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Rating thingie ...

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Rating thingie ..., Just need a little guidence / pointer where to start.

hallizh	5 Jun, 2008 - 03:32 PM Post #1
New D.I.C Head Joined: 9 Mar, 2008 Posts: 37 My Contributions	Hey there, Im making a webpage with things(not really want to give up the purpose of the website just yet) that users should be able to rate with a Yes or a No, kinda like the youtube comments. When you click 'yes' the rating goes up by 1, when you click 'no' the rating goes down by one. When the number is negative its red but green when positive. If the number goes below some number(perhaps -10) it wont show anymore unless you click "Show". The problem im having is that when a user clicks 'yes' for example, i want the number updated immediatly and make it so that he wont be able to vote again. I probably wont have a user system. I dont need to fetch all the information from the database again do I? Thanks for all the help, appreciate it now as always.
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JBrace1990	5 Jun, 2008 - 04:00 PM Post #2
D.I.C Regular Joined: 9 Mar, 2008 Posts: 474 Thanked 21 times Dream Kudos: 350 My Contributions	Dream.in.code has a policy in which they request some part of a code in order for us to help you. Anyway, onto business =P no, you don't need to fetch the info... just add 1 or subtract one, then display it... everything before that can be accomplished with if statements.... to make them NOT vote again, there's a few ways to do it.... 1. log their IP, put it into the database, and check for that IP everytime someone votes 2. use cookies/sessions to check that they've already voted
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hallizh	5 Jun, 2008 - 04:18 PM Post #3
New D.I.C Head Joined: 9 Mar, 2008 Posts: 37 My Contributions	Yeah but, the data is displayed, then you vote. And then i want the updated number to be shown. IE. This is something amazing!! : 13 This is something mediaocre: 0 This is something awfull ... ! : -19 This is shown. When you click a thumb, then you vote en then i want the number to increase, just as he clicks. Hope you understand me. New to php as you can see EDIT: Removed a code line, had an error but fixed it myself. This post has been edited by hallizh: 5 Jun, 2008 - 04:27 PM
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capty99	5 Jun, 2008 - 04:44 PM Post #4
the real kya Joined: 26 Apr, 2001 Posts: 9,137 Thanked 15 times Dream Kudos: 550 My Contributions	I'm sure you need some javascript. The php is simple enough, you just pull a ranking from the db (13 for this example) then when they click it send the db that original variable + 1 (so 14) and then use js to change the number displayed.
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hallizh	5 Jun, 2008 - 04:48 PM Post #5
New D.I.C Head Joined: 9 Mar, 2008 Posts: 37 My Contributions	Okay will do. Thanks alot.
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JBrace1990	5 Jun, 2008 - 06:08 PM Post #6
D.I.C Regular Joined: 9 Mar, 2008 Posts: 474 Thanked 21 times Dream Kudos: 350 My Contributions	yup, what capty said.... you'd have to add an onclick element to the thumbs up/down, and create a function in JS to add or subtract one.... I would (however), NOT use JS to put it into the database, as someone could change the value to add or subtract more then it is supposed to.... with PHP, it's more secure, as it can't be changed...
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akozlik	6 Jun, 2008 - 08:43 AM Post #7
D.I.C Addict Joined: 25 Feb, 2008 Posts: 596 Thanked 22 times Dream Kudos: 750 My Contributions	You might be able to write an AJAX script that solves both your problems. It could post back to the database, write the new value, and then display the new value, all without reloading the page. Read some AJAX tutorials if that sounds ideal.
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hallizh	10 Sep, 2008 - 06:08 PM Post #8
New D.I.C Head Joined: 9 Mar, 2008 Posts: 37 My Contributions	Thank you guys, helpfull as always
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