Summary

This page describes each controller and its methods in detail.

Application Controller

This is the controller that inherits from the Rails base controller. This controller is created by default when a Rails project is created.

Methods

after_sign_in_path_for(resource_or_scope)

This method specifies the path to redirect to after signing in. This method executes after signing in. This redirecting method is necessary because the root path is the path to creating a new session. So, without this method, Rails would try to render a new session but Devise would redirect to the root since a user is already signed in so Rails would try to render the root session which, again, that's the new session view. In short, without this method, Rails goes through an infinite loop of redirections.

Statements Controller

This controller is in charge of handling all actions related to the statements. For example, showing all of the user's statements, creating and deleting statements etc.

This controller includes CalculationsHelper and ensures an authenticated user is present before performing any action.

Methods

index

Display all of the statements associated with the user.

new

Render new.html.erb with the information contained in the last statement. If there are no statements created, simply create a new instance and use that to populate a blank form.

create

Update the information contained within the _calculations.html.erb partial. If the user selected to create a new statement on the form in `_calculator.html.erb', create a new statement.

show

Verify the user using the verify_user method. Display a specific statement, if that statement belongs to the user that is making the request.

destroy

Finds the statement that needs to be deleted, and deletes it. If the statement to be deleted is not found, it displays a notice to the user and redirects the user to the index page.

get_statement

Looks for a specific statement using its id attribute. If not found, a notice is flashed to the user and it is redirected to the index view. Otherwise, the method returns the statement found.

verify_user

This method verifies the params object to see if the id attribute within it matches the id of the user that is currently logged in. This is necessary because otherwise, any user would be able to see statements from another user. For us, the desired behavior is that users can only see statements they own.