Welcome to homework 3 of the Rails DeCal.
As you complete this homework, refresh your browser to observe changes you expect. If that doesn't work, try restarting the server.
Per usual, Google and Stack Overflow are your best friends when debugging.
Fork this repository and clone your fork as usual. In your newly forked sp18-hw3 project, run:
bundle install
and then
rails server
Go to localhost:3000 - there should be no errors. Remember the above setup steps, we won't include them in instructions for future homeworks anymore.
<%= @some_variable %> is called embedded Ruby. Once you define @some_variable in the appropriate controller action, you'll be able to render it with <%= @some_variable %> in your view.
Controllers and views are defined in the directories app/controllers and app/views respectively and routes are defined in the file config/routes.rb.
Let's practice handling params from a form POST request.
We've defined a controller TeachersController for you, along with two views views/teachers/new.html.erb and views/teachers/show.html.erb.
Go to localhost:3000/teachers/new - there should be no errors. Following, fill out all form inputs and submit the form - you should see a page without the inputs you entered.
Change TeachersController such that on form submission, the inputs you entered into the form are rendered.
Hint 1: look at both the 'new' and 'show' teacher views (where can you find these files?) to see what params are being sent through the form and what variables the show view is expecting to render from the controller.
Hint 2: Try to observe the logs in the terminal window running your rails server after you submit the form, we can learn something about params from here.
Finally, answer the questions in ANSWERS.md.
To practice everything we've learned in the course so far, please do whatever is necessary to support the following:
A GET request to localhost:3000/students/new renders a form for a student. This form should have at least three inputs (whatever you want), all of which have placeholders defined in a controller.
Form submission should create a POST request and render a view (at any route) with all the form inputs.
A GET request to localhost:3000 should redirect to localhost:3000/students/new.
We have not directly taught this in class (though you may have seen it in a previous homework), please consult Google to implement this.
Run these commands to submit:
git add .
git commit -am "whatever message you want"
git push origin master
Fill out the submission form for this homework, which can be found on Piazza.