Umbraco is one of my personal favourite content management system (CMS). Umbraco's content editing experience and extensibility tops my personal list.
For one of my previous web projects, one of the requirements was to be able to use custom tag and attributes in the rich text editor (RTE) for client side rendering purposes.
However, Umbraco's RTE by default does not allow custom tags or attributes such as <vue-component> or <div v-on:click=""> respectively.
How to get around this?
Umbraco uses TinyMCE as its RTE and its configuration is handled by a config file called tinyMceConfig.config. You can find this file in the directory, '/config/tinyMceConfig.config'.
In the tinyMceConfig.config, you just need to look for a tag called <ValidElement>. By default , it will be set as below:
<validElements>
<![CDATA[+a[id|style|rel|data-id|data-udi|rev|charset|hreflang|dir|lang|tabindex|accesskey|type|name|href|target|title|class|onfocus|onblur|onclick|
ondblclick|onmousedown|onmouseup|onmouseover|onmousemove|onmouseout|onkeypress|onkeydown|onkeyup],-strong/-b[class|style],-em/-i[class|style],
-strike[class|style],-u[class|style],#p[id|style|dir|class|align],-ol[class|reversed|start|style|type],-ul[class|style],-li[class|style],br[class],
img[id|dir|lang|longdesc|usemap|style|class|src|onmouseover|onmouseout|border|alt=|title|hspace|vspace|width|height|align|umbracoorgwidth|umbracoorgheight|onresize|onresizestart|onresizeend|rel|data-id],
-sub[style|class],-sup[style|class],-blockquote[dir|style|class],-table[border=0|cellspacing|cellpadding|width|height|class|align|summary|style|dir|id|lang|bgcolor|background|bordercolor],
-tr[id|lang|dir|class|rowspan|width|height|align|valign|style|bgcolor|background|bordercolor],tbody[id|class],
thead[id|class],tfoot[id|class],#td[id|lang|dir|class|colspan|rowspan|width|height|align|valign|style|bgcolor|background|bordercolor|scope],
-th[id|lang|dir|class|colspan|rowspan|width|height|align|valign|style|scope],caption[id|lang|dir|class|style],-div[id|dir|class|align|style],
-span[class|align|style],-pre[class|align|style],address[class|align|style],-h1[id|dir|class|align|style],-h2[id|dir|class|align|style],
-h3[id|dir|class|align|style],-h4[id|dir|class|align|style],-h5[id|dir|class|align|style],-h6[id|style|dir|class|align|style],hr[class|style],small[class|style],
dd[id|class|title|style|dir|lang],dl[id|class|title|style|dir|lang],dt[id|class|title|style|dir|lang],object[class|id|width|height|codebase|*],
param[name|value|_value|class],embed[type|width|height|src|class|*],map[name|class],area[shape|coords|href|alt|target|class],bdo[class],button[class],iframe[*]]]>
</validElements>The value between the validElement tag indicates all the HTML tags and attributes allowed in the RTE.
To enable all custom tags and attributes, you just replace it so that the value of the valid element tag will look like this:
<validElements>
*[*]
</validElements>