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<ol class="chapter"><li class="chapter-item expanded affix "><a href="../overview.html">Overview</a></li><li class="chapter-item expanded affix "><a href="../setup.html">Setup</a></li><li class="chapter-item expanded "><a href="../rubric/home.html"><strong aria-hidden="true">1.</strong> Rubrics</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../rubric/spec.html"><strong aria-hidden="true">1.1.</strong> Rubric Specification</a></li><li class="chapter-item expanded "><a href="../rubric/tests.html"><strong aria-hidden="true">1.2.</strong> Criteria Tests</a></li></ol></li><li class="chapter-item expanded "><a href="../submission/home.html"><strong aria-hidden="true">2.</strong> Submission</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../submission/prompt.html"><strong aria-hidden="true">2.1.</strong> Prompting for Data</a></li><li class="chapter-item expanded "><a href="../submission/fingerprint.html"><strong aria-hidden="true">2.2.</strong> Fingerprinting and Security</a></li></ol></li><li class="chapter-item expanded "><a href="../dropbox/home.html"><strong aria-hidden="true">3.</strong> Dropbox</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../dropbox/error_handling.html" class="active"><strong aria-hidden="true">3.1.</strong> Error Handling</a></li></ol></li></ol>
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<h1 class="menu-title">Rubric</h1>
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<h1><a class="header" href="#error-handling" id="error-handling">Error Handling</a></h1>
<p>When sending a submission to the dropbox, it's very important to provide feedback to the student. They should know if the submission went through successfully.</p>
<p>Submitting with the <code>Submission::submit()</code> function returns a <code>Result</code> that you can use to handle any possible errors. The <code>Err</code> variant of the <code>Result</code> is a <a href="https://docs.rs/reqwest/0.10.7/reqwest/struct.Error.html"><code>reqwest::Error</code></a>.</p>
<pre><pre class="playground"><code class="language-rust">// some code omitted
fn main() {
// Open the dropbox somewhere else
dropbox::open_with_arg("open_sesame", 8080);
let mut sub = Submission::new();
// Grading, etc goes here...
// using `match` gives us basic error handling.
// here, we're just printing the error. This can give more insight
// as to what went wrong.
match sub.submit("http://localhost:8080/submit") {
Ok(_) => println!("Submission recorded!"),
Err(e) => println!("Error! Couldn't record submission.\n{}", e);
}
}
</code></pre></pre>
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