FHIR-Graph

This is the folder for the fhir-graph npm package. This package is for reading FHIR files and generate a chart data for those FHIR files.

Features

It allows you to read FHIR json files in a folder, sort them by issued date, and generate the char data of date and value. Then you can easily show it by using chart.js.

How to download:

Use "npm install fhir-graph" or specify "fhir-graph" : "~1.1.1" (the current lastest version) in your node package.json dependencies.

How to use:

After finishing download, put the folder that contains all your FHIR files into the node_modules/fhir_graph/fhir_files. For examples, put folder "steps" that contains 6 fhir files (they must be json files) into yourProjectName/node_modules/fhir_graph/fhir_files/.

Then in your code (probably in your route js), use it like that:

    var FHIR_Graph = require('fhir-graph');
    var fhir_foldername = 'steps';

    FHIR_Graph.show_FHIR_Graph(fhir_foldername, function(err, data) {
        if (err) throw err;
        var fhir_data = data;
        res.render('home.ejs', {
            fhir_data : fhir_data,
            path      : 'dashboard.ejs',
            title     : 'Dashboard'
        });
    });

You must use a call back to get the data because it's synchronized.

Then just use the "fhir_data" in your ejs file like that:

                <script src="/chartjs/js/vendor/modernizr-2.8.3.min.js"></script>
                <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.min.js"></script>

                <div class="col-md-4">
                    <div class="card">
                        <div class="content">
                            <canvas id="stepsMonth" height="335"></canvas>
                            <script>
                                const STEPSMONTH = document.getElementById("stepsMonth");
                                Chart.defaults.scale.ticks.beginAtZero = true;
                                var  stepsMonth = new Chart(STEPSMONTH, <%- JSON.stringify(testFhir) %>);
                            </script>
                        </div>
                    </div>
                </div>

Then you can see the graph from the page you specified: