Express Lab
Purpose From Curriculum Development Team: This lab assumes that learners spent the entire day following the instructor as the built routes for the first time in Express. Learners are expected to not at all be comfortable yet with the terminology of the backend, or in building things with the backend. This Lab/HW is their first opportunity to take chances, make mistakes and get messy with the actual writing of backend code, they should also see the synergy between what they reviewed yesterday in the Callbacks assignment. This assignment is successful if learners complete with a greater understanding of what they did in class and way more questions about express.
Intro
It’s been a long day and you’ve covered a lot of ground.
It’s natural, in fact, expected, to feel “uncomfortable” and confused by Node.js & Express at this point.
As always, the journey toward competence requires practice - so let’s get on with it!
Exercise
The goal of the exercise is to do put in a rep doing everything that you did during the Express lesson! This lab is a deliverable
Build 10 Routes and a view engine, say anything you want
Make 2 different templates, and use them both in different routes ( you can only have 1 view engine but multiple templates )
Bonus
Dynamically add links to your view engine so you can make anchor tags to link your pages together, hmmm how would you do that ….. hint split , loop , you can figure it out, but it will take a lot of problem solving, you'll have to do more than change one line of code, but it will only take a few lines of code, use an array or object another hint.
Super Bonus
This is an advanced bonus that previews what we will soon learn in class, I didn’t teach you any of this but your free to research it’s not required at all…
Create a route and view dedicated to displaying a single data resource, such as a single student.
We refer to this as the show route/view, vs. the index route/view.
The key to implementing this feature is route parameters documented in the Route parameters section of the Express Routing guide (Links to an external site.).
Basically, you can define a route as follows:
// have some object with a bunch of learners // edit your view engine as needed and don’t copy this code // word for word, bar for bar, its just an idea
app.get(‘/learners/:id’, function(req, res) {
console.log(The value for the :id route parameter is: ${req.params.id});
res.render(‘learners/show’, { learnerId: req.params.id, learnerName: learnerObject[req.params.id].name });
});
To send a matching route from the browser, you can use an html a tag that generates a hyperlink that looks like:
Click for Details for Student ##studentName##>
Data
[
{
"id": 1,
"name": "Leanne Graham",
"username": "Bret",
"email": "Sincere@april.biz",
"address": {
"street": "Kulas Light",
"suite": "Apt. 556",
"city": "Gwenborough",
"zipcode": "92998-3874",
"geo": {
"lat": "-37.3159",
"lng": "81.1496"
}
},
"phone": "1-770-736-8031 x56442",
"website": "hildegard.org",
"company": {
"name": "Romaguera-Crona",
"catchPhrase": "Multi-layered client-server neural-net",
"bs": "harness real-time e-markets"
}
},
{
"id": 2,
"name": "Ervin Howell",
"username": "Antonette",
"email": "Shanna@melissa.tv",
"address": {
"street": "Victor Plains",
"suite": "Suite 879",
"city": "Wisokyburgh",
"zipcode": "90566-7771",
"geo": {
"lat": "-43.9509",
"lng": "-34.4618"
}
},
"phone": "010-692-6593 x09125",
"website": "anastasia.net",
"company": {
"name": "Deckow-Crist",
"catchPhrase": "Proactive didactic contingency",
"bs": "synergize scalable supply-chains"
}
},
{
"id": 3,
"name": "Clementine Bauch",
"username": "Samantha",
"email": "Nathan@yesenia.net",
"address": {
"street": "Douglas Extension",
"suite": "Suite 847",
"city": "McKenziehaven",
"zipcode": "59590-4157",
"geo": {
"lat": "-68.6102",
"lng": "-47.0653"
}
},
"phone": "1-463-123-4447",
"website": "ramiro.info",
"company": {
"name": "Romaguera-Jacobson",
"catchPhrase": "Face to face bifurcated interface",
"bs": "e-enable strategic applications"
}
},
{
"id": 4,
"name": "Patricia Lebsack",
"username": "Karianne",
"email": "Julianne.OConner@kory.org",
"address": {
"street": "Hoeger Mall",
"suite": "Apt. 692",
"city": "South Elvis",
"zipcode": "53919-4257",
"geo": {
"lat": "29.4572",
"lng": "-164.2990"
}
},
"phone": "493-170-9623 x156",
"website": "kale.biz",
"company": {
"name": "Robel-Corkery",
"catchPhrase": "Multi-tiered zero tolerance productivity",
"bs": "transition cutting-edge web services"
}
},
{
"id": 5,
"name": "Chelsey Dietrich",
"username": "Kamren",
"email": "Lucio_Hettinger@annie.ca",
"address": {
"street": "Skiles Walks",
"suite": "Suite 351",
"city": "Roscoeview",
"zipcode": "33263",
"geo": {
"lat": "-31.8129",
"lng": "62.5342"
}
},
"phone": "(254)954-1289",
"website": "demarco.info",
"company": {
"name": "Keebler LLC",
"catchPhrase": "User-centric fault-tolerant solution",
"bs": "revolutionize end-to-end systems"
}
},
{
"id": 6,
"name": "Mrs. Dennis Schulist",
"username": "Leopoldo_Corkery",
"email": "Karley_Dach@jasper.info",
"address": {
"street": "Norberto Crossing",
"suite": "Apt. 950",
"city": "South Christy",
"zipcode": "23505-1337",
"geo": {
"lat": "-71.4197",
"lng": "71.7478"
}
},
"phone": "1-477-935-8478 x6430",
"website": "ola.org",
"company": {
"name": "Considine-Lockman",
"catchPhrase": "Synchronised bottom-line interface",
"bs": "e-enable innovative applications"
}
},
{
"id": 7,
"name": "Kurtis Weissnat",
"username": "Elwyn.Skiles",
"email": "Telly.Hoeger@billy.biz",
"address": {
"street": "Rex Trail",
"suite": "Suite 280",
"city": "Howemouth",
"zipcode": "58804-1099",
"geo": {
"lat": "24.8918",
"lng": "21.8984"
}
},
"phone": "210.067.6132",
"website": "elvis.io",
"company": {
"name": "Johns Group",
"catchPhrase": "Configurable multimedia task-force",
"bs": "generate enterprise e-tailers"
}
},
{
"id": 8,
"name": "Nicholas Runolfsdottir V",
"username": "Maxime_Nienow",
"email": "Sherwood@rosamond.me",
"address": {
"street": "Ellsworth Summit",
"suite": "Suite 729",
"city": "Aliyaview",
"zipcode": "45169",
"geo": {
"lat": "-14.3990",
"lng": "-120.7677"
}
},
"phone": "586.493.6943 x140",
"website": "jacynthe.com",
"company": {
"name": "Abernathy Group",
"catchPhrase": "Implemented secondary concept",
"bs": "e-enable extensible e-tailers"
}
},
{
"id": 9,
"name": "Glenna Reichert",
"username": "Delphine",
"email": "Chaim_McDermott@dana.io",
"address": {
"street": "Dayna Park",
"suite": "Suite 449",
"city": "Bartholomebury",
"zipcode": "76495-3109",
"geo": {
"lat": "24.6463",
"lng": "-168.8889"
}
},
"phone": "(775)976-6794 x41206",
"website": "conrad.com",
"company": {
"name": "Yost and Sons",
"catchPhrase": "Switchable contextually-based project",
"bs": "aggregate real-time technologies"
}
},
{
"id": 10,
"name": "Clementina DuBuque",
"username": "Moriah.Stanton",
"email": "Rey.Padberg@karina.biz",
"address": {
"street": "Kattie Turnpike",
"suite": "Suite 198",
"city": "Lebsackbury",
"zipcode": "31428-2261",
"geo": {
"lat": "-38.2386",
"lng": "57.2232"
}
},
"phone": "024-648-3804",
"website": "ambrose.net",
"company": {
"name": "Hoeger LLC",
"catchPhrase": "Centralized empowering task-force",
"bs": "target end-to-end models"
}
}
]