We Keep Coding

Manipulating nested objects

I have the following data structure:
{
"nodes": [
{
"frontmatter": {
"excerpt": null,
"featured": true,
"title": "A Post with Content"
},
"fields": {
"slug": "posts/a-post-of-type-page",
}
},
{
"frontmatter": {
"excerpt": null,
"featured": null,
"title": "A post of type post"
},
"fields": {
"slug": "posts/a-post-of-type-post",
}
},
{
"frontmatter": {
"excerpt": null,
"featured": null,
"title": "Another Post (or type post)"
},
"fields": {
"slug": "posts/another-post-or-type-post",
}
},
{
"frontmatter": {
"excerpt": "This is the excerpt of a post",
"featured": null,
"title": "With Content"
},
"fields": {
"slug": "posts/with-content",
}
},
]
}
I know that I can use myObject.nodes.map(x => x.frontmatter) to bring the frontmatter up a level and removing the nesting. But, I now need to change each node into the following structure within the resulting array:
{
"nodes": [
{
"excerpt": null,
"featured": true,
"title": "A Post with Content"
"slug": "posts/a-post-of-type-page",
},
...
]
}
So, I need to remove the nesting for both the frontmatter and fields.
Thanks

const d = {"nodes":[{"frontmatter":{"excerpt":null,"featured":true,"title":"A Post with Content"},"fields":{"slug":"posts/a-post-of-type-page"}},{"frontmatter":{"excerpt":null,"featured":null,"title":"A post of type post"},"fields":{"slug":"posts/a-post-of-type-post"}},{"frontmatter":{"excerpt":null,"featured":null,"title":"Another Post (or type post)"},"fields":{"slug":"posts/another-post-or-type-post"}},{"frontmatter":{"excerpt":"This is the excerpt of a post","featured":null,"title":"With Content"},"fields":{"slug":"posts/with-content"}}]};
d.nodes = d.nodes.map(({frontmatter, fields})=>({...frontmatter, ...fields}));
console.log(d);

Here is another solution:
const data = {"nodes":[{"frontmatter":{"excerpt":null,"featured":true,"title":"A Post with Content"},"fields":{"slug":"posts/a-post-of-type-page"}},{"frontmatter":{"excerpt":null,"featured":null,"title":"A post of type post"},"fields":{"slug":"posts/a-post-of-type-post"}},{"frontmatter":{"excerpt":null,"featured":null,"title":"Another Post (or type post)"},"fields":{"slug":"posts/another-post-or-type-post"}},{"frontmatter":{"excerpt":"This is the excerpt of a post","featured":null,"title":"With Content"},"fields":{"slug":"posts/with-content"}}]};
let newArr = [];
data.nodes.forEach((n)=>newArr.push(Object.assign(n.fields, n.frontmatter)));
console.log({"nodes": newArr});

Passing a parameter between multiple intents triggering Dialogflow's Fulfillment

I have a Dialogflow agent that I've setup with a web hook that is pulling info from a Firebase database. I am trying to have different intents kick off different queries on the DB. From the Welcome Intent the agent asks for a name that it will matching the DB (e.g. Hi it's nice to meet you? What is the name you looking for?). From there the user is gives a name which is a response that triggers another intent called "name." This intent has a parameter called "agent.parameters.defaultName" which is passed into the fulfillment and used to query the DB. Below is the webhook kicks off the following script:
});
process.env.DEBUG = 'dialogflow:debug'; // enables lib debugging statements
exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request,
response) => {
const agent = new WebhookClient({ request, response });
console.log('Dialogflow Request headers: ' +
JSON.stringify(request.headers));
console.log('Dialogflow Request body: ' + JSON.stringify(request.body));
//function to request bio info on the db
function handleData(agent) {
const congressName = agent.parameters.congressName;
return admin.database().ref().once("value").then((snapshot) => {
var nameInfo = snapshot.child('Name/' + congressName + '/profile').val();
agent.add(nameInfo + "\n \n Tell me the first and last name of the next
person you'd like to learn about. Or you can say Twitter to get this
individual's Twitter info.");
});
}
//Function to return the name's tweet info
function handleTweet(agent) {
const congressName = agent.parameters.congressName;
return admin.database().ref().once("value").then((snapshot) => {
var nameTweet = snapshot.child('Name/' + congressName + '/twitter_handle').val();
agent.add(nameTweet);
});
}
// Run the proper function handler based on the matched Dialogflow intent
name
let intentMap = new Map();
intentMap.set('name', handleData);
intentMap.set('name - custom', handleTweet);
agent.handleRequest(intentMap);
});
This returns the bio and prompts the user to say another name or say twitter to pull the twitter info.
If the user says Twitter I'd like for another intent to be triggered. This Intent would also have a fulfillment that would call the DB, but this time it'd pull the Twitter info. Where I'm having an issue is I can't get this intent to trigger the fulfillment. I'm wondering if my parameter is in the right section or if I need to figure out how to pass it to the Twitter intent. I'm not sure where I'm off.
Below are the intents:
//Name intent
{
"id": "0c7bd173-e7fe-4bb4-9b87-7b94624ceb4e",
"name": "name",
"auto": true,
"contexts": [],
"responses": [{
"resetContexts": false,
"action": "congressName",
"affectedContexts": [{
"name": "Name",
"parameters": {},
"lifespan": 5
}],
"parameters": [{
"id": "a79559d6-d3db-4b37-b681-174fce8bc58c",
"required": true,
"dataType": "#sys.any",
"name": "congressName",
"value": "$congressName",
"prompts": [{
"lang": "en",
"value": "What is the proper first and last name of the person you
are looking for info on?"
}],
"isList": false
}],
"messages": [{
"type": 0,
"lang": "en",
"speech": []
}],
"defaultResponsePlatforms": {},
"speech": []
}],
"priority": 500000,
"webhookUsed": true,
"webhookForSlotFilling": false,
"lastUpdate": 1535995990,
"fallbackIntent": false,
"events": []
}
[{
"id": "a14768b0-c64d-4a63-9ccb-d9452b74ed21",
"data": [{
"text": "tammy duckworth",
"alias": "congressName",
"meta": "#sys.any",
"userDefined": false
}],
"isTemplate": false,
"count": 0,
"updated": 1535223341
},
{
"id": "520acfc8-102b-4e14-9342-54678e9f6940",
"data": [{
"text": "tom cotton",
"alias": "congressName",
"meta": "#sys.any",
"userDefined": false
}],
"isTemplate": false,
"count": 0,
"updated": 1535223341
}
]
//Twitter intent
"id": "78330811-d692-4c70-adb2-3130b608d46f",
"name": "twitter",
"auto": true,
"contexts": [],
"responses": [{
"resetContexts": false,
"action": "",
"affectedContexts": [],
"parameters": [{
"id": "7acd4cb2-9cd7-4c2a-b5aa-2981ee25acf4",
"dataType": "#congressName",
"name": "congressName",
"value": "$congressName",
"isList": false
}],
"messages": [{
"type": 0,
"lang": "en",
"speech": []
}],
"defaultResponsePlatforms": {},
"speech": []
}],
"priority": 500000,
"webhookUsed": true,
"webhookForSlotFilling": false,
"lastUpdate": 1535996186,
"fallbackIntent": false,
"events": []
}
[{
"id": "4f099a33-74c6-4832-acd1-815aca6605f2",
"data": [{
"text": "Susan Collins",
"alias": "congressName",
"meta": "#congressName",
"userDefined": false
},
{
"text": " Twitter",
"userDefined": false
}
],
"isTemplate": false,
"count": 0,
"updated": 1535996186
},
{
"id": "f775749a-56fd-410d-a167-174e6eb03ddf",
"data": [{
"text": "twitter ",
"userDefined": false
},
{
"text": "#congress",
"alias": "congressName",
"meta": "#congressName",
"userDefined": true
}
],
"isTemplate": false,
"count": 0,
"updated": 1535238371
}
]

Angular Schema Forms

I am completely new to Angular Schema forms and am trying to create some forms with it to display on my html pages. I would like to know how and where to place the form content and the schema content as defined in this page. In what kind of files do I place these lines of code and how can I call the form to be displayed in my html pages?
Form
[
"name",
"email",
{
"key": "comment",
"type": "textarea",
"placeholder": "Make a comment"
},
{
"type": "submit",
"style": "btn-info",
"title": "OK"
}
]
Schema
{
"type": "object",
"title": "Comment",
"properties": {
"name": {
"title": "Name",
"type": "string"
},
"email": {
"title": "Email",
"type": "string",
"pattern": "^\\S+#\\S+$",
"description": "Email will be used for evil."
},
"comment": {
"title": "Comment",
"type": "string",
"maxLength": 20,
"validationMessage": "Don't be greedy!"
}
},
"required": [
"name",
"email",
"comment"
]
}
Help in this regard with some detailed beginner level support guidelines will be much appreciated.

One way is to provide the schema and the instance data in a controller of your choice.
The documentation wiki provides a basic example where you should get all the necessary information.
Controller:
angular.module('myModule', ['schemaForm'])
.controller('FormController', function($scope) {
$scope.schema = {
type: "object",
properties: {
name: { type: "string", minLength: 2, title: "Name", description: "Name or alias" },
title: {
type: "string",
enum: ['dr','jr','sir','mrs','mr','NaN','dj']
}
}
};
$scope.form = [
"*",
{
type: "submit",
title: "Save"
}
];
$scope.model = {};
}
Template:
<div ng-controller="FormController">
<form sf-schema="schema" sf-form="form" sf-model="model"></form>
</div>

Loopback embedsMany Helper methods don't work

I have these two models:
Student
{
"name": "student",
"plural": "students",
"base": "User",
"idInjection": false,
"options": {
"validateUpsert": true
},
"relations": {
"test": {
"type": "embedsMany",
"model": "test",
"property": "mytest",
"options": {
"validate": true,
"forceId": false
}
}
}
and
Test
{
"name": "test",
"base": "Model",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"text": {
"type": "string",
"required": true
}
}
}
When I try to create a new test I get this error
Error: Invalid reference: undefined
I create the test in this way:
Student.js
studentInstance.test.add({text : "something "})
What am I doing wrong?
Update
Delete in embedsMany
update id in test.
Student.js
Student.show = function(email, cb) {
Student.findById(email,function(err, student) {
...
var tmp = student.mytest;
for (var i = 0; i < tmp.length; i++) {
student.test.destroy(tmp[i].id);
}
})
...
}
I tried with
destroy not work correctly, not always remove the data
and
remove show this error
Error: Invalid reference: undefined
at EmbedsMany.remove
Update
Added a example of db
{
"_id": "value",
"property1": "value",
.
.
"mytest": [
{
"text": "something",
"creation": {
"$date": "2016-08-23T14:31:44.678Z"
},
"id": "d738253472876b17feb4b46b"
}
]
}

You don't have test model.
In test.json you defined its names as notification => "name": "notification",
UPDATE
For building (without persisting) an embedded instance please use studentInstance.test.build({text : "something "})
and for creating (with persisting) that please use studentInstance.test.create({text : "something "})

After 3 years, I've faced with same problem by using remove, destroyById.
And then I use unset method. It works.
Person.findById(body.metadata.person.id, (err, person) => {
person.creditCards.unset(
body.creditCard.id,
(err, res) => {
}
);
}
This works well.

Why are relations not being added to my loopback.io objects in the models?

I am quite new to Loopback and NodeJS, so please tell me if there is a "Node way" of doing something that I am missing. I decided to write a basic application to try and learn more.
I have two models, 'UserInformation' and 'ClothingArticle'. I have created a 'hasMany' relation from UserInformation to ClothingArticle.
As a basic test, I wanted to add a remote method to UserInformation to get recommendations for ClothingArticles. However, I cannot seem to get access to anything related to ClothingArticles. I added code into the common/models/user-information.js file to try and retrieve information about the relation, but am not sure if this is even the right spot to be putting it.
My code is below, could you help?
common/models/user-information.js:
module.exports = function(UserInformation) {
get_methods = function(obj) {
var result = [];
for(var id in obj) {
try {
if(typeof(obj[id]) == "function") {
result.push(id + " (function): "); //+ obj[id].toString());
}
else
result.push(id + ": "); // + obj[id].toString());
}
catch (err) {
result.push(id + ": inaccessible");
}
}
return result;
}
// This doesn't anything about my new relations?
console.log(get_methods(UserInformation.prototype));
UserInformation.recommendations = function(source, callback) {
var response = "I don't have any recommendations.";
var test_function = UserInformation.findById(3, function(err, instances) {
if(err) return console.log("Errors: " + err);
console.log("Instances: " + String(instances));
// Nothing here either about the relations.
console.log(get_methods(UserInformation));
console.log(UserInformation.app);
/*
instances.clothingArticles.create({
id:92,
colors:['red','blue']
});
*/
console.log("Created a new clothing article.");
});
console.log (response);
callback(null, response);
}
UserInformation.remoteMethod(
'recommendations',
{
accepts: [
{arg: 'source', type: 'string'} // Used to mark the source (closet, generic, etc)
],
http: {path: '/recommendations', verb: 'get'},
returns: {arg: 'recommendations', type: 'string'}
}
);
};
common/models/user-information.json:
{
"name": "UserInformation",
"base": "PersistedModel",
"strict": false,
"idInjection": false,
"properties": {
"birthday": {
"type": "date"
},
"id": {
"type": "number",
"id": true,
"required": true
},
"eye_color": {
"type": "string"
},
"hair_color": {
"type": "string"
},
"weight": {
"type": "string",
"comments": "pounds"
},
"height": {
"type": "number",
"comments": "inches"
}
},
"validations": [],
"relations": {
"clothingArticles": {
"type": "hasMany",
"model": "ClothingArticle",
"foreignKey": "owner_id"
}
},
"acls": [],
"methods": []
}
common/models/clothing-article.json:
{
"name": "ClothingArticle",
"base": "PersistedModel",
"strict": false,
"idInjection": false,
"properties": {
"id": {
"type": "number",
"id": true,
"required": true
},
"colors": {
"type": [
"Color"
],
"required": true
},
"owner_id": {
"type": "number"
}
},
"validations": [],
"relations": {},
"acls": [],
"methods": []
}

I suggest starting with our getting started example and working your way through through the tutorial series here: https://github.com/strongloop/loopback-example
The questions you ask are answered throughout the examples (ie. model relations). To answer your question, if you defined a relation properly, you should be able to access the relation via dot.
...
UserInformation.ClothingArticle...
...
See http://docs.strongloop.com/display/LB/HasMany+relations for more information.