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Notes on video lecture:
MongoDB, node.js, Express and SWIG
Notes taken by Edward Tanguay on June 9, 2014 (go to class or lectures)
Choose from these words to fill the blanks below:
two, npm, column, routing, callback, package, BSON
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npm
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package manager for node.js
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node app.js
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cannot find package
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express = require('express') in app.js
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so we have do npm install express
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also requires express and mongodb
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we could install these indivually or with               .json
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we just have to say        install
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installs them in node_modules directory
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you could also install them globally
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helloworld in mongodb
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node.js driver
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communicates with mongod with         , a binary jSON
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driver is written in javascript
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handles things behind the scenes
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how to install
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node app.js
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cannot find module mongodb
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installs mongodb module
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var mc = require('mongodb').MongoClient;
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access the driver
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pass in a callback, it calls it when done connecting
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helloworld in express
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takes care of                and details of web application for us
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callback takes two arguments
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app.get has respond and request in callback
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express server started on port 8080
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in app.get, the star is wildcard for any handler that is not handled
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extending helloworld in express
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make file views/hello.html
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<h1>Hello, {name}</h1>
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templating engine: consolidate
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a set of wrappers for template libraries for express
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app.engine('html',cons.swig);
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cons is consolidate and swig is the templating engine
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helloworld with mongodb, express, and swig
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adding calls to mongo db from the last example
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Server = require('mongodb').Server;
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told it to use the native BSON parser
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not registering a callback
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it looks like we are using our database connection before it is even connected
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but we actually start listening as soon as the database connection is open
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we are just setting up mongoClient as an object and then pass it as a parameter in the                 
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express: handling GET requests
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registering only one route
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app.get('/:name', ...
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uses this template
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express: handling POST requests
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form to pick radio button choice
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we have app.get and app.post
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express.bodyParser() populates req.body so we can access it
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error handling function
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call next with an error object
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mongodb is schemaless
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in RDBMS if you want to add a new field to a row, you need to create a new              for all rows in the table
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you don't need to do this in mongodb
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this allows mongodb to be very agile
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JSON
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there are only        data structures inside JSON
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arrays
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[...]
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dictionaries
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{ key : value, key : value }
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blog project
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database model if we used RDBMS
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database model in mongodb
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you can embed the comments in the posts
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if the email is missing from any comment, it doesn't matter, you can leave it out
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it is the way you access the data that guides how to design your data structures
MongoDB Introduction
Installing MongoDB/node.js and Hello Worlds
MongoDB, node.js, Express and SWIG
Basic Querying in MongoDB
More Querying in MongoDB
MongoDB CRUD via Node.js
Comparing RDBMS and MongoDB Schema Design