// Accept a value from a file input based on a required mimetype
|
$.validator.addMethod("accept", function(value, element, param) {
|
// Split mime on commas in case we have multiple types we can accept
|
var typeParam = typeof param === "string" ? param.replace(/\s/g, "").replace(/,/g, "|") : "image/*",
|
optionalValue = this.optional(element),
|
i, file;
|
|
// Element is optional
|
if (optionalValue) {
|
return optionalValue;
|
}
|
|
if ($(element).attr("type") === "file") {
|
// If we are using a wildcard, make it regex friendly
|
typeParam = typeParam.replace(/\*/g, ".*");
|
|
// Check if the element has a FileList before checking each file
|
if (element.files && element.files.length) {
|
for (i = 0; i < element.files.length; i++) {
|
file = element.files[i];
|
|
// Grab the mimetype from the loaded file, verify it matches
|
if (!file.type.match(new RegExp( "\\.?(" + typeParam + ")$", "i"))) {
|
return false;
|
}
|
}
|
}
|
}
|
|
// Either return true because we've validated each file, or because the
|
// browser does not support element.files and the FileList feature
|
return true;
|
}, $.validator.format("Please enter a value with a valid mimetype."));
|
