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Having problems with line breaks, blank spaces between lines on Excel. How to solve that?

I'm using [email protected] for an old project. This library don't add .csv method to the right response object for this version of express.

express.response and http.ServerResponse are both available for this version, but express actually uses http.ServerResponse. So you only add .csv method on the first object, and the test passed for that reason.

Does it work with Express 3?

It'd be great to have this as middleware which would add to res object the csv method.

For example:

var expressCsv = require('express-csv')

// ...

app.use(expressCsv)

// ... or only apply it to some routes ...

app.get('/some-route', expressCsv, function(req, res, next) {
  res.csv([ { a: 1, b: 2 } ])
})

Thank you for this。

How to set a header row?

Hi,

Many thanks for this package - very useful.

I am using it to convert an array of objects, most come out ok, columns in the same order, but a few come out with the columns jumbled up - relative to the rest.

Looking at the code, it just iterates over the properties to convert it into an array.

Any plans to try to make it more consistent?

Perhaps look at the first object and then use that to determine the fields to use for the others. Although that assumes that they are all the same...

Cheers,
Chris

How can I change the comma for a semicolon?

This package doesn't fully work with express 4.x (haven't tested other versions). More specifically, the sending of headers and status is not working, and deprecated respectively.

Fixing this is fairly easy:

Replace this.header('Content-Type', 'text/csv'); with this.set('Content-Type', 'text/csv');
and return this.send(body, headers, status); with:

this.set(headers);
return this.status(status).send(body);

Getting a strange output in the Excel CSV file:

[object Object]|"false"||"0"|"[object Object]"|"[object Object]"|"[object Object]"|"function () {
var self = this
, hookArgs // arguments eventually passed to the hook - are mutable
, lastArg = arguments[arguments.length-1]
, pres = this._pres[name]
, posts = this.posts[name]
, total = pres.length
, current = -1
, asyncsLeft = proto[name].numAsyncPres
, next = function () {
if (arguments[0] instanceof Error) {
return handleError(arguments[0]);
}
var args = Array.prototype.slice.call(arguments)
, currPre
, preArgs;
if (args.length && !(arguments[0] == null && typeof lastArg === 'function'))
hookArgs = args;
if (++current < total) {
currPre = pres[current]
if (currPre.isAsync && currPre.length < 2)
throw new Error(""Your pre must have next and done arguments -- e.g., function (next, done, ...)"");
if (currPre.length < 1)
throw new Error(""Your pre must have a next argument -- e.g., function (next, ...)"");
preArgs = (currPre.isAsync
? [once(next), once(asyncsDone)]
: [once(next)]).concat(hookArgs);
return currPre.apply(self, preArgs);
} else if (!proto[name].numAsyncPres) {
return done.apply(self, hookArgs);
}
}
, done = function () {
var args = Array.prototype.slice.call(arguments)
, ret, total, current, next, done, postArgs;
if (current === total) {
ret = fn.apply(self, args);
total = posts.length;
current = -1;
next = function () {
if (arguments[0] instanceof Error) {
return handleError(arguments[0]);
}
var args = Array.prototype.slice.call(arguments, 1)
, currPost
, postArgs;
if (args.length) hookArgs = args;
if (++current < total) {
currPost = posts[current]
if (currPost.length < 1)
throw new Error(""Your post must have a next argument -- e.g., function (next, ...)"");
postArgs = [once(next)].concat(hookArgs);
return currPost.apply(self, postArgs);
}
};
if (total) return next();
return ret;
}
};
if (_asyncsLeft) {
function _asyncsDone (err) {
if (err && err instanceof Error) {
return handleError(err);
}
--_asyncsLeft || _done.apply(self, hookArgs);
}
}
function handleError (err) {
if ('function' == typeof lastArg)
return lastArg(err);
if (errorCb) return errorCb.call(self, err);
throw err;
}
return _next.apply(this, arguments);
}"|"[object Object]"