RB: Get Posts

Full, runnable src of Get Posts can be downloaded as part of the RB tutorials repository.

Script

Create a filed called get_posts_by_category.rb.

This script will pick a method to call based on the arguments passed. The expected categories are:

• trending
• hot
• active
• created
• votes
• promoted
• children

We will base the name of the API method to execute on the provided argument. Once we know which method to execute, we can build the query options. The defaults for this script is limit: 10 and tag: ''.

For each post we retrieve, we are going to build up a summary to display the interesting fields. In this case, we’re interested in:

• Creation Timestamp
• Title
• Author
• Net Votes
• Number of replies
• If it’s promoted
• Number of words in the body
• Canonical URL

To Run

First, set up your workstation using the steps provided in Getting Started. Then you can create and execute the script (or clone from this repository):

git clone git@github.com:steemit/devportal-tutorials-rb.git
cd devportal-tutorials-rb/tutorials/04_get_posts
bundle install
ruby get_posts_by_category.rb trending 1 steem

Example Output

2018-05-24 06:38:33 UTC
  Post: New Phone App For Steemit - Wow!
  By: happymoneyman
  Votes: 1087
  Replies: 332
  Promoted: 0.001 SBD
  Words: 190
  https://steemit.com/steemit/@happymoneyman/new-phone-app-for-steemit-wow

Error Handling

We’re checking the result for error in case the remote node has an issue to raise. Normally, it will be nil, but if it’s populated, output error.message and exit.