Do an action when users go to topics

[Landa]

Hello guys. First I need apologize for my bad expression because in this moment I'm learning English and my control of the English language is very poor.

My problem is the next, I'm developing a plugin that allows users to write special tags in title (For example, "+nsfw" or "+private". This tags grant some features to post. What hook do I need use?

In this moment I have that, but it doesn't work.

Plugin.json

{
  "id": "nodebb-plugin-tagstitle"
, "name": "Special Tags in Title for NodeBB"
, "description": "This plugin allows users create new topics with special restrictions with special tags, for example, +hd, +prv, +nsfw..."
, "url": "https://github.com/rbbau/nodebb-plugin-tags-title"
, "library": "./library.js"
,"hooks": [
	{ "hook": "filter:category.topics.get", "method": "goPage" },
]
}

Library.js

Topics = module.parent.require('./topics'),
User = module.parent.require('./user'),

var TagsTitle = {};
	
	TagsTitle.goPage = function(postData) {
	//Conseguimos el título del post en minúsculas
	var topicTitle = function() {
		var topicTitle = postData;
		var topicTitleLower = topicTitle.toLowerCase();
		return topicTitleLower;
    };
	alert(postData);
	//Analizamos si existe el título o no para aplicar medidas
	if(topicTitle == null) {  
	//Don't do anything  
	console.log('Título sin etiquetas');
    }		
	else {
		console.log('Título con etiquetas');
		if(topicTitle.includes('+hd') == true)
		{
			//The topic titles contains +HD
		}
		else if(topicTitle.includes('+prv') == true)
		{
			//The topic titles contains +prv
		}
		else if(topicTitle.includes('+18') == true)
		{
			//The topic titles contains +18
		}
		else if(topicTitle.includes('+nsfw') == true)
		{
			//The topic titles contains +nsfw
		}		 			
	}
	}
module.exports = TagsTitle;

[julian]

Your if statement is wrong. It should be if (topicTitle == null) or if (!topicTitle)

[Landa]

Thanks, I have just solved the error.

But the code doesn't work for now. How can I do execute a function when user go to topic?

Thanks