Having issues creating associations for create sequelize queries - javascript

I am having issues creating associations in my code on sequelize 6. I will try to be as clear as I can but since its a very large project for my company i cant share all the code.
but basically here is what is happening.
I am trying to learn the property way to associate my models so when I need to use them in other files, they have the associations saved.
As it stands, right now, this is a small snippet of some reduced example code
const createA = (sequelize, payload) => {
sequelize.models.A.create(payload,
{
include: [
sequelize.models.B
// ....
]
})
}
Model B will return the error Cannot read properties of undefined (reading 'name')", if I remove the include, it works fine (although the associated data is not created). getting queries are ok, creating/save are the issue.
So I looked into the different ways of saving associations, and found multiple ways all over stack overflow the course of 5 years. (a lot of these solutions are deprecated or no longer relevant)
One way is storing it into a db.sequelize export, so the modesl get there own object and not part of the models property
One way was saving each model returned from the define method into an object,
so imagine this
const a = A.hasOne(B, { foreignKey: 'bId' });
const a.b = B.belongsTo(A);
but this is an issue with very large and ocmplex associations (i tried this and it gets hairy but works BUT very unstable)
I even tried this example with no luck => https://github.com/sequelize/express-example/ (I will show this code below)
I also tried to make the class define model methods have an associate static function and associate everything during initialization (I can't find the example at the momentbut i seen it around)
Now our code is not exactly the same as this and i cant post all of it, but the format is basically the same, here is what we have in a file
const factory = () => {
let instance = null;
try {
instance = createInstance(); // <=========== this sets up the instance and returns it via new Sequelize();
defineModelsAndAssociations(instance); // <====here is my entry poiunt for all the different ways I tried definging and associating models
return instance;
} catch (error) { /* ... */ }
};
module.exports = factory();
here is how I tried the express example
const getModels = () => {
return [
require('../../models/definitions/A'),
require('../../models/definitions/B'),
// Add more models here...
];
}
const setUpModelsWithInstance = (instance, modelDefiners) => {
for (const modelDefiner of modelDefiners) {
modelDefiner(instance);
}
}
const associateModels = instance => {
const {
A,
B,
} = instance.models;
A.hasOne(B, { foreignKey: 'bId' });
B.belongsTo(A);
}
const defineModelsAndAssociations = instance => {
const modelDefiners = getModels();
setUpModelsWithInstance(instance, modelDefiners);
associateModels(instance);
}
module.exports = {
defineModelsAndAssociations,
}
but even with this and every other attempt, when I try the createA method/query i listed above
would anyone have any idea? thanks!

Related

How to create and return an array of objects using protractor page object model design and promises

I'm creating a page object model and one of the properties is all the users from a table. The table has a few columns so I'd like to parse that table and create a user object for each row, then return that set to then be used in tests. So far, this is what that property of my page object looks like:
users: {
get: function() {
let userRecords = [];
var users = element.all(by.repeater('user in users')).each(function(tr, index) {
let user = {
name: tr.element(by.css('td:nth-child(2)')).getText().then(text => {return text;}),
role: tr.element(by.css('td:nth-child(3)')).getText().then(text => {expect(text).toBeTruthy();}),
status: tr.element(by.css('td:nth-child(4)')).getText().then(text => {expect(text).toBeTruthy();}),
//actionsButton: tr.element(by.css('btn btn-default'))
};
userRecords += user;
}).then(userRecords => {return userRecords});
return userRecords;
}
},
Through trial and error I encounter one of two outcomes when just trying to print to screen each element of userRecords:
each element prints as undefined or
userRecords is not defined.
Just to reiterate, I'm simply trying to build an array that holds each user as an object to then be able to iterate / filter on that set in my tests.
Given the approach I'm taking, what's the ideal way to construct this user array and resolve the promises?
Edit: it's worth noting that if I do a console.log() within each of the getText().then() statements, it does print the correct data from the table. So, I do know that it's reading the table correctly.
I'd go with a method that returns json, and would make it async
users: async function() {
let userRecords = [];
var users = element.all(by.repeater('user in users'));
for (let i = 0; i < await users.count(); i++) {
let tr = users.get(i);
let user = {
name: await tr.element(by.css('td:nth-child(2)')).getText(),
role: await tr.element(by.css('td:nth-child(3)')).getText(),
status: await tr.element(by.css('td:nth-child(4)')).getText()
};
userRecords.push()
}
return userRecords;
},
and then use:
console.log(
JSON.stringify(
await constructorName.users()
)
)
should be as simple as that. Note, I didn't test the code, but I did use the approach in my experience. So it may require some minor modifications
In general, try to avoid .then - async/await is easier to use, .each - go with for loop instead. Also userRecords += user; doesn't do what you think it does (though I may be wrong here)

ReactiveX filtering on observable multiple times and merging

I have a problem creating the following observable.
I want it to receive a predefined array of values
And I want to filter by different things, and be able to work with these as individual observables.
And then when it comes time to merge these filtered observables, I want to preserve the order from the original one
//Not sure the share is necessary, just thought it would tie it all together
const input$ = Observable.from([0,1,0,1]).share();
const ones$ = input$.filter(n => n == 1);
const zeroes$ = input$.filter(n => n == 0);
const zeroesChanged$ = zeroes$.mapTo(2);
const onesChanged$ = ones$.mapTo(3);
const allValues$ = Observable.merge(onesChanged$,zeroesChanged$);
allValues$.subscribe(n => console.log(n));
//Outputs 3,3,2,2
//Expected output 3,2,3,2
EDIT: I am sorry I was not specific enough in my question.
I am using a library called cycleJS, which separates sideeffects into drivers.
So what I am doing in my cycle is this
export function socketCycle({ SOCKETIO }) {
const serverConnect$ = SOCKETIO.get('connect').map(serverDidConnect);
const serverDisconnect$ = SOCKETIO.get('disconnect').map(serverDidDisconnect);
const serverFailedToConnect$ = SOCKETIO.get('connect_failed').map(serverFailedToConnect);
return { ACTION: Observable.merge(serverConnect$, serverDisconnect$, serverFailedToConnect$) };
}
Now my problem arose when I wanted to write a test for it. I tried with the following which worked in the wrong matter(using jest)
const inputConnect$ = Observable.from(['connect', 'disconnect', 'connect', 'disconnect']).share();
const expectedOutput$ = Observable.from([
serverDidConnect(),
serverDidDisconnect(),
serverDidConnect(),
serverDidDisconnect(),
]);
const socketIOMock = {
get: (evt) => {
if (evt === 'connect') {
return inputConnect$.filter(s => s === 'connect');
} else if (evt === 'disconnect') {
return inputConnect$.filter(s => s === 'disconnect');
}
return Observable.empty();
},
};
const { ACTION } = socketCycle({ SOCKETIO: socketIOMock });
Observable.zip(ACTION, expectedOutput$).subscribe(
([output, expectedOutput]) => { expect(output).toEqual(expectedOutput); },
(error) => { expect(true).toBe(false) },
() => { done(); },
);
Maybe there is another way I can go about testing it?
When stream is partitioned, the timing guarantees between elements in different daughter streams is actually destroyed. In particular, even if connect events always come before disconnect events at the event source, the events of the connect Observable won't always come before their corresponding events items in the disconnect Observable. At normal timescales, this race condition probably quite rare but dangerous nonetheless, and this test shows the worst case.
The good news is that your function as shown is just a mapper, between events and results from handlers. If you can continue this model generally over event types, then you can even encode the mapping in a plain data structure, which benefits expressiveness:
const event_handlers = new Map({
'connect': serverDidConnect,
'disconnect': serverDidDisconnect,
'connect_failed': serverFailedToConnect
});
const ACTION = input$.map(event_handlers.get.bind(event_handlers));
Caveat: if you were reducing over the daughter streams (or otherwise considering previous values, like with debounceTime), the refactor is not so straightforward, and would also depend on a new definition of "preserve order". Much of the time, it would still be feasible to reproduce with reduce + a more complicated accumulator.
Below code might be able to give you the desire result, but it's no need to use rxjs to operate array IMHO
Rx.Observable.combineLatest(
Rx.Observable.from([0,0,0]),
Rx.Observable.from([1,1,1])
).flatMap(value=>Rx.Observable.from(value))
.subscribe(console.log)

How to collect and return aggregated data as an Array from a table in Protractor?

I am trying to aggregate a list of dates from a data table, written in Angular, in a Protractor test. I'm doing the aggregation from a PageObject class that is called in the Protractor test. I know that my code is successfully grabbing the text I want, but when I try to console.log the returned array, I get an empty array. I'm still new to Javascript/Typescript, Angular, and Protractor and this may be a result of my newness to the asynchronous nature of this development environment.
Code is as follows,
The PageObject SpecMapper class with method:
import { browser, element, by } from 'protractor';
export class SpecMapperPage {
getImportDateSubmittedColumnValues() {
let stringDatesArray: Array<string> = [];
// currently this css selector gets rows in both import and export tables
// TODO: get better identifiers on the import and export tables and columns
element.all(by.css('md-card-content tbody tr.ng-tns-c3-0')).each(function(row, index){
// check outerHTML for presence of "unclickable", the rows in the export table
row.getAttribute('outerHTML').then(function(outerHTML:string) {
// specifically look for rows without unclickable
if(outerHTML.indexOf("unclickable") < 0){
// grab the columns and get the third column, where the date submitted field is
// TODO: get better identifiers on the import and export columns
row.all(by.css("td.ng-tns-c3-0")).get(2).getText().then(function(text:string) {
stringDatesArray.push(text);
});
}
});
});
return stringDatesArray;
}
}
I know it's not the prettiest code, but it's temporary place holder while my devs make me better attributes/classes/ids to grab my variables. Key things to note is that I create a string Array to hold the values I consider relevant to be returned when the method is finished.
I used WebStorm and put a breakpoint at the stringDatesArray.push(text) and return stringDatesArray lines. The first line shows that the text variable has a string variable that I'm looking for and is successfully getting pushed. I see the success in debug mode as I can see the stringDatesArray and see the values in it. The second line though, the array return, shows that the local variable stringDatesArray is empty. This is echoed in the following code when I try to console.log the array:
The Protractor run Spec class with my test in it:
import { SpecMapperPage } from "./app.po";
import {browser, ExpectedConditions} from "protractor";
describe('spec mapper app', () => {
let page: SpecMapperPage;
let PROJECT_ID: string = '57';
let PROJECT_NAME: string = 'DO NOT DELETE - AUTOMATED TESTING PROJECT';
beforeEach(() => {
page = new SpecMapperPage();
});
describe('import/export page', () => {
it('verify sort order is desc', () => {
browser.waitForAngularEnabled(false);
// Step 1: Launch Map Data from Dashboard
page.navigateTo(PROJECT_ID);
browser.driver.sleep(5000).then(() => {
// Verify: Mapping Screen displays
// Verify on the specmapper page by checking the breadcrumbs
expect(page.getProjectNameBreadCrumbText()).toContain(PROJECT_NAME);
expect(page.getProjectMapperBreadCrumbText()).toEqual("MAPPER");
// Verify: Verify Latest Submitted Date is displayed at the top
// Verify: Verify the Submitted Date column is in descending order
console.log(page.getImportDateSubmittedColumnValues());
});
});
});
});
I acknowledge that this code is not actively using the niceties of Protractor, there's a known issue with our app that will not be addressed for a couple of months, so I am accessing the driver directly 99% of the time.
You'll note that I call the method I posted above as the very last line in the browser.driver.sleep().then() clause, page.getImportDateSubmittedColumnValues().
I thought maybe I was running into asynchronous issues with the call being done before the page was loaded, thus I put it in the .then() clause; but learned with debugging that was not the case. This code should work once I have the array returning properly though.
The console.log is printing an empty [] array. That is synonymous with the results I saw when debugging the above method directly in the PageObject SpecMapper class. I wish to do some verification that the strings are returned properly formatted, and then I'm going to do some date order comparisons. I feel like returning an array of data retrieved from a page is not an unusual request, but I can't seem to find a good way to Google what I'm trying to do.
My apologies if I am hitting some very obvious roadblock, I'm still learning the nuances of Typescript/Angular/Protractor. Thank you for your consideration!
My attempted to used collated promises seemed promising, but fell through on execution.
My Updated PageObject SpecMapper Class
import {browser, element, by, protractor} from 'protractor';
export class SpecMapperPage {
getImportDateSubmittedColumnValues() {
let promisesArray = [];
let stringDatesArray: Array<string> = [];
// This CSS selector grabs the import table and any cells with the label .created-date
element.all(by.css('.import-component .created-date')).each(function(cell, index) {
// cell.getText().then(function(text:string) {
// console.log(text);
// });
promisesArray.push(cell.getText());
});
return protractor.promise.all(promisesArray).then(function(results) {
for(let result of results) {
stringDatesArray.push(result);
}
return stringDatesArray;
});
}
}
My Updated Spec test Using The Updated SpecMapper PO Class
import { SpecMapperPage } from "./specMapper.po";
import {browser, ExpectedConditions} from "protractor";
describe('spec mapper app', () => {
let page: SpecMapperPage;
let PROJECT_ID: string = '57';
let PROJECT_NAME: string = 'DO NOT DELETE - AUTOMATED TESTING PROJECT';
beforeEach(() => {
page = new SpecMapperPage();
});
describe('import/export page', () => {
it('TC2963: ImportComponentGrid_ShouldDefaultSortBySubmittedDateInDescendingOrder_WhenPageIsLoaded', () => {
browser.waitForAngularEnabled(false);
// Step 1: Launch Map Data from Dashboard
page.navigateTo(PROJECT_ID);
browser.driver.sleep(5000).then(() => {
// Verify: Mapping Screen displays
// Verify on the specmapper page by checking the breadcrumbs
expect(page.getProjectNameBreadCrumbText()).toContain(PROJECT_NAME);
expect(page.getProjectMapperBreadCrumbText()).toEqual("MAPPER");
// Verify: Verify Latest Submitted Date is displayed at the top
// Verify: Verify the Submitted Date column is in descending order
page.getImportDateSubmittedColumnValues().then(function(results) {
for(let value of results) {
console.log("a value is: " + value);
}
});
});
});
});
});
When I breakpoint in the PO class at the return stringDatesArray; line, I have the following variables in my differing scopes. Note that the promisesArray has 3 objects, but the results array going into the protractor.promise.all( block has 0 objects. I'm not sure what my disconnect is. :/
I think I'm running into a scopes problem that I am having issues understanding. You'll note the commented out promise resolution on the getText(), and this was my POC proving that I am getting the string values I'm expecting, so I'm not sure why it's not working in the Promise Array structure presented as a solution below.
Only other related question that I could find has to do with grabbing a particular row of a table, not specifically aggregating the data to be returned for test verification in Protractor. You can find it here if you're interested.
As you've alluded to your issue is caused by the console.log returning the value of the variable before its actually been populated.
I've taken a snippet from this answer which should allow you to solve it: Is there a way to resolve multiple promises with Protractor?
var x = element(by.id('x')).sendKeys('xxx');
var y = element(by.id('y')).sendKeys('yyy');
var z = element(by.id('z')).sendKeys('zzz');
myFun(x,y,z);
//isEnabled() is contained in the expect() function, so it'll wait for
// myFun() promise to be fulfilled
expect(element(by.id('myButton')).isEnabled()).toBe(true);
// in a common function library
function myFun(Xel,Yel,Zel) {
return protractor.promise.all([Xel,Yel,Zel]).then(function(results){
var xText = results[0];
var yText = results[1];
var zText = results[2];
});
}
So in your code it would be something like
getImportDateSubmittedColumnValues() {
let promisesArray = [];
let stringDatesArray: Array<string> = [];
// currently this css selector gets rows in both import and export tables
// TODO: get better identifiers on the import and export tables and columns
element.all(by.css('md-card-content tbody tr.ng-tns-c3-0')).each(function(row, index){
// check outerHTML for presence of "unclickable", the rows in the export table
row.getAttribute('outerHTML').then(function(outerHTML:string) {
// specifically look for rows without unclickable
if(outerHTML.indexOf("unclickable") < 0){
// grab the columns and get the third column, where the date submitted field is
// TODO: get better identifiers on the import and export columns
promisesArray.push(row.all(by.css("td.ng-tns-c3-0")).get(2).getText());
}
});
});
return protractor.promise.all(promisesArray).then(function(results){
// In here you'll have access to the results
});
}
Theres quite a few different ways you could do it. You could process the data in that method at the end or I think you could return the array within that "then", and access it like so:
page.getImportDateSubmittedColumnValues().then((res) =>{
//And then here you will have access to the array
})
I don't do the Typescript but if you're just looking to get an array of locator texts back from your method, something resembling this should work...
getImportDateSubmittedColumnValues() {
let stringDatesArray: Array<string> = [];
$$('.import-component .created-date').each((cell, index) => {
cell.getText().then(text => {
stringDatesArray.push(text);
});
}).then(() => {
return stringDatesArray;
});
}
The answer ended up related to the answer posted on How do I return the response from an asynchronous call?
The final PageObject class function:
import {browser, element, by, protractor} from 'protractor';
export class SpecMapperPage {
getImportDateSubmittedColumnValues() {
let stringDatesArray: Array<string> = [];
let promisesArray = [];
// return a promise promising that stringDatesArray will have an array of dates
return new Promise((resolve, reject) => {
// This CSS selector grabs the import table and any cells with the label .created-date
element.all(by.css('.import-component .created-date')).map((cell) => {
// Gather all the getText's we want the text from
promisesArray.push(cell.getText());
}).then(() => {
protractor.promise.all(promisesArray).then((results) => {
// Resolve the getText's values and shove into array we want to return
for(let result of results) {
stringDatesArray.push(result);
}
}).then(() => {
// Set the filled array as the resolution to the returned promise
resolve(stringDatesArray);
});
});
});
}
}
The final test class:
import { SpecMapperPage } from "./specMapper.po";
import {browser, ExpectedConditions} from "protractor";
describe('spec mapper app', () => {
let page: SpecMapperPage;
let PROJECT_ID: string = '57';
let PROJECT_NAME: string = 'DO NOT DELETE - AUTOMATED TESTING PROJECT';
beforeEach(() => {
page = new SpecMapperPage();
});
describe('import/export page', () => {
it('TC2963: ImportComponentGrid_ShouldDefaultSortBySubmittedDateInDescendingOrder_WhenPageIsLoaded', () => {
browser.waitForAngularEnabled(false);
// Step 1: Launch Map Data from Dashboard
page.navigateTo(PROJECT_ID);
browser.driver.sleep(5000).then(() => {
// Verify: Mapping Screen displays
// Verify on the specmapper page by checking the breadcrumbs
expect(page.getProjectNameBreadCrumbText()).toContain(PROJECT_NAME);
expect(page.getProjectMapperBreadCrumbText()).toEqual("MAPPER");
// Verify: Verify Latest Submitted Date is displayed at the top
// Verify: Verify the Submitted Date column is in descending order
page.getImportDateSubmittedColumnValues().then((results) => {
console.log(results);
});
});
});
});
});
The biggest thing was waiting for the different calls to get done running and then waiting for the stringDataArray to be filled. That required the promise(resolve,reject) structure I found in the SO post noted above. I ended up using the lambda (()=>{}) function calls instead of declared (function(){}) for a cleaner look, the method works the same either way. None of the other proposed solutions successfully propagated the array of strings back to my test. I'm working in Typescript, with Protractor.

Breeze Partial initializer

I have a Single Page Application that is working pretty well so far but I have run into an issue I am unable to figure out. I am using breeze to populate a list of projects to be displayed in a table. There is way more info than what I actually need so I am doing a projection on the data. I want to add a knockout computed onto the entity. So to accomplish this I registered and entity constructor like so...
metadataStore.registerEntityTypeCtor(entityNames.project, function () { this.isPartial = false; }, initializeProject);
The initializeProject function uses some of the values in the project to determine what the values should be for the computed. For example if the Project.Type == "P" then the rowClass should = "Red".
The problem I am having is that all the properties of Project are null except for the ProjNum which happens to be the key. I believe the issue is because I am doing the projection because I have registered other initializers for other types and they work just fine. Is there a way to make this work?
EDIT: I thought I would just add a little more detail for clarification. The values of all the properties are set to knockout observables, when I interrogate the properties using the javascript debugger in Chrome the _latestValue of any of the properties is null. The only property that is set is the ProjNum which is also the entity key.
EDIT2: Here is the client side code that does the projection
var getProjectPartials = function (projectObservable, username, forceRemote) {
var p1 = new breeze.Predicate("ProjManager", "==", username);
var p2 = new breeze.Predicate("ApprovalStatus", "!=", "X");
var p3 = new breeze.Predicate("ApprovalStatus", "!=", "C");
var select = 'ProjNum,Title,Type,ApprovalStatus,CurrentStep,StartDate,ProjTargetDate,CurTargDate';
var isQaUser = cookies.getCookie("IsQaUser");
if (isQaUser == "True") {
p1 = new breeze.Predicate("QAManager", "==", username);
select = select + ',QAManager';
} else {
select = select + ',ProjManager';
}
var query = entityQuery
.from('Projects')
.where(p1.and(p2).and(p3))
.select(select);
if (!forceRemote) {
var p = getLocal(query);
if (p.length > 1) {
projectObservable(p);
return Q.resolve();
}
}
return manager.executeQuery(query).then(querySucceeded).fail(queryFailed);
function querySucceeded(data) {
var list = partialMapper.mapDtosToEntities(
manager,
data.results,
model.entityNames.project,
'ProjNum'
);
if (projectObservable) {
projectObservable(list);
}
log('Retrieved projects using breeze', data, true);
}
};
and the code for the partialMapper.mapDtosToEntities function.
var defaultExtension = { isPartial: true };
function mapDtosToEntities(manager,dtos,entityName,keyName,extendWith) {
return dtos.map(dtoToEntityMapper);
function dtoToEntityMapper(dto) {
var keyValue = dto[keyName];
var entity = manager.getEntityByKey(entityName, keyValue);
if (!entity) {
extendWith = $.extend({}, extendWith || defaultExtension);
extendWith[keyName] = keyValue;
entity = manager.createEntity(entityName, extendWith);
}
mapToEntity(entity, dto);
entity.entityAspect.setUnchanged();
return entity;
}
function mapToEntity(entity, dto) {
for (var prop in dto) {
if (dto.hasOwnProperty(prop)) {
entity[prop](dto[prop]);
}
}
return entity;
}
}
EDIT3: Looks like it was my mistake. I found the error when I looked closer at initializeProject. Below is what the function looked like before i fixed it.
function initializeProject(project) {
project.rowClass = ko.computed(function() {
if (project.Type == "R") {
return "project-list-item info";
} else if (project.Type == "P") {
return "project-list-item error";
}
return "project-list-item";
});
}
the issue was with project.Type I should have used project.Type() since it is an observable. It is a silly mistake that I have made too many times since starting this project.
EDIT4: Inside initializeProject some parts are working and others aren't. When I try to access project.ProjTargetDate() I get null, same with project.StartDate(). Because of the Null value I get an error thrown from the moment library as I am working with these dates to determine when a project is late. I tried removing the select from the client query and the call to the partial entity mapper and when I did that everything worked fine.
You seem to be getting closer. I think a few more guard clauses in your initializeProject method would help and, when working with Knockout, one is constantly battling the issue of parentheses.
Btw, I highly recommend the Knockout Context Debugger plugin for Chrome for diagnosing binding problems.
Try toType()
You're working very hard with your DTO mapping, following along with John's code from his course. Since then there's a new way to get projection data into an entity: add toType(...) to the end of the query like this:
var query = entityQuery
.from('Projects')
.where(p1.and(p2).and(p3))
.select(select)
.toType('Project'); // cast to Project
It won't solve everything but you may be able to do away with the dto mapping.
Consider DTOs on the server
I should have pointed this out first. If you're always cutting this data down to size, why not define the client-facing model to suit your client. Create DTO classes of the right shape(s) and project into them on the server before sending data over the wire.
You can also build metadata to match those DTOs so that Project on the client has exactly the properties it should have there ... and no more.
I'm writing about this now. Should have a page on it in a week or so.

I'm having a lot of trouble trying to modify a "this" object from within a pseudo javascript class when it's already been initialized

Scroll down to the bottom of this post to see a work around / possible solution.
This is probably easier just to explain in the source code with comments. The issue at hand is I cannot figure out how pseudo classes work together to perform the task I'm trying to do (explained in the code below).
The code is broken down into 3 files: lead.js, router.js, and db.js.
There are a decent amount of lines of code but most of it is comments.
[lead.js]
var bcrypt = require('bcrypt'),
validators = require('../lib/validators'),
utility = require('../lib/utility'),
document = {};
var Lead = module.exports = function (db) {
// Save a reference to the database.
this.db = db;
// Reference initial document.
// This is totally wrong, not sure how to 'send' a variable to the constructor of a class
// when I cannot add another param. Due to how I'm importing the db model, I won't know what
// the document is until I fill out the form. I've also tried 'document' instead of 'Lead.document'.
this.document = Lead.document;
// Setup the document if it exists.
// This also doesn't work.
// Basically I want to be able to set up a document variable outside of this module (line #100),
// Then pass it to this module after filling it up with values from a form.
// Then based on what's been filled in, it would fix up (trim, convert to lower case)
// some of the values automatically and default a few values that I'm not always going to pass.
if (!document) {
var salt = bcrypt.genSaltSync(10),
hash = bcrypt.hashSync(utility.generatePassword(), salt);
// Default values.
if (!document.meta.createdAt) { this.document.meta.createdAt = Date.now(); }
if (!document.login.password) { this.document.login.password = hash; }
if (!document.login.role) { this.document.login.role = 'User'; }
// Normalize a few values.
this.document.login.email = document.login.email.toLowerCase().trim();
this.document.contact.name.first = document.contact.name.first.trim();
this.document.contact.name.last = document.contact.name.last.trim();
this.document.contact.address.street = document.contact.address.street.trim();
this.document.contact.address.city = document.contact.address.city.trim();
this.document.contact.address.state = document.contact.address.state.trim();
this.document.contact.address.zip = document.contact.address.zip.trim();
this.document.contact.phone.home = document.contact.phone.home.trim();
}
// So in regards to the above code, the end result I'm looking for is...
// I want to append some properties to the this.document reference when the document is empty (when I'm updating it, I won't set the document),
// and on new documents it will append a few default values/normalize all the fields.
};
Lead.prototype.validate = function(fn) {
var errors = [];
// Some validation rules I cut out to make this shorter.
if (errors.length) return fn(errors);
fn();
};
Lead.prototype.save = function(fn) {
this.db.collection('leads', function(err, collection) {
if (err) { fn(new Error({message: err})); }
collection.insert(this.document, function(err, result) {
return fn(err, result);
});
});
};
---
[route.js file]
var db = require('../models/db');
app.post('/register', function(req, res) {
var data = req.body.lead || {};
// Fill the document.
var document = {
meta: {
host: req.headers.host,
referer: req.headers.referer,
createdIPAddress: req.connection.remoteAddress
},
login: {
email: data.email
},
contact: {
name: {
first: data.first,
last: data.last
},
address: {
street: data.street,
city: data.city,
state: data.state,
zip: data.zip
},
phone: {
home: data.phone
}
}
};
// Write the document.
db.lead.document = document;
db.lead.validate(function(err) {
if (err) {
req.session.error = err;
return res.redirect('back');
}
db.lead.save(function(err) {
res.redirect('/register/success');
});
});
});
---
[db.js]
var mongodb = require('mongodb'),
server = new mongodb.Server('localhost', 27017),
connection = new mongodb.Db('test', server);
connection.open(function(err, db) {});
module.exports = {
lead: new (require('./lead'))(connection)
};
When I run this, my validator always reports that the password is empty which makes sense. I'm sending the document initially to the class with an empty password (the password is randomly generated, not a form field) -- the problem is I have no idea what to do with the if (!document) ... code block to actually set the this.document properly.
I hope between the comments and code you can get an idea of what I'm trying to do. I've been stuck on this for a while.
EDIT
I changed the flow of it a bit to get a solution.
In the db.js, I exported the connection rather than instantiating the lead (and future models) directly.
In the router.js file, I require the db and lead file, then pass both the db connection and the document in the constructor of the Lead. Ex.
var lead = new Lead(db, document);
In the lead.js file, it becomes as simple as doing this.document = document (same as the db). When I submit a new lead, the values I don't send over from router.js get appended to the document (the created date, a random password, etc.) and everything is good.
Is this a decent way of handling this, or is there a better way to refactor this?
This is completely wrong way even if make this code work as you want. In this example you have singleton lead. By requesting /register url you want to set 'document' field to this singleton . (IMPORTANT) But requests work asynchronously. Absolutely no guarantee that you save the document, which has just validate. Because new request may overwrite it in lead object. You need to do this logic in request scope. One scope for one request. Not one for all.
You need to read up on object-oriented programming in Javascript.
The anonymous function you're defining near the top of your code is the constructor function, so with respect to the document property you want that is currently uninitialized, just type something like:
this.document = null;
Then some time later when you create a new object using this constructor, like so:
var myLead = new Lead(dbConnection);
You'll have the myLead.document property.
There are many other things wrong with your code, though. Why are you assuming that there is a global document variable with relevant data visible in your library when it's defined as {}? The code in that if statement at the end of your constructor should be run when the document property is set in your other file below, and should only expect this.document to exist.
You set var document = {} initially, and {} is not falsy. Better would be to set as a starting value document = null and then after checking for !document set document = {} before assigning whatever properties you need.

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