Catching Errors

Displaying an error message for the user

1. Open server.js
2. Find the HTTP GET myaccount display route
3. When a request doesn't return an ILLRequest, return the Error view. Pass it the following variables:

• error
• error_message
• error_detail

    res.render('display-error', {error: error.getCode(), error_message: error.getMessage()});

4. Create file views/display-error.html

<%- include('header.html') -%>
    <h1>System Error</h1>
    <div id="error_content">
    <p id="status">Status - <%=error%></p>
    <% if (error_message) { %>
    <p id="message">Message - <%=error_message%></p>
    <% }; %>
    <% if (error_detail) { %>
    <p id="detail"><%=error_detail%></p>
    <% }; %>
    </div>
<%- include('footer.html') -%>

Handle authentication errors

1. Open server.js
2. In the getAccessToken function, add error template to the catch block

    let error = new ILLRequestError(err);
    res.render('display-error', {error: error.getCode(), error_message: error.getMessage(), error_detail: error.getDetail()});