How can group a form's checkboxes into an array in Node?

Question

I am trying to create a form with several checkboxes. I want each checkbox to share the same name, and the values of the ones checked off to be submitted with the form. I know that this can be done with PHP (see this SO question) but I can't figure out how to do it with Node.js and Express. Here's a modified version of my HTML:

<label><input type="checkbox" name="section[]" value="1" />Item Name</label>
<label><input type="checkbox" name="section[]" value="2" />Item Name</label>
<label><input type="checkbox" name="section[]" value="3" />Item Name</label>

When I handle the POST request, I've tried accessing the values with both req.param('section') and req.param('section[]') but they both return undefined.

It would be helpful if you also posted your code. Different body parsing modules can parse form data differently. — mscdex
– mscdex, Commented Dec 6, 2014 at 1:27
The whole codebase is on github, the parsing code is around line 102 of this file. — Greg
– Greg, Commented Dec 6, 2014 at 1:51

mscdex · Accepted Answer · 2014-12-06 02:17:19Z

8

If you change this line in your app.js:

app.use(bodyParser.urlencoded({ extended: false }));

to:

app.use(bodyParser.urlencoded({ extended: true }));

you should get what you are expecting with req.param('section').

answered Dec 6, 2014 at 2:17

mscdex

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