest using ready solutions: django-admin-sortable or django-admin-sortable2. As for me, I have successfully used second solution and it works. One important note about it is to run ./manage.py reorder my_app.models.MyModel after adding new order field as mentioned here.

Tell when a user is going back in browser history

I have a page A that displays some text from my database. The text is editable and gets autosaved using AJAX. If the user would go away from that page, and then go back to page A using browsers history functionality, the page would not have the latest data (since we went back in history). And the user would edit the old data, which would overwrite the latest data on the server when it gets autosaved.
I assume this is purely a front-end issue, where my server can do nothing about this. What solutions could be aplied? If it was possible do detect with javascript that the user went back in history, then I could simply display a text saying that the user has to refresh the page. But is that even possible? Or are there any better solutions?
There are lots of options and strategies for a situation like this.
The first thing you can do is to try to disable caching on the page. You can use meta tags to do this.
You can also keep track of when the user presses the back button using libraries such as this one. You can respond either on the server or on the client, although you want to be careful because a disabled back button can annoy users.
Should you ever happen to consider using a javascript framework such as AngularJS you can probably keep track of the back button using the framework.
Finally you can solve issues like this with careful page design. If the data on a page can change you might load the current data via ajax before the user has a chance to edit it. By doing this - your "load" code will run even if the user does use the back button. Take a look at this stack for more information on that!
Hope these suggestions help a bit!
If you are using Jquery then use/
$(document).on('pageshow', '#Content' ,function()
in place of
$(document).ready(function()
It will solve your problem, the javascript file that is back end will be loaded when that particular page loads

Save the state of page. Cookie or session?

I have a little web app (which only has 1 page) that allows user to input and select some options. The input texts and selections will be displayed in another div in the form of table. You may want to refer to the example here: http://jsfiddle.net/xaKXM/5/
In this fiddle, you can type anything and after you clicked submit it will get the text input and append them to another table #configtableTable
$('#labels #labelTable tr:last').after(addmore);
$('#configtable #configtableTable tr:last').after(displaymore);
I'm using cherrypy as a mini web server (and thus major codes are written in python) and i know that it has session here but i have no idea how to use it at all as the example given is not really what i want to see.
FYI, i'm not using PHP at all and everything is in a single page. i simply show and hide them. But I want the page to remain as showing #configtableTable and hiding #labelTable even after refresh. Note that the fiddle is just part of the web app which will only show all these after getting a reply from another device.
Not sure about cookie because all the links i've found seem broken. How about jQuery session? Is it applicable in my case? I need some examples of application though :(
okay, to conclude my questions:
1. can i save the page state after refresh? and how? which of the methods mention above is worth trying? is there any examples for me to refer? or any other suggestions?
2. can i simply DISABLE refresh or back after reaching a page?
Thanks everyone in advance :)
Don't disable Refresh and / or back navigation. It's a terrible idea - user's have a certain expectation of what actions those buttons will perform and modifying that leads to a bad user experience.
As for saving state, while you could use session or cookies, if you don't need that data server side, you can save the state on client side as well.
For example, you could use localStorage
Alternatively, you could create an object out of the data in the table, JSON.stringify() it and append it to the url like this: example.com#stateData.
In case of either option, at page load, you'd have to check if there is state data. if you find there is, then use it to recreate the table, instead of displaying the form.
The disadvantage of the first, is that not all browsers support localStorage.
The disadvantage of the second is that URLs have a length limit and so this solution won't necessarily work for you if you're expecting large amounts of data.
EDIT
It appears that Midori does support most HTML5 features including localStorage however, it's turned off by default.. (I'm trying to find a better reference). If you can, just point Midori to html5test to see what HTML5 features it supports.

Use jQuery to append star to menu item if the linked page's content has changed since last visit

I would like to create a similar effect to Apple's Safari 4 Beta Top Sites page -
when when you view it and a page's content has changed since you last visited, it displays a blue star in the top right hand corner to notify you.
I would like to do the very same, but only within my website and instead of an image I would like to append a '*' or some other character to the menu item's link.
I'm sure you would use the jQuery Cookie Plugin, but my scripting is not that advanced and I do not know how to dynamically change the cookie's content. Have I explained properly? How would I do it?
Many thanks in advance
Server side:
Read the website f.ex every minute and save the timestamp if changed content.
Save the users' visit timestamp to the page
Ajax:
Check if the websites update timestamp is newer than your visitors' timestamp, if yes make the star class visible, when the user clicks on the link, make the star disappear and update the users timestamp.
--
Showing a star or an image or whatever with Jquery is not the big deal here, it's a oneliner, the complex problem is to detect website changes, because minor changes can occur, but the main content could not change. The easiest way to do this would be if the website provides rss, then there's probable that the important new content will be published via rss.
You're asking a very vague question. Have you even attempted this? Please try it first then ask for help along the way.
Also, this is not something you necessarily need jQuery for. You could do it completely on the backend. But it's hard to say which solution is best for you without know anymore details.
I guess I would recommend using php and storing the cached page into a db (in other words the user would have a "fav pages" account) then when the user visits the "fav pages" webpage, you would fetch all the users favorite pages and compare it to what has been stored in the db. But for certain pages (for example if they have a date/time string), it would be very difficult to tell if the change was something the user wants to know about. Probably you would need to create a complex algorithm to decide what change is good change and what change is just certain website features.

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