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A pet hate of mine is when an editor uses a paragraph of bold text for what ought to be a heading. When I need to tidy up poorly formatted content like this I will quickly change such lines of text into the heading of the appropriate level, but that still results in markup like... <h2><strong>Some heading text</strong></h2> The <strong> has no business being there, but it's a bit of a hassle to remove it because you have to drag a selection around the exact text as opposed to just placing your cursor within the line. That gets tedious if you have a lot content to process. I figured there has to be an easier way so started looking into the ACF (Advanced Content Filter) features of CKEditor. What I wanted is a rule that says "strong tags are disallowed specifically when they are within a heading tag". (I guess there could occasionally be a use case where it would be reasonable to have a strong tag within a heading tag, but it's so rare that I'm not bothered about it). With the typical string format for allowedContent and disallowedContent there is no ability to disallow a specific tag only when it is within another specific tag - a tag is allowed everywhere or not at all. But I found there is an alternative object format for these rules that supports a callback function in the "match" property. So I was able to achieve my goal with the following in /site/modules/InputfieldCKEditor/config.js: CKEDITOR.editorConfig = function(config) { config.disallowedContent = { // Rule for the <strong> element strong: { // Use "match" callback to determine if the element should be disallowed or not match: function(element) { // Heading tag names var headings = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6']; // The parent of the element (if any) var parent = element.parent; if(typeof parent !== 'undefined') { // If there is a parent, return true if its name is in the heading names array return headings.indexOf(parent.name.toLowerCase()) !== -1; } else { // There is no parent so the element is allowed return false; } } } } }; Another tip: if you want to debug your allowedContent or disallowedContent rules to make sure they are being parsed and applied successfully you can log the filter rules to the console. For convenience I used /site/modules/InputfieldCKEditor/config.js again. // Get the CKEditor instance you want to debug var editor = CKEDITOR.instances.Inputfield_body; editor.on('instanceReady', function() { // Log the disallowed content rules console.log(editor.filter.disallowedContent); });- 2 replies
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