categories loop on a plugin

[exodo]

whats the best approach to list categories from my forum with a plugin?

thank you

[yariplus]

If you just want the list, you can do something like

Categories.getAllCategoryFields(['name', 'parentCid', 'children'], function(err, categories) {
  console.dir(categories);
});

If you want to display them in a template, I would copy what's in the categories controller. It gets all the categories by privilege, then puts them in a tree format, for easy display.

https://github.com/NodeBB/NodeBB/blob/master/src/controllers/categories.js#L43-L51

[exodo]

@yariplus said in categories loop on a plugin:

If you just want the list, you can do something like

Categories.getAllCategoryFields(['name', 'parentCid', 'children'], function(err, categories) {
  console.dir(categories);
});

If you want to display them in a template, I would copy what's in the categories controller. It gets all the categories by privilege, then puts them in a tree format, for easy display.

https://github.com/NodeBB/NodeBB/blob/master/src/controllers/categories.js#L43-L51

so included script on my tpl and...

Uncaught Error: Module name "../categories" has not been loaded yet for context: _. Use require([])

[yariplus]

@exodo Those are for the server, on the client use socket.io

socket.emit('categories.get', {}, function(err, data){
  console.dir(data); /* data is an array of categories. */
});

[exodo]

@yariplus said in categories loop on a plugin:

@exodo Those are for the server, on the client use socket.io

socket.emit('categories.get', {}, function(err, data){
  console.dir(data); /* data is an array of categories. */
});

i see thank you
can you explain how to make it with the server and how to call it on the template?

[yariplus]

Sure.

library.js

Plugin = module.exports;

var categories = require.main.require('./src/categories');

// init hook
Plugin.init = function (data, callback) {
	var router      = data.router;
	var middleware  = data.middleware;

	// Create route to render the template to.
	router.get('/example-categories', middleware.buildHeader, renderExampleCategories);
	router.get('/api/example-categories', renderExampleCategories);

	function renderExampleCategories(req, res, next) {
		// Get all the visible categories.
		categories.getCategoriesByPrivilege('cid:0:children', req.uid, 'find', function(err, categoryData) {
			if (err) return next(err);

			// Put the categories in a tree format.
			categories.flattenCategories([], categoryData);

			// Send the data to the template. `example-categories.tpl`
			res.render('example-categories', {categories: categoryData});
		});
	}
};

example-categories.tpl

<!-- BEGIN categories -->
	<a href="{config.relative_path}/category/{categories.slug}" itemprop="url">{categories.name}</a> <br>
	<!-- BEGIN categories.children -->
		- <a href="{config.relative_path}/category/{categories.children.slug}" itemprop="url">{categories.children.name}</a> <br>
	<!-- END categories.children -->
<!-- END categories -->

Should give you a list like this