v1.0.0

.gitignore

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 # https://git-scm.com/docs/gitignore
 # https://help.github.com/articles/ignoring-files
 # Example .gitignore files: https://github.com/github/gitignore
+/node_modules/

README.md

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+# form-fix-array
+
+This makes sure that form data is handled correctly when sent to a server.
+
+While arrays are a natively supported feature of HTTP form data (whether URL-encoded or multipart/form-data), implementation differences exist. Especially PHP is notorious for refusing to recognize a field as an array unless it specifically has array brackets in the field name. This means that `field=val1&field=val2` will simply be interpreted as `val2`, whereas `field[]=val1&field[]=val2` will be interpreted as an array containing `val1` and `val2`.
+
+This module ensures that all fields containing an array of values have a `[]` suffix, adding it where necessary (and doing nothing where it is already there). That way, every receiving server should be able to handle the request.
+
+It does not currently support objects ('associative arrays'), only plain arrays.
+
+## License
+
+[WTFPL](http://www.wtfpl.net/txt/copying/) or [CC0](https://creativecommons.org/publicdomain/zero/1.0/), whichever you prefer. A donation and/or attribution are appreciated, but not required.
+
+## Donate
+
+My income consists entirely of donations for my projects. If this module is useful to you, consider [making a donation](http://cryto.net/~joepie91/donate.html)!
+
+You can donate using Bitcoin, PayPal, Gratipay, Flattr, cash-in-mail, SEPA transfers, and pretty much anything else.
+
+## Contributing
+
+Pull requests welcome. Please make sure your modifications are in line with the overall code style, and ensure that you're editing the `.coffee` files, not the `.js` files.
+
+Build tool of choice is `gulp`; simply run `gulp` while developing, and it will watch for changes.
+
+Be aware that by making a pull request, you agree to release your modifications under the licenses stated above.
+
+## Usage
+
+```javascript
+var formFixArray = require("form-fix-array");
+
+var sampleFormData = {
+	"fieldOne": "value 1",
+	"fieldTwo": ["value 2a", "value 2b"],
+	"fieldThree[]": ["value 3a", "value 3b"]
+}
+
+var fixedFormData = formFixArray(sampleFormData);
+
+/* Result:
+{
+	"fieldOne": "value 1",
+	"fieldTwo[]": ["value 2a", "value 2b"],
+	"fieldThree[]": ["value 3a", "value 3b"]
+}
+*/
+```

gulpfile.js

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+var gulp = require('gulp');
+
+/* CoffeeScript compile deps */
+var path = require('path');
+var gutil = require('gulp-util');
+var concat = require('gulp-concat');
+var rename = require('gulp-rename');
+var coffee = require('gulp-coffee');
+var cache = require('gulp-cached');
+var remember = require('gulp-remember');
+var plumber = require('gulp-plumber');
+
+var source = ["lib/**/*.coffee", "index.coffee"]
+
+gulp.task('coffee', function() {
+	return gulp.src(source, {base: "."})
+		.pipe(plumber())
+		.pipe(cache("coffee"))
+		.pipe(coffee({bare: true}).on('error', gutil.log)).on('data', gutil.log)
+		.pipe(remember("coffee"))
+		.pipe(gulp.dest("."));
+});
+
+gulp.task('watch', function () {
+	gulp.watch(source, ['coffee']);
+});
+
+gulp.task('default', ['coffee', 'watch']);

index.coffee

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+module.exports = require "./lib/form-fix-array"

index.js

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+module.exports = require("./lib/form-fix-array");

lib/form-fix-array.coffee

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+endsWith = (str, suffix) -> str.indexOf(suffix, str.length - suffix.length) != -1
+
+module.exports = (formFields) ->
+	correctedFormFields = {}
+
+	for fieldKey, fieldValue of formFields
+		newKey = switch Array.isArray fieldValue
+			when false then fieldKey
+			when true
+				if endsWith(fieldKey, "[]")
+					fieldKey
+				else
+					fieldKey + "[]"
+
+		correctedFormFields[newKey] = fieldValue
+
+	return correctedFormFields

lib/form-fix-array.js

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+var endsWith;
+
+endsWith = function(str, suffix) {
+  return str.indexOf(suffix, str.length - suffix.length) !== -1;
+};
+
+module.exports = function(formFields) {
+  var correctedFormFields, fieldKey, fieldValue, newKey;
+  correctedFormFields = {};
+  for (fieldKey in formFields) {
+    fieldValue = formFields[fieldKey];
+    newKey = (function() {
+      switch (Array.isArray(fieldValue)) {
+        case false:
+          return fieldKey;
+        case true:
+          if (endsWith(fieldKey, "[]")) {
+            return fieldKey;
+          } else {
+            return fieldKey + "[]";
+          }
+      }
+    })();
+    correctedFormFields[newKey] = fieldValue;
+  }
+  return correctedFormFields;
+};

package.json

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+{
+  "name": "form-fix-array",
+  "version": "1.0.0",
+  "description": "Fixes key names for HTTP form data, to ensure that arrays are handled correctly.",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/joepie91/node-form-fix-array"
+  },
+  "keywords": [
+    "form-data",
+    "http",
+    "array"
+  ],
+  "author": "Sven Slootweg",
+  "license": "WTFPL",
+  "devDependencies": {
+    "gulp": "~3.8.0",
+    "gulp-cached": "~0.0.3",
+    "gulp-coffee": "~2.0.1",
+    "gulp-concat": "~2.2.0",
+    "gulp-livereload": "~2.1.0",
+    "gulp-nodemon": "~1.0.4",
+    "gulp-plumber": "~0.6.3",
+    "gulp-remember": "~0.2.0",
+    "gulp-rename": "~1.2.0",
+    "gulp-util": "~2.2.17"
+  }
+}