Does anyone know of a link to a site that has a tutorial/code on good way to paginate information coming from a database? (without page refresh) I have spent the better part of the day looking for a site that has what I need. Most are dealing with static/fixed data in the forms of lists etc.
I need one that has something like this for my tables:
Data Data Data Data
Data Data Data Data
Records 1 to 8 of 27 First Previous Next Last
We just implemented a few things using this plugin for JQuery:
Datatables.net
It works on basic html tables and has support for AJAX. Basically you would just write a PHP page that returns a partial result from your database in JSON, etc. The plugin will handle making the AJAX call and displaying the data.
This is only a very partial answer (sorry, not much time atm) but look for the 'LIMIT' command in mysql. It lets you pull back only a certain set of records, say records 11-20. I use that when I do pagination.
Again, this isn't complete, but hopefully it'll help!
I've worked with this one quite a bit. jQgrid... seems to be pretty well maintained.
http://www.trirand.com/blog/
Related
I'm currently creating a web-based system that would have a millions of data after some years (3 years = 1 million record, just guessing).
Now I have a webpage where I display all records in a html table dynamically.
If the time comes can it display these amount of data?
What are the things I need to consider?
What about hardware requirements (for the server probably)?
The set up would be a LAN set up to be use by 7 users simultaneously.
Any help would be appreciated.
Here is a my php code:
my php code
and this is the result:
Result
I guess your browser will crash if you display this inside of a table or list.
The only way i see is to lazy load and keep the DOM as small as possible while scrolling through.
Why do you want to display one million records?
Possible but browser will possibly crash.
Best approach is to have a pagination that will display like, 100 per page maybe, and have a search function.
it's not a human readable ,
you can get all data from the database is possible and saved it in an array
then make search in array and get the result what you want
I am using 1 million cells (not rows) in a plain HTML table.
It takes some time do download the data and some more to render it. But if you really need it you can display it. I don't see a production use case. I only display it to spot inconsistent data. So, not going to prod.
There are multiple component libraries to handle continuous scroll.
I have a table which dynamically reloads continually every 60 seconds. This keeps the data up to date.
I am using the script from here - http://www.michaelfretz.com/2010/04/21/using-ajax-to-load-data-from-php-into-your-website/
On the pages that have about 15 records, the Twitter Bootstrap tooltips work fine, they are speedy and look great.
On another page however I have over 400 records. Each record has a hover tooltip which shows the information from the database about that record. The information has already been outputted to the title tag but when hovering it takes more than a second before it appears which makes the whole page seem sluggish.
I'm thinking the reason for this is due to using the 'Rel' tag and twitter javascript which is live(Continually updating) , and therefore slows it down. But I'm not sure.
Is there any way to fix this..... or am I better to try and make a paginated table which loads the next page each time I click Next?
400 records is a lot to expect someone to traverse within a 60 second period. Without actually seeing any actual html, it's a bit hard to make suggestions but here are three:
Use the title attribute instead - see about the Title attribute. This will mean that you are using inbuilt browser code rather than Bootstrap rendering for tooltips.
Show a subject/content snippet for each row rather than just subject i.e. place the initial part of the content in available space after the actual subject. Most people have large monitors these days and with a responsive design you can show a lot of content after the subject.
As you say, use pagination. Bootstrap provides one but it requires you to do the wiring.
400 Records! Too much!
This is something seriously to do with the browser and system's performance. Displaying 400 records with live() is kinda crazy. The browser will crash for sure. Instead you can do one thing. Use pagination and display only a small sub set. Also, the users will find it difficult to navigate and search.
One another way is to use datatables. Load the full content in table and don't worry about anything. Datatables will take care of the rest. Pagination and Search are good features in this.
Screenshot of Datatables:
(source: webresourcesdepot.com)
If you see this, everything from Searching, Sorting, giving tooltips are done in the client side, with minimal set of data. So the payload on the browser will be less and the users see the part, which they just require.
Let me start off by saying that this is my first time working with PHP, HTML, JavaScript, and JQuery, so my experience is fairly lacking.
I am helping to build a Web Order Processor, which will display orders, dates, customers, and status. I am pulling orders from our database, and displaying them in a table. the Order Processor is being built in PHP.
Now, I've been asked to separate the table into different tabs, which will be labeled after the possible order statuses we have. Sort of like the tabs at the top of a browser.
My problem is quite a big one: I don't know where to start. I've been searching for a couple hours but I don't think I'm using the correct terminology.
Thank you all in advance. Any help would be appreciated, even if it's just pushing me in the right direction by giving me a couple things to search for.
I would suggest start with this: http://jqueryui.com/demos/tabs/
First make sure your tabs are working with the simple static content
Second upgrade it so every time tab switched, it loads content from the database.
Depending on a tab you can customize request to the server with the status=(NEW,PROCESSES,REFUND ...), and do the query and return a proper data for the tab.
Hope it helps
Just a quick question. If I use a Pagination for my website and am expecting a lot of results, is it better to use jQuery or just a basic PHP/MySQL one that just loads a new page?
If I use jQuery and I have over 300 results from the database, will it have to load it all at once on the initial page load? That might take a long time to load. Or can you make it load only the first 10, and then when you go to Page 2 it will load the next 10?
Just wondering if you have any suggestions for my situation, and if you recommend any good scripts I can use for it.
Thanks!
IMO, start with "basic" PHP/MySQL pagination (load a new page each time the user changes pages).
Once you've got that working, if you want it, then add in jQuery pagination on top. All the jQuery pagination would do is load the new page of results via AJAX, rather than loading an entire new page.
So, the key here is how you handle paginating results via javascript (jQuery). If you render all 300 results on the page and simply hide results 200-300 (and reveal them via javascript), your page will still be really slow to render initially, and you'll be taxing the database with a query that could be optimized via a limit (pagination).
On the other hand, if you asynchronously query for more results via say, an asynchronous GET request to a web-service that spits the data out via JSON, you can both have a responsive page and avoid a taxing, limitless query.
Using PHP / MySQL and post-backs to handle the issue also prevents the long-initial page load + taxing query.
So, in summary, I'd absolutely paginate your results. I would also suggest you do the following:
1) First architect things using purely PHP / MySQL. So, for instance:
/results/?start=0&limit=20 (Show results 0-19)
/results/?start=20&limit=40 (Show results 20-40)
2) Then if you want to provide a responsive, javascript mechanism for loading more, extend your page so that it can spit out JSON with a format parameter:
/results/?start=0&limit=20&format=JSON
So if format=JSON instead of rendering the HTML, it'll just spit out the JSON data, paginated.
3) Then wire up the javascript to use the JSON data to dynamically load in more content:
$.get('/results/?start=' + start + '&format=JSON', function(data) {
// Process and display data
});
Hopefully that makes sense!
You've tagged your question with ajax, that's the answer... You should use a combo of PHP/MySQL + Ajax to make the things faster and smoother.
Here is a very popular plugin which implement the client interface: JQGrid
I have a php code that fetches data from mysql. The data has (say) 15 rows. I want to display only 5 rows at a time to the user, with links to each of the set (3 in this case) such that when a user clicks on either of the links, the same page will show the corresponding results. Since, php code has the final result set, I don't want a solution that involves me to navigate to other pages and possibly re-calculate the next set of solutions (5~10 or 10~15). How can I do this? Thanks in advance.
If I am using javascript or ajax, how can I achieve this? I don't know javascript much.
You can try loading everything in your page and simulating the pagination thanks to javascript.
An example in jQuery here
It sounds like you want to send the Data as a complete set to the client but not let him display everything to the user. So use Javascript to just show you the pages 1*page_number to 5*page_number (with a for-loop).
By far, the easiest solution in this situation is a Dom-based Grid system. I recommend checking out Datatables. In essence, the Datatables code will take a fully-formatted html table and reformat it to include only the amount of rows you tell it to, with paging on the bottom as you've requested. In addition, you can turn on such features as filtering, toggle-able length, sorting, and selection. Once you get the hang of it, the additional code takes no more than a minute per table and the features are outstanding.
This is really straightforward. Use PHP to output ALL of the table, with all the rows. The only gotcha here is to include the full html, including <thead> and <tbody> Give the table an id such as "example"
Now, include the files that you download from the datatables site--datatables.js and Jquery.js. Instantiate the jquery like this:
$(document).ready(function() {
$('#example').dataTable();
} );
That's it. As you can see from the examples, it's a really cool tool. Good luck.