Style topics differently by category

Brass Man

Hi there,

Is there any way to style topics differently based on the category they belong to? The current page name is appended to the <body> tag as a class, but I can't find a way for the CSS to know anything about a topic's parent category.

I can solve the issue with a javscript hack by reading the category name from the breadcrumbs, but this seems ... terrible.

Is there a less terrible way to expose category information to the topic template?

<baris>

You can do it with a plugin, listen for the hook filter:middleware.render and add the class you want to the bodyClass string if the user is on a topic page. Here is some code to get you going.

// this goes in your plugin
myPlugin.onPageRender = function (hookData, callback) {
  // this checks if we are on the topic page
  if (hookData.templateData.template.topic) {
    // add the class `category-<cid>` to bodyClass
    hookData.templateData.bodyClass += ' category-' + hookData.templateData.category.cid;
  }  
  callback(null, hookData);
};

Hope that helps.

Brass Man

fantastic! my codebase is much happier now