salix/loopback/util/log.js

106 lines
3.0 KiB
JavaScript

/**
* Translates to a readable values
* @param {Object} instance - The model or context instance
* @param {Object} changes - Object containing changes
*/
exports.translateValues = async(instance, changes, options = {}) => {
const models = instance.app.models;
function getRelation(instance, property) {
const relations = instance.definition.settings.relations;
for (let relationName in relations) {
const relation = relations[relationName];
if (relation.foreignKey == property)
return relation;
}
return;
}
function getValue(rawData) {
const row = JSON.parse(JSON.stringify(rawData));
for (column in row)
return row[column];
}
function formatDate(date) {
return new Intl.DateTimeFormat('es', {
year: 'numeric',
month: 'numeric',
day: 'numeric',
hour: '2-digit',
minute: '2-digit',
second: '2-digit'
}).format(date);
}
if (changes instanceof instance)
changes = changes.__data;
const properties = Object.assign({}, changes);
for (let property in properties) {
const firstChar = property.substring(0, 1);
const isPrivate = firstChar == '$';
if (isPrivate) {
delete properties[property];
continue;
}
const relation = getRelation(instance, property);
const value = properties[property];
const hasValue = value != null && value != undefined;
let finalValue = value;
if (relation && hasValue) {
let fieldsToShow = ['nickname', 'name', 'code', 'description'];
const modelName = relation.model;
const model = models[modelName];
const log = model.definition.settings.log;
if (log && log.showField)
fieldsToShow = [log.showField];
const row = await model.findById(value, {
fields: fieldsToShow
}, options);
const newValue = getValue(row);
if (newValue) finalValue = newValue;
}
if (finalValue instanceof Date)
finalValue = formatDate(finalValue);
properties[property] = finalValue;
}
return properties;
};
/**
* Returns the changes between two objects
* @param {Object} original - Original object
* @param {Object} changes - New changes
* @return {Object} Old and new values
*/
exports.getChanges = (original, changes) => {
const oldChanges = {};
const newChanges = {};
for (let property in changes) {
const firstChar = property.substring(0, 1);
const isPrivate = firstChar == '$';
if (isPrivate) return;
if (changes[property] != original[property]) {
newChanges[property] = changes[property];
if (original[property] != undefined)
oldChanges[property] = original[property];
}
}
return {
old: oldChanges,
new: newChanges
};
};