Javascript Fhir on NodeJS

Question

I've been using a fhir.js library in nodejs. I have got the read and search working but not the create or update which consistently gives me an error. Has anyone else used this library?

I instantiate my client like this:

var client = new mkFhir({
    baseUrl: 'http://fhirtest.uhn.ca/baseDstu1'
    });

Develop a patient entry like so:

var entry =
{
    category: [{term: 'TAG term', schema: 'TAG schema', label: 'TAG label'}],
    content: 
    {
            resourceType: "Patient",
            name: 
            [
            {
                family: ["Bob"],
                given: ["Smith"]
            }
            ],
            birthDate: '1990-06-20' 
    }
};

Call create from the library like this:

var test = client.create(entry, function(err, entry)
{
    console.log(entry.id);
    console.log(err);
});

In the library, the error I receive is in resource.js stating id = headers('Content-Location') -- type error, undefined is not a function.

Things I've tried:

So I changed it to id = headers && headers('Content-Location') as per the read method. This gave me a 'Content-Type' is not defined but required for UPDATE. So I added a Content-Type in headers. That gave me a can not parse JSON error. So I re-wrote the method and now retrieve a patient object, which is updated in my console but not in the server.

Here is the create method:

exports.create = function(baseUrl, http, entry, cb, err) {
    var headers, resource, tagHeader, tags, type;
    tags = entry.category || [];
    resource = entry.content;
    assert(resource, 'entry.content with resource body should be present');
    type = 'Patient';
    assert(type, 'entry.content.resourceType with resourceType should be present');
    headers = {};
      headers['Content-Type'] = "application/json";
    tagHeader = tagsToHeader(tags);
    if (tagHeader.length > 0) {
      headers["Category"] = tagHeader;
    }
    return http({
      method: 'POST',
      url: "" + baseUrl + "/" + type,
      data: toJson(resource),
      headers: headers,
      success: function(data, status, headers, config) {
        var id;
        id = headers('Content-Location');
        tags = headerToTags(headers('Category')) || tags;
        return cb({
          id: id,
          category: tags || [],
          content: data || resource
        }, config);
      },
      error: err
    });
  };

The error message is clear: `header` is not a function, it's an object. I guess you should be using `headers["Content-Location"]` instead - but this will return `undefined`. — Andreas, Jul 08 '15 at 15:53

score 0 · Answer 1 · answered Jul 09 '15 at 18:40

0

Do you have write permissions on the directory? If you can read and search but not create or update, you may not be able to write to the directory.

answered Jul 09 '15 at 18:40

Rocky Raccoon

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Javascript Fhir on NodeJS

1 Answers1