Coding standards
Security in ResourceSpace
Developer reference
Database
Action functions
Admin functions
Ajax functions
Annotation functions
API functions
Collections functions
Comment functions
Config functions
CSV export functions
Dash functions
Debug functions
Encryption functions
Facial recognition functions
File functions
General functions
Language functions
Log functions
Login functions
Message functions
Migration functions
Node functions
PDF functions
Plugin functions
Render functions
Reporting functions
Request functions
Research functions
Slideshow functions
Theme permission functions
User functions
Video functions
Database functions
Metadata functions
Resource functions
Search functions
Map functions
Job functions
Tab functions
Test functions

user_rating_save()

Description

Saves a user rating for a given resource.

Parameters

ColumnTypeDefaultDescription
$userref int The reference ID of the user rating the resource.
$ref int The reference ID of the resource being rated.
$rating int The rating value to be saved (0 to remove rating).

Return

void

Location

include/resource_functions.php lines 5255 to 5322

Definition

 
function user_rating_save($userref,$ref,$rating)
    {
    # Save a user rating for a given resource
    $resource=get_resource_data($ref);

    # Recalculate the averate rating
    $total=$resource["user_rating_total"]; if ($total=="") {$total=0;}
    $count=$resource["user_rating_count"]; if ($count=="") {$count=0;}

    # modify behavior to allow only one current rating per user (which can be re-edited)
    global $user_rating_only_once;
    if ($user_rating_only_once)
        {
        $ratings=ps_query("select user,rating from user_rating where ref=?",array("i",$ref));

        #Calculate ratings total and get current rating for user if available
        $total=0;
        $current="";
        for ($n=0;$n<count($ratings);$n++){
            $total+=$ratings[$n]['rating'];

            if ($ratings[$n]['user']==$userref){
                $current=$ratings[$n]['rating'];
                }
            }
        # Calculate Count
        $count=count($ratings);

        # if user has a current rating, subtract the old rating and add the new one.
        if ($current!=""){
            $total=$total-$current+$rating;
            if ($rating == 0) {  //rating remove feature
                ps_query("delete from user_rating where user=? and ref=?",array("i",$userref,"i",$ref));
                $count--;
            } else {
                ps_query("update user_rating set rating=? where user=? and ref=?",array("i",$rating,"i",$userref,"i",$ref));
            }
        }

        # if user does not have a current rating, add it
        else
            {
            if ($rating != 0)
                { // rating remove feature
                $total=$total+$rating;
                $count++;
                ps_query("insert into user_rating (user,ref,rating) values (?,?,?)",array("i",$userref,"i",$ref,"i",$rating));
                }
            }
        }
    else
        {
        # If not using $user_rating_only_once, Increment the total and count
        $total+=$rating;
        $count++;
        }

    if ($count==0){
        # avoid division by zero
        $average=$total;
    } else {
    # work out a new average.
    $average=ceil($total/$count);
    }

    # Save to the database
    ps_query("UPDATE resource SET user_rating = ?, user_rating_total = ?, user_rating_count = ? WHERE ref = ?", array("d", $average, "i", $total, "i", $count, "i", $ref));
    }

This article was last updated 4th December 2024 08:35 Europe/London time based on the source file dated 28th November 2024 12:10 Europe/London time.