{"id":712,"date":"2004-09-13T16:09:48","date_gmt":"2004-09-13T16:09:48","guid":{"rendered":"http:\/\/beta.robertprice.co.uk\/robblog\/2004\/09\/alternating_table_rows_with_template_toolkit_and_css-shtml\/"},"modified":"2004-09-13T16:09:48","modified_gmt":"2004-09-13T16:09:48","slug":"alternating_table_rows_with_template_toolkit_and_css-shtml","status":"publish","type":"post","link":"https:\/\/www.robertprice.co.uk\/robblog\/alternating_table_rows_with_template_toolkit_and_css-shtml\/","title":{"rendered":"Alternating Table Rows With Template Toolkit And CSS"},"content":{"rendered":"

\nWhilst looking at a potential recode of the Smash Hits Chart<\/a> website, I came across the need to make each alternate row in the main chart table a different colour.\n<\/p>\n

\nAs the recode will be using Template Toolkit<\/a>, this is simple.\n<\/p>\n

\nThe chart is passed as a list, so we have to iterate over it to get each entry out. I do this using a simple [% FOREACH %]<\/code>. Template Toolkit thoughtfully provides us with a Template::Iterator<\/a> object called loop<\/var> inside the FOREACH<\/code> block, so we can use the index()<\/code><\/a> method to get the current elements list position. Using this, we just need to check if the value is odd or even to decide what colour to make the row.\n<\/p>\n

\nLet’s see some sample code. To change the row’s colour I’m going to use two CSS<\/acronym> classes called lite<\/var> and dark<\/var>.\n<\/p>\n

<table>
\n[% FOREACH entry = chart %]
\n<tr class=\"[% IF loop.index % 2 %]lite[% ELSE %]dark[% END %]\">
\n<td>[% entry.position %]<\/td>
\n<td>[% entry.artist %]<\/td>
\n<td>[% entry.track %]<\/td>
\n<tr>
\n[% END %]
\n<\/table>
\n<\/code><\/div>\n

\nThe magic is in the line loop.index % 2<\/code>. It takes the remainer (modulus) of loop.index<\/var> divided by 2. This returns either 0 or 1, which is what Template Toolkit uses to determine truth, so can be used directly in the IF<\/code> statement.<\/p>\n","protected":false},"excerpt":{"rendered":"

Whilst looking at a potential recode of the Smash Hits Chart website, I came across the need to make each alternate row in the main chart table a different colour. As the recode will be using Template Toolkit, this is simple. The chart is passed as a list, so we have to iterate over it … Continue reading “Alternating Table Rows With Template Toolkit And CSS”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2],"tags":[47],"class_list":["post-712","post","type-post","status-publish","format-standard","hentry","category-dev","tag-perl"],"yoast_head":"\nAlternating Table Rows With Template Toolkit And CSS - Robert Price<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.robertprice.co.uk\/robblog\/alternating_table_rows_with_template_toolkit_and_css-shtml\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alternating Table Rows With Template Toolkit And CSS - Robert Price\" \/>\n<meta property=\"og:description\" content=\"Whilst looking at a potential recode of the Smash Hits Chart website, I came across the need to make each alternate row in the main chart table a different colour. 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