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| var _ = require('lodash');
var FieldType = require('../Type');
var util = require('util');
var utils = require('keystone-utils');
/**
* Select FieldType Constructor
* @extends Field
* @api public
*/
function select (list, path, options) {
this.ui = options.ui || 'select';
this.numeric = options.numeric ? true : false;
this._nativeType = (options.numeric) ? Number : String;
this._underscoreMethods = ['format', 'pluck'];
this._properties = ['ops', 'numeric'];
if (typeof options.options === 'string') {
options.options = options.options.split(',');
}
if (!Array.isArray(options.options)) {
throw new Error('Select fields require an options array.');
}
this.ops = options.options.map(function (i) {
var op = _.isString(i) ? { value: i.trim(), label: utils.keyToLabel(i) } : i;
Iif (!_.isObject(op)) {
op = { label: '' + i, value: '' + i };
}
Iif (options.numeric && !_.isNumber(op.value)) {
op.value = Number(op.value);
}
return op;
});
// undefined options.emptyOption defaults to true
Eif (options.emptyOption === undefined) {
options.emptyOption = true;
}
// ensure this.emptyOption is a boolean
this.emptyOption = options.emptyOption ? true : false;
// cached maps for options, labels and values
this.map = utils.optionsMap(this.ops);
this.labels = utils.optionsMap(this.ops, 'label');
this.values = _.map(this.ops, 'value');
select.super_.call(this, list, path, options);
}
util.inherits(select, FieldType);
/**
* Registers the field on the List's Mongoose Schema.
*
* Adds a virtual for accessing the label of the selected value,
* and statics to the Schema for converting a value to a label,
* and retrieving all of the defined options.
*/
select.prototype.addToSchema = function () {
var field = this;
var schema = this.list.schema;
this.paths = {
data: this.options.dataPath || this._path.append('Data'),
label: this.options.labelPath || this._path.append('Label'),
options: this.options.optionsPath || this._path.append('Options'),
map: this.options.optionsMapPath || this._path.append('OptionsMap'),
};
schema.path(this.path, _.defaults({
type: this._nativeType,
enum: this.values,
set: function (val) {
return (val === '' || val === null || val === false) ? undefined : val;
},
}, this.options));
schema.virtual(this.paths.data).get(function () {
return field.map[this.get(field.path)];
});
schema.virtual(this.paths.label).get(function () {
return field.labels[this.get(field.path)];
});
schema.virtual(this.paths.options).get(function () {
return field.ops;
});
schema.virtual(this.paths.map).get(function () {
return field.map;
});
this.bindUnderscoreMethods();
};
/**
* Returns a key value from the selected option
*/
select.prototype.pluck = function (item, property, _default) {
var option = item.get(this.paths.data);
return (option) ? option[property] : _default;
};
/**
* Retrieves a shallow clone of the options array
*/
select.prototype.cloneOps = function () {
return _.map(this.ops, _.clone);
};
/**
* Retrieves a shallow clone of the options map
*/
select.prototype.cloneMap = function () {
return utils.optionsMap(this.ops, true);
};
/**
* Add filters to a query
*/
select.prototype.addFilterToQuery = function (filter, query) {
query = query || {};
if (!Array.isArray(filter.value)) {
if (filter.value) {
filter.value = [filter.value];
} else {
filter.value = [];
}
}
if (filter.value.length > 1) {
query[this.path] = (filter.inverted) ? { $nin: filter.value } : { $in: filter.value };
} else if (filter.value.length === 1) {
query[this.path] = (filter.inverted) ? { $ne: filter.value[0] } : filter.value[0];
} else {
query[this.path] = (filter.inverted) ? { $nin: ['', null] } : { $in: ['', null] };
}
return query;
};
/**
* Asynchronously confirms that the provided value is valid
*/
select.prototype.validateInput = function (data, callback) {
var value = this.getValueFromData(data);
if (typeof value === 'string' && this.numeric) {
value = utils.number(value);
}
var result = value === undefined || value === null || value === '' || (value in this.map) ? true : false;
utils.defer(callback, result);
};
/**
* Asynchronously confirms that the provided value is present
*/
select.prototype.validateRequiredInput = function (item, data, callback) {
var value = this.getValueFromData(data);
var result = false;
if (value === undefined) {
if (item.get(this.path)) {
result = true;
}
} else if (value) {
Eif (value !== '') {
// This is already checkind in validateInput, but it doesn't hurt
// to check again for security
Eif (value in this.map) {
result = true;
}
}
}
utils.defer(callback, result);
};
/**
* Validates that a valid option has been provided in a data object
*
* Deprecated
*/
select.prototype.inputIsValid = function (data, required, item) {
if (data[this.path]) {
return (data[this.path] in this.map) ? true : false;
} else {
return (!required || (!(this.path in data) && item && item.get(this.path))) ? true : false;
}
};
/**
* Formats the field value
*/
select.prototype.format = function (item) {
return this.labels[item.get(this.path)] || '';
};
/* Export Field Type */
module.exports = select;
|