Get values from Javascript object in Rails controller

Question

I'm fairly new to Rails but I have a situation where a user can create a vacancy and select modules for that vacancy by dragging en dropping modules. Everytime something has changed (a module has been added/removes to the vacancy of the order has changed) I send a javascript object to the rails controller through AJAX and I want to extract the values from this object and story them in my DB.

My object will look like this:

addedModules = {
   module: [
      {module_id: '1', name: 'first-module', width: '3', height: '1', position: '1'},
      {module_id: '5', name: 'fifth-module', width: '1', height: '1', position: '2'},
      {module_id: '3', name: 'third-module', width: '4', height: '1', position: '3'},
   ]
};

In my controller I would like to go through every module and extract their module_id, name, etc.

AJAX block:

$.ajax({
    type: "POST",
    url: "../../../vacancies/" + <%= params[:vacancy_id] %> + "/update_with_modules",
    data: "addedModules=" + addedModules
}).done(function (response) {
    console.log(response);
});

Is there a way to do so or is there a better solution?

I get the object using params[:addedModules], but if I use params[:addedModules][0] or something like that I get "[" and with params[:addedModules][1] I get "o" so it's getting the word "object" and not the values of the object. — Pixeldenker
– Pixeldenker, Commented Jan 23, 2017 at 14:07

Othmane El Kesri · Accepted Answer · 2017-01-23 14:45:02Z

1

Change this line:

data: "addedModules=" + addedModules

by this line:

data: {addedModules: addedModules}

answered Jan 23, 2017 at 14:45

Othmane El Kesri

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