I have been having a few issues trying to get the following script to validate inputs.
app = connect()
.use(connect.bodyParser()) #So we can get the post data.
.use(req,res) ->
valid = false if (req.body.name is "") or (req.body.question is "") or (req.body.email is "") #Was all the data submitted?
if valid
#process request
http.createServer(app).listen(1407)
In order to debug I have used console.log to list the inputs, where it returns two inputs, one with the correct data and another undefined
I was previously using req.body.name? as well, but it is only rewriting as req.body.question != null and not checking for undefined.
The HTML form
<form action="_serverurl_" method="post">
<input type="text" placeholder="Your Name" name="name">
<input type="text" placeholder="Your Email" name="email">
<input type="text" placeholder="Subject" name="subject">
<textarea name="question" placeholder="Question"></textarea>
<div class="right"><input type="submit" class="submit" name="submit" value="Send"></div>
</form>
The part confusing me the most is why there are two inputs to the server?
Debug info:
Actually I can't see why your code would not work, but an approach may be splitting it into smaller manageable components.
For validation you could define a function, that allows you to determine whether a field is valid or not (see isFieldValid below).
isFieldValid = (field) -> field? and field.length > 0
app = connect()
.use(connect.bodyParser()) #So we can get the post data.
.use (req,res) ->
# pickup the body vars first to ease reading
{name, email, subject, question} = req.body
# valid should be always defined, even if it's only true/false
# Was all the data submitted?
valid = isFieldValid(name) and isFieldValid(email) and isFieldValid(question)
if valid
# process request
else
# handle invalid data
res.send(400, ...)
If you're looking for a more elaborate validation library I'd recommend Validator.
Hope that helps.