Improve the performance of your application

Create a model to contain a library’s information

Create a model to contain a customer’s information

Create a model to contain a book’s information

Add a property that contains if the book is available or not

Create a model to contain a genre’s information

Create a model to save a record for each time a book is loaned out to a customer

Add properties that contain the return date of the book, if the book has been returned yet, and a fine if the book hasn’t been returned on time

Add the required relations between each model for a functioning data model: library has many books and customers, and books has and belongs to many genres. Also, add relations between the customer’s and book’s models, to the loan model

Create an action named `Loop through loans` and select the model `Loan`

Create an action named `Calculate loan fine` and leave the model empty

Set the trigger to `Scheduled` and write a cronjob that executes the action `Loop through loans` every day at a certain time

Create a collection of loans on the action `Loop through loans` and name it `loans`

Add a loop event to the action `Loop through loans` which loops through the collection `loans`

Add an action event inside of the loop event which executes the action `Calculate loan fine`

Create a date input variable on the action `Calculate loan fine` and name it `return_date`

Create a number input variable on the action `Calculate loan fine` and name it `loan_id`

Add a condition event to the action `Calculate loan fine` with as value `today >= var:return_date ? true : false`

Add an update event to the action `Calculate loan fine`

<p>Create a loan object variable with the filter where id is equal to `loan_id` and name it `loan_object`</p>

Create a number expression variable with the expression `today - var:return_date` and name it `days_overdue`

Create a number with decimal expression variable with a value multiplied by `days_overdue` to generate the fine price and name it `fine`

Assign the variable `fine` to the fine property of `loan_object`

Create a model named `Employee` that contains a text property named `name`

Create a model named `Function` that contains a text property named `title`

Create a background action with a number input variable for the employee id and a collection input variable of functions for the employee’s functions and name the action `Assign function to employee`

Create an endpoint with the path `/action` and add an action to it

Create a page with a submit button that executes the action on the endpoint `/action`

Create an endpoint with the path `/json` and add a render web template action event which contains the name of the employee in JSON format

Create a collection variable of the model `Function` on the endpoint `/action`

Create a number input variable of the employee id on the endpoint `/json`

Create an object variable of the model `Employee` where the id is equal to the employee id on the endpoint `/json`

Add a create event to the action of the endpoint `/action` which creates a new employee record

Add a render web template event to the action of the endpoint `/action` which renders a template with an AJAX request that keeps requesting the employee name from the endpoint `/json` until it has retrieved it

Add a spinner to the render web template of the endpoint `/action` when the AJAX call is still executing

Add a loop event to the action of the endpoint `/action` which iterates through the collection of functions and executes the action `Assign function to employee` for each iteration

Add an update event to the action `Assign function to employee` which updates the functions collection of the employee record