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Editing: jquery.serializejson.js

/*!
  SerializeJSON jQuery plugin.
  https://github.com/marioizquierdo/jquery.serializeJSON
  version 2.9.0 (Jan, 2018)

Copyright (c) 2012-2018 Mario Izquierdo
  Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
  and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
*/
(function (factory) {
  if (typeof define === 'function' && define.amd) { // AMD. Register as an anonymous module.
    define(['jquery'], factory);
  } else if (typeof exports === 'object') { // Node/CommonJS
    var jQuery = require('jquery');
    module.exports = factory(jQuery);
  } else { // Browser globals (zepto supported)
    factory(window.jQuery || window.Zepto || window.$); // Zepto supported on browsers as well
  }

}(function ($) {
  "use strict";

// jQuery('form').serializeJSON()
  $.fn.serializeJSON = function (options) {
    var f, $form, opts, formAsArray, serializedObject, name, value, parsedValue, _obj, nameWithNoType, type, keys, skipFalsy;
    f = $.serializeJSON;
    $form = this; // NOTE: the set of matched elements is most likely a form, but it could also be a group of inputs
    opts = f.setupOpts(options); // calculate values for options {parseNumbers, parseBoolens, parseNulls, ...} with defaults

// Use native `serializeArray` function to get an array of {name, value} objects.
    formAsArray = $form.serializeArray();
    f.readCheckboxUncheckedValues(formAsArray, opts, $form); // add objects to the array from unchecked checkboxes if needed

// Convert the formAsArray into a serializedObject with nested keys
    serializedObject = {};
    $.each(formAsArray, function (i, obj) {
      name  = obj.name; // original input name
      value = obj.value; // input value
      _obj = f.extractTypeAndNameWithNoType(name);
      nameWithNoType = _obj.nameWithNoType; // input name with no type (i.e. "foo:string" => "foo")
      type = _obj.type; // type defined from the input name in :type colon notation
      if (!type) type = f.attrFromInputWithName($form, name, 'data-value-type');
      f.validateType(name, type, opts); // make sure that the type is one of the valid types if defined

if (type !== 'skip') { // ignore inputs with type 'skip'
        keys = f.splitInputNameIntoKeysArray(nameWithNoType);
        parsedValue = f.parseValue(value, name, type, opts); // convert to string, number, boolean, null or customType

skipFalsy = !parsedValue && f.shouldSkipFalsy($form, name, nameWithNoType, type, opts); // ignore falsy inputs if specified
        if (!skipFalsy) {
          f.deepSet(serializedObject, keys, parsedValue, opts);
        }
      }
    });
    return serializedObject;
  };

// Use $.serializeJSON as namespace for the auxiliar functions
  // and to define defaults
  $.serializeJSON = {

defaultOptions: {
      checkboxUncheckedValue: undefined, // to include that value for unchecked checkboxes (instead of ignoring them)

parseNumbers: false, // convert values like "1", "-2.33" to 1, -2.33
      parseBooleans: false, // convert "true", "false" to true, false
      parseNulls: false, // convert "null" to null
      parseAll: false, // all of the above
      parseWithFunction: null, // to use custom parser, a function like: function(val){ return parsed_val; }

skipFalsyValuesForTypes: [], // skip serialization of falsy values for listed value types
      skipFalsyValuesForFields: [], // skip serialization of falsy values for listed field names

customTypes: {}, // override defaultTypes
      defaultTypes: {
        "string":  function(str) { return String(str); },
        "number":  function(str) { return Number(str); },
        "boolean": function(str) { var falses = ["false", "null", "undefined", "", "0"]; return falses.indexOf(str) === -1; },
        "null":    function(str) { var falses = ["false", "null", "undefined", "", "0"]; return falses.indexOf(str) === -1 ? str : null; },
        "array":   function(str) { return JSON.parse(str); },
        "object":  function(str) { return JSON.parse(str); },
        "auto":    function(str) { return $.serializeJSON.parseValue(str, null, null, {parseNumbers: true, parseBooleans: true, parseNulls: true}); }, // try again with something like "parseAll"
        "skip":    null // skip is a special type that makes it easy to ignore elements
      },

useIntKeysAsArrayIndex: false // name="foo[2]" value="v" => {foo: [null, null, "v"]}, instead of {foo: ["2": "v"]}
    },

// Merge option defaults into the options
    setupOpts: function(options) {
      var opt, validOpts, defaultOptions, optWithDefault, parseAll, f;
      f = $.serializeJSON;

if (options == null) { options = {}; }   // options ||= {}
      defaultOptions = f.defaultOptions || {}; // defaultOptions

// Make sure that the user didn't misspell an option
      validOpts = ['checkboxUncheckedValue', 'parseNumbers', 'parseBooleans', 'parseNulls', 'parseAll', 'parseWithFunction', 'skipFalsyValuesForTypes', 'skipFalsyValuesForFields', 'customTypes', 'defaultTypes', 'useIntKeysAsArrayIndex']; // re-define because the user may override the defaultOptions
      for (opt in options) {
        if (validOpts.indexOf(opt) === -1) {
          throw new  Error("serializeJSON ERROR: invalid option '" + opt + "'. Please use one of " + validOpts.join(', '));
        }
      }

// Helper to get the default value for this option if none is specified by the user
      optWithDefault = function(key) { return (options[key] !== false) && (options[key] !== '') && (options[key] || defaultOptions[key]); };

// Return computed options (opts to be used in the rest of the script)
      parseAll = optWithDefault('parseAll');
      return {
        checkboxUncheckedValue:    optWithDefault('checkboxUncheckedValue'),

parseNumbers:  parseAll || optWithDefault('parseNumbers'),
        parseBooleans: parseAll || optWithDefault('parseBooleans'),
        parseNulls:    parseAll || optWithDefault('parseNulls'),
        parseWithFunction:         optWithDefault('parseWithFunction'),

skipFalsyValuesForTypes:   optWithDefault('skipFalsyValuesForTypes'),
        skipFalsyValuesForFields:  optWithDefault('skipFalsyValuesForFields'),
        typeFunctions: $.extend({}, optWithDefault('defaultTypes'), optWithDefault('customTypes')),

useIntKeysAsArrayIndex: optWithDefault('useIntKeysAsArrayIndex')
      };
    },

// Given a string, apply the type or the relevant "parse" options, to return the parsed value
    parseValue: function(valStr, inputName, type, opts) {
      var f, parsedVal;
      f = $.serializeJSON;
      parsedVal = valStr; // if no parsing is needed, the returned value will be the same

if (opts.typeFunctions && type && opts.typeFunctions[type]) { // use a type if available
        parsedVal = opts.typeFunctions[type](valStr);
      } else if (opts.parseNumbers  && f.isNumeric(valStr)) { // auto: number
        parsedVal = Number(valStr);
      } else if (opts.parseBooleans && (valStr === "true" || valStr === "false")) { // auto: boolean
        parsedVal = (valStr === "true");
      } else if (opts.parseNulls    && valStr == "null") { // auto: null
        parsedVal = null;
      } else if (opts.typeFunctions && opts.typeFunctions["string"]) { // make sure to apply :string type if it was re-defined
        parsedVal = opts.typeFunctions["string"](valStr);
      }
      
      // Custom parse function: apply after parsing options, unless there's an explicit type.
      if (opts.parseWithFunction && !type) {
        parsedVal = opts.parseWithFunction(parsedVal, inputName);
      }

return parsedVal;
    },

isObject:          function(obj) { return obj === Object(obj); }, // is it an Object?
    isUndefined:       function(obj) { return obj === void 0; }, // safe check for undefined values
    isValidArrayIndex: function(val) { return /^[0-9]+$/.test(String(val)); }, // 1,2,3,4 ... are valid array indexes
    isNumeric:         function(obj) { return obj - parseFloat(obj) >= 0; }, // taken from jQuery.isNumeric implementation. Not using jQuery.isNumeric to support old jQuery and Zepto versions

optionKeys: function(obj) { if (Object.keys) { return Object.keys(obj); } else { var key, keys = []; for(key in obj){ keys.push(key); } return keys;} }, // polyfill Object.keys to get option keys in IE<9

// Fill the formAsArray object with values for the unchecked checkbox inputs,
    // using the same format as the jquery.serializeArray function.
    // The value of the unchecked values is determined from the opts.checkboxUncheckedValue
    // and/or the data-unchecked-value attribute of the inputs.
    readCheckboxUncheckedValues: function (formAsArray, opts, $form) {
      var selector, $uncheckedCheckboxes, $el, uncheckedValue, f, name;
      if (opts == null) { opts = {}; }
      f = $.serializeJSON;

selector = 'input[type=checkbox][name]:not(:checked):not([disabled])';
      $uncheckedCheckboxes = $form.find(selector).add($form.filter(selector));
      $uncheckedCheckboxes.each(function (i, el) {
        // Check data attr first, then the option
        $el = $(el);
        uncheckedValue = $el.attr('data-unchecked-value');
        if (uncheckedValue == null) {
          uncheckedValue = opts.checkboxUncheckedValue;
        }

// If there's an uncheckedValue, push it into the serialized formAsArray
        if (uncheckedValue != null) {
          if (el.name && el.name.indexOf("[][") !== -1) { // identify a non-supported
            throw new Error("serializeJSON ERROR: checkbox unchecked values are not supported on nested arrays of objects like '"+el.name+"'. See https://github.com/marioizquierdo/jquery.serializeJSON/issues/67");
          }
          formAsArray.push({name: el.name, value: uncheckedValue});
        }
      });
    },

// Returns and object with properties {name_without_type, type} from a given name.
    // The type is null if none specified. Example:
    //   "foo"           =>  {nameWithNoType: "foo",      type:  null}
    //   "foo:boolean"   =>  {nameWithNoType: "foo",      type: "boolean"}
    //   "foo[bar]:null" =>  {nameWithNoType: "foo[bar]", type: "null"}
    extractTypeAndNameWithNoType: function(name) {
      var match;
      if (match = name.match(/(.*):([^:]+)$/)) {
        return {nameWithNoType: match[1], type: match[2]};
      } else {
        return {nameWithNoType: name, type: null};
      }
    },

// Check if this input should be skipped when it has a falsy value,
    // depending on the options to skip values by name or type, and the data-skip-falsy attribute.
    shouldSkipFalsy: function($form, name, nameWithNoType, type, opts) {
      var f = $.serializeJSON;
      
      var skipFromDataAttr = f.attrFromInputWithName($form, name, 'data-skip-falsy');
      if (skipFromDataAttr != null) {
        return skipFromDataAttr !== 'false'; // any value is true, except if explicitly using 'false' 
      }

var optForFields = opts.skipFalsyValuesForFields;
      if (optForFields && (optForFields.indexOf(nameWithNoType) !== -1 || optForFields.indexOf(name) !== -1)) {
        return true;
      }
      
      var optForTypes = opts.skipFalsyValuesForTypes;
      if (type == null) type = 'string'; // assume fields with no type are targeted as string
      if (optForTypes && optForTypes.indexOf(type) !== -1) {
        return true
      }

return false;
    },

// Finds the first input in $form with this name, and get the given attr from it.
    // Returns undefined if no input or no attribute was found.
    attrFromInputWithName: function($form, name, attrName) {
      var escapedName, selector, $input, attrValue;
      escapedName = name.replace(/(:|\.|\[|\]|\s)/g,'\\$1'); // every non-standard character need to be escaped by \\
      selector = '[name="' + escapedName + '"]';
      $input = $form.find(selector).add($form.filter(selector)); // NOTE: this returns only the first $input element if multiple are matched with the same name (i.e. an "array[]"). So, arrays with different element types specified through the data-value-type attr is not supported.
      return $input.attr(attrName);
    },

// Raise an error if the type is not recognized.
    validateType: function(name, type, opts) {
      var validTypes, f;
      f = $.serializeJSON;
      validTypes = f.optionKeys(opts ? opts.typeFunctions : f.defaultOptions.defaultTypes);
      if (!type || validTypes.indexOf(type) !== -1) {
        return true;
      } else {
        throw new Error("serializeJSON ERROR: Invalid type " + type + " found in input name '" + name + "', please use one of " + validTypes.join(', '));
      }
    },

// Split the input name in programatically readable keys.
    // Examples:
    // "foo"              => ['foo']
    // "[foo]"            => ['foo']
    // "foo[inn][bar]"    => ['foo', 'inn', 'bar']
    // "foo[inn[bar]]"    => ['foo', 'inn', 'bar']
    // "foo[inn][arr][0]" => ['foo', 'inn', 'arr', '0']
    // "arr[][val]"       => ['arr', '', 'val']
    splitInputNameIntoKeysArray: function(nameWithNoType) {
      var keys, f;
      f = $.serializeJSON;
      keys = nameWithNoType.split('['); // split string into array
      keys = $.map(keys, function (key) { return key.replace(/\]/g, ''); }); // remove closing brackets
      if (keys[0] === '') { keys.shift(); } // ensure no opening bracket ("[foo][inn]" should be same as "foo[inn]")
      return keys;
    },

// Set a value in an object or array, using multiple keys to set in a nested object or array:
    //
    // deepSet(obj, ['foo'], v)               // obj['foo'] = v
    // deepSet(obj, ['foo', 'inn'], v)        // obj['foo']['inn'] = v // Create the inner obj['foo'] object, if needed
    // deepSet(obj, ['foo', 'inn', '123'], v) // obj['foo']['arr']['123'] = v //
    //
    // deepSet(obj, ['0'], v)                                   // obj['0'] = v
    // deepSet(arr, ['0'], v, {useIntKeysAsArrayIndex: true})   // arr[0] = v
    // deepSet(arr, [''], v)                                    // arr.push(v)
    // deepSet(obj, ['arr', ''], v)                             // obj['arr'].push(v)
    //
    // arr = [];
    // deepSet(arr, ['', v]          // arr => [v]
    // deepSet(arr, ['', 'foo'], v)  // arr => [v, {foo: v}]
    // deepSet(arr, ['', 'bar'], v)  // arr => [v, {foo: v, bar: v}]
    // deepSet(arr, ['', 'bar'], v)  // arr => [v, {foo: v, bar: v}, {bar: v}]
    //
    deepSet: function (o, keys, value, opts) {
      var key, nextKey, tail, lastIdx, lastVal, f;
      if (opts == null) { opts = {}; }
      f = $.serializeJSON;
      if (f.isUndefined(o)) { throw new Error("ArgumentError: param 'o' expected to be an object or array, found undefined"); }
      if (!keys || keys.length === 0) { throw new Error("ArgumentError: param 'keys' expected to be an array with least one element"); }

key = keys[0];

// Only one key, then it's not a deepSet, just assign the value.
      if (keys.length === 1) {
        if (key === '') {
          o.push(value); // '' is used to push values into the array (assume o is an array)
        } else {
          o[key] = value; // other keys can be used as object keys or array indexes
        }

// With more keys is a deepSet. Apply recursively.
      } else {
        nextKey = keys[1];

// '' is used to push values into the array,
        // with nextKey, set the value into the same object, in object[nextKey].
        // Covers the case of ['', 'foo'] and ['', 'var'] to push the object {foo, var}, and the case of nested arrays.
        if (key === '') {
          lastIdx = o.length - 1; // asume o is array
          lastVal = o[lastIdx];
          if (f.isObject(lastVal) && (f.isUndefined(lastVal[nextKey]) || keys.length > 2)) { // if nextKey is not present in the last object element, or there are more keys to deep set
            key = lastIdx; // then set the new value in the same object element
          } else {
            key = lastIdx + 1; // otherwise, point to set the next index in the array
          }
        }

// '' is used to push values into the array "array[]"
        if (nextKey === '') {
          if (f.isUndefined(o[key]) || !$.isArray(o[key])) {
            o[key] = []; // define (or override) as array to push values
          }
        } else {
          if (opts.useIntKeysAsArrayIndex && f.isValidArrayIndex(nextKey)) { // if 1, 2, 3 ... then use an array, where nextKey is the index
            if (f.isUndefined(o[key]) || !$.isArray(o[key])) {
              o[key] = []; // define (or override) as array, to insert values using int keys as array indexes
            }
          } else { // for anything else, use an object, where nextKey is going to be the attribute name
            if (f.isUndefined(o[key]) || !f.isObject(o[key])) {
              o[key] = {}; // define (or override) as object, to set nested properties
            }
          }
        }

// Recursively set the inner object
        tail = keys.slice(1);
        f.deepSet(o[key], tail, value, opts);
      }
    }

};

}));