CODEWITHSUNDEEP
phpwordpresswoocommercecategoriescustom-taxonomy
Mostafa AHmadi
Mostafa AHmadi

Reputation: 335

Limit the number of taxonomy terms diplayed

I have 2 taxonomy sets product_cat and tvshows_cat. There are 12 terms for each set.

A product can have, up to 12 terms (but never from the 2 sets at the same time).

I use this code to show the term list in the product page:

$cats = get_the_term_list($post->ID, 'product_cat', '', '  ', ''); 
$tvcats = get_the_term_list($post->ID, 'tvshows_cat', '', '  ', ''); 

if (!empty($cats)){
    echo strip_tags($cats, '   ');
}elseif(!empty($tvcats)){
    echo strip_tags($tvcats, '    ');
}

The result is:

Action, Drama, Adventure, Biography, Animation

The problem is that, in some cases, there is not enough space to show all terms.

I need to limit number of terms to 2 terms.

Question:

How can I limit the number of terms applied to two?

Thanks

Upvotes: 3

Views: 2376

Answers (3)

LoicTheAztec
LoicTheAztec

Reputation: 253921

Instead using get_the_term_list() function, you should use get_the_terms() which will give you directly an array of terms objects (as get_the_term_list() is using get_the_terms() herself if you look to the source code of the function).

Then that you can build a custom function to get what you want (I will not use implode() function or any other one php function as we want only 2 terms.)

Note: You don't need strip_tags() function here

So your code will be:

// This function goes first
function get_my_terms( $post_id, $taxonomy ){
    $cats = get_the_terms( $post_id, $taxonomy );

    foreach($cats as $cat) $cats_arr[] = $cat->name;

    if ( count($cats_arr) > 1) $cats_str = $cats_arr[0] . ', ' . $cats_arr[1]; // return first 2 terms
    elseif ( count($cats_arr) == 1) $cats_str = $cats_arr[0]; // return one term
    else $cats_str = '';

    return $cats_str;
}

This code goes in function.php file of your active child theme (or theme) or any plugin files…

Then below is your code:

$cats = get_my_terms( $post->ID, 'product_cat' ); 
$tvcats = get_my_terms( $post->ID, 'tvshows_cat' ); 

// Displaying 2 categories terms max
echo $cats . $tvcats;

This code goes on your php templates file

— update — (related to author comment)

Or without function, your code will be:

// Product categories
$cats = get_the_terms( $post->ID, 'product_cat' );

foreach($cats as $cat) $cats_arr[] = $cat->name;

if ( count($cats_arr) > 1) $cats_str = $cats_arr[0] . ', ' . $cats_arr[1]; // return first 2 terms
elseif ( count($cats_arr) == 1) $cats_str = $cats_arr[0]; // return one term
else $cats_str = '';

// TV shows categories
$tvcats = get_the_terms( $post->ID, 'tvshows_cat' );

foreach($tvcats as $tvcat) $tvcat_arr[] = $tvcat->name;

if ( count($tvcat_arr) > 1) $tvcats_str = $tvcat_arr[0] . ', ' . $tvcat_arr[1]; // return first 2 terms
elseif ( count($tvcat_arr) == 1) $tvcats_str = $tvcat_arr[0]; // return one term
else $tvcats_str = '';

// The Display of 2 categories
echo $cats_str . $tvcats_str;

This code goes on your php templates files

This code is tested and works.

Upvotes: 5

hasan movahed
hasan movahed

Reputation: 364

you can also using explode() with array_slice() for this problem .

for example : 

function display_limited_terms($items){
    $filter = explode(',', $items);
    $a = array_slice($filter, 0, 2);
    foreach ($a as $b) {
        echo $b;
    }
}


$cats = get_the_term_list($post->ID, 'product_cat', '', '  ', '');
$tvcats = get_the_term_list($post->ID, 'tvshows_cat', '', '  ', '');

if (!empty($cats)) {

    display_limited_terms(strip_tags($cats, '   '));
} elseif (!empty($tvcats)) {

    display_limited_terms(strip_tags($cats, '   '));
}

Upvotes: 4

Varun Kumar
Varun Kumar

Reputation: 478

I am assuming your final output is a comma separated string - Action, Drama, Adventure, Biography, Animation.

To show only two items you can 

$items = "item1, item2, item3, item4";

$filter = explode(',', $items);

for( $i=0; $i<2; $i++ ) {
    echo $filter[$i];
}

Try replacing the code you provided above with the following

    function display_limited_terms( $items ) {
        $filter = explode(',', $items);

        for( $i=0; $i<2; $i++ ) {
            echo $filter[$i];
        }
    }


    $cats = get_the_term_list($post->ID, 'product_cat', '', '  ', '');
    $tvcats = get_the_term_list($post->ID, 'tvshows_cat', '', '  ', '');

    if (!empty($cats)){

        display_limited_terms( strip_tags($cats, '   ') );
    }

    elseif(!empty($tvcats)) {

        display_limited_terms( strip_tags($cats, '   ') );
    }

Upvotes: 3

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