Implementing custom Docusign connector

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Louis Orleans

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Sep 30, 2016, 3:23:36 AM9/30/16

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I'm trying to use Docusign's Esignature API with Loopback. I was hoping to implement a custom connector for this, similar to the Sendgrid connector. I've done a bunch of reading about non-database connectors, and building them.

I've put together an example project in the Github repo to demonstrate the issue.

I'd like for the API to work similarly to the one from the Sendgrid and Twilio connectors. For each of these connectors, you add a new datasource to datasources.json, and add a model to model-config.json. Then, you should be able to access the API Sendgrid from the Loopback global.

datasources.json

...
"twilio": {
    "name": "twilio",
    "connector": "loopback-connector-twilio",
    "accountSid": "YOUR_TWILIO_ACCOUNT_SID",
    "authToken": "YOUR_TWILIO_AUTH_TOKEN"
}

model-config.json

...
"Twilio": {
    "dataSource": "twilio",
    "public": true
}

Then, in your models, you can use Twilio.send

Twilio.send(options, callback);

I believe I've got my Docusign connector set up to work similarly.

Unfortunately, when I add docusign to my datasources.json and to my model-config.json, I get the following error.

/Users/DudeOfAwesome/Github/loopback-connector-docusign/node_modules/loopback/lib/registry.js:310
  throw new Error(g.f('Model not found: %s', modelName));
        ^
Error: Model not found: Docusign
    at Registry.getModel (/Users/DudeOfAwesome/Github/loopback-connector-docusign/node_modules/loopback/lib/registry.js:310:9)
    at /Users/DudeOfAwesome/Github/loopback-connector-docusign/node_modules/loopback-boot/lib/executor.js:233:24
    at Array.forEach (native)
    at defineModels (/Users/DudeOfAwesome/Github/loopback-connector-docusign/node_modules/loopback-boot/lib/executor.js:228:23)
    at setupModels (/Users/DudeOfAwesome/Github/loopback-connector-docusign/node_modules/loopback-boot/lib/executor.js:196:3)
    at execute (/Users/DudeOfAwesome/Github/loopback-connector-docusign/node_modules/loopback-boot/lib/executor.js:39:3)
    at bootLoopBackApp (/Users/DudeOfAwesome/Github/loopback-connector-docusign/node_modules/loopback-boot/index.js:154:3)
    at Object.<anonymous> (/Users/DudeOfAwesome/Github/loopback-connector-docusign/example/server/server.js:22:1)
    at Module._compile (module.js:556:32)
    at Object.Module._extensions..js (module.js:565:10)

When I don't add the snippet to the model-config.json, then the connector initializes correctly.