# views.reagent Example - Class Registry

This is a "Class Registry" application that has a lot of CRUD operations in it which allow users 
to manage students and professors, as well as classes and then assign the students/professors to 
those classes. The idea is _very_ loosely based off one of the Om tutorial applications (the data 
used is almost identical).

Note that this example is somewhat complicated as there are several lists of data shown in the UI,
all of which are completely editable to the user. While the code is longer as a result, this still
serves as a more interesting example with several views being used (some using parameters).

Definitely take a look at the [Todo MVC][1] example app before diving into this and also be sure 
you're familiar with Reagent.

[1]: https://github.com/gered/views.reagent/tree/master/examples/todomvc

## Running

### Creating the Database

This example app uses a PostgreSQL database. The SQL script to create it is in `create_db.sql`.

A Docker compose file `pgsql.docker-compose.yml` is provided and pre-configured to allow you to
quickly spin up a PostgreSQL database that will be pre-initialized via `create_db.sql` through
Docker.

    $ docker-compose -f pgsql.docker-compose.yml up

Alternatively, if you already have a PostgreSQL database available, you can run the
`create_db.sql` via `psql` easily enough:

    $ psql < create_db.sql

(Of course, add any username/host parameters you might need)

### Starting It Up

To build everything and run in one step:

    $ lein rundemo

Then open up a web browser or two and head to http://localhost:8080/ to see the web app in action.

If you want to run this application in a REPL, just be sure to build the ClojureScript:

    $ lein cljsbuild once

And then in the REPL you can just run:

    (-main)

to start the web app (you should be put in the correct namespace immediately).