在Bluemix中，如何从带有集成Cloudant DB的Python Flask应用程序中检索Cloudant数据？

Question

I have a Python Flask app with integrated Cloudant running in Bluemix. The Cloudant database consists of a few documents. Each document has a "name" and an "email" field in addition to the default _id and rev field.

Using the CouchDB interface I can easily print out the addresses of the db field

doc in db: docs +="<br>"+doc

gives the following result:

71076864699bfbd07b0f1684945e01ef _design/1e0c70cd2cad4211581be1c25adb1eea86d1b2f0 _design/3478963fd9207264b8ab48dbc23187ca9ad7204a

I now want to print out the actual values of the "name" and "email" fields. I can do that in the Cloudant UI with a Query or with an Index.

How do I run this Query or Index from my Python app to show the actual values of the name and email fields? What is the best practice?

Answer 1

You'll need to make HTTP requests to the proper Cloudant endpoints using the credentials and URL for your Cloudant database that is provisioned for your application (found in the VCAP_SERVICES Environment Variable).

We have an alpha-stage python library , which we encourage you to use. It can do basic things at the moment and reduces the amount of boilerplate code you will need.

Answer 2

This detailed Tutorial shows you how to do this.

You can also find the Cloudant Python Documentation here