form_for Lab

Objectives

1. Use form_for to build a new form
2. Use form_for to build an edit form
3. Mass assign form data to ActiveRecord instances on new and edit
4. Build RESTFul actions for new, create, edit, and update, with the correct routes and route helper urls.

Instructions

For this lab you will be extending the functionality of the Flatiron school's student management application by building in the functionality to create and edit school classes. You will build all of the functionality from scratch, including building out the models, views, and controllers for the SchoolClass and Student resources.

Below is what will be needed for each component of the MVC structure:

• Models - Create a SchoolClass model, along with its associated database table. The SchoolClass table should have the columns: title:string and room_number:integer. The Student model and database table have already been created for you.

• Controllers - Create controller files for school_classes and students. Build out the new, create, show, edit, and update actions in each of the controllers.

• Views - Create a show page for each resource, along with new and edit forms.

You will also need to create routes for each path mentioned above.

The tests for this application are located in the spec/controllers/, spec/features/, and spec/models/ directories.

Requirements

Utilize the form_for methods for all four of the forms and integrate each form_for call with the respective controller actions. Also make sure to utilize the <%= f.submit %> submit button syntax to have the button text automatically generated.

Since you're using form_for, make sure you are using strong parameters for the controller create and update actions, if you don't remember how to do it, here is how we implemented strong params in the README: @post.update(params.require(:post).permit(:title, :description)). (hint: you can pass the strong parameter call to the create method just like we did on update)

If you run into issues drawing the routes, inspect element on the forms to see what path form_for is automatically trying to pass the form data to.

Resources

• Reading

• Documentation

View form_for Lab on Learn.co and start learning to code for free.

View form_for lab on Learn.co and start learning to code for free.