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Additionals: Added maxsize plugin #1512

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Additionals: Added maxsize plugin #1512

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30 changes: 30 additions & 0 deletions src/additional/maxsize.js
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Original file line number Diff line number Diff line change
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// Require a file at/under a given size
// Usage: `{rules: {file: {maxsize: 5 * 1024 * 1024 /* 5MB */}}}`
$.validator.addMethod("maxsize", function(value, element, param) {
// If the value is optional, return it
var maxSize = param,
optionalValue = this.optional(element),
i, len, file;
if (optionalValue) {
return optionalValue;
}

// If the element is a file, then verify the size is at most what we expect
if ($(element).attr("type") === "file") {
// If we are in a browser that supports FileList, then check the files
if (element.files && element.files.length) {
i = 0;
len = element.files.length;
for (; i < len; i++) {
file = element.files[i];
// `file.size` is size in bytes
if (file.size > maxSize) {
return false;
}
}
}
}

// Return success (either we don't have access to files due to older browser or files looked good)
return true;
}, $.validator.format("Please submit a file that is under the maximum size."));