Retrieve setting value from the client side

[benabel]

Hi, I just written the [nodebb-plugin-katex], and I'd like to change the delimiters inside the formatting.addButtonDipatch function in the client.js script here when the user change the dollarInline setting inside the ACP.

To do this, I need to get the value of the setting called dollarInline inside this client script. I know that I can retrieve this setting from the server side using:

meta.settings.get('katex', function (err, options) {
					console.log(err, options.dollarInline);
				});

However, I can't figure out how I can get this value from the client side?

[rbeer]

I'm not sure if I understood you correctly, but I think you want to use the PluginSocket (socket.io) for this:

Server:
https://github.com/rbeer/nodebb-plugin-smoothshorts/blob/master/smoothshorts_be.js#L60-L67
Client:
https://github.com/rbeer/nodebb-plugin-smoothshorts/blob/master/static%2Flib%2Fsmoothshorts_fe.js#L21-L24

[benabel]

Thank you @rbeer, with the help of your examples and th socket.io library I implemented it in this commit.

Here are some elements:

In the server side I've created a socket with a function to pass the desired config:

// Create a socket to pass config to the client-side
PluginSocket.Katex = {};
PluginSocket.Katex.getConfig = function (socket, callback) {
var data = {
dollarInline: _self.config.dollarInline,
};
callback(data);
};

In the client side I retrieve the config from the socket using a jquert deferred.promise:

// Retrieve config from the plugin socket and then add the composer button
var Katex = {};
var deferred = new $.Deferred();

function callBack(config) {
Katex.dollarInline = config.dollarInline;
deferred.resolve(config);
}
// do the async call to the socket.
socket.emit('plugins.Katex.getConfig', callBack);

...
// add the usd button to the composer when config caught from socket
$.when(deferred).then(addComposerButton);

[rbeer]

Always makes me smile when I can help.
Your plugin also opened nodeBB to a more scientific audience, which I personaly find extra apealing.