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|  How to Access Instagram Photos Using Instagram API in Ruby

How to Access Instagram Photos Using Instagram API in Ruby

October 31, 2024

Explore step-by-step guidance for using Ruby to access Instagram photos via the Instagram API, from setup to retrieving images efficiently.

How to Access Instagram Photos Using Instagram API in Ruby

 

Install Required Gems

 

  • Start with installing the `http` and `json` gems, which help facilitate API requests and parsing JSON responses. Include them in your Gemfile or install them directly using the command line.
  •  

  • Execute the installation command for gems if you choose direct installation:

 

gem install http
gem install json

 

Authenticate Instagram API

 

  • To interact with Instagram, you need an access token. This token can be obtained through Instagram's OAuth system.
  •  

  • First, obtain your Client ID and Client Secret from the Instagram Developer portal after setting up your application.
  •  

  • Direct users to the Instagram authorization URL to get their permission to access their photos. Here's an example URL pattern:

 

auth_url = "https://api.instagram.com/oauth/authorize?client_id=#{CLIENT_ID}&redirect_uri=#{REDIRECT_URI}&scope=user_profile,user_media&response_type=code"

 

  • After authorization, exchange the received authorization code for an access token using a POST request to Instagram's token endpoint:

 

require 'http'

response = HTTP.post("https://api.instagram.com/oauth/access_token", form: {
  client_id: CLIENT_ID,
  client_secret: CLIENT_SECRET,
  grant_type: 'authorization_code',
  redirect_uri: REDIRECT_URI,
  code: 'AUTH_CODE_RECEIVED'
})

access_token = JSON.parse(response.body.to_s)["access_token"]

 

Make API Requests to Fetch Photos

 

  • Use the access token to make requests to Instagram's API. To fetch a user's photos, you'll interact with the `user_media` endpoint.
  •  

  • Here's an example of how to make a GET request to fetch the photos:

 

require 'json'
require 'http'

def fetch_instagram_photos(access_token)
  response = HTTP.auth("Bearer #{access_token}")
                 .get("https://graph.instagram.com/me/media", params: { fields: 'id,caption,media_url,permalink' })
  
  JSON.parse(response.body.to_s)["data"]
end

photos = fetch_instagram_photos(access_token)
photos.each do |photo|
  puts "Caption: #{photo['caption']}"
  puts "Image URL: #{photo['media_url']}"
  puts "Permalink: #{photo['permalink']}"
end

 

Handling Errors

 

  • API calls may fail for various reasons such as rate limits, expired tokens, or invalid requests. Check the HTTP status code and response body for error details.
  •  

  • Implement a basic error handling strategy to address common issues:

 

def fetch_instagram_photos_with_error_handling(access_token)
  response = HTTP.auth("Bearer #{access_token}")
                 .get("https://graph.instagram.com/me/media", params: { fields: 'id,caption,media_url,permalink' })

  if response.status.success?
    JSON.parse(response.body.to_s)["data"]
  else
    puts "Error: #{response.status}"
    puts JSON.parse(response.body.to_s)["error"]["message"]
    []
  end
end

 

Further Customizations

 

  • Expand your application's functionality according to your needs. You might want to save images locally, display them in a web application, or analyze engagement data.
  •  

  • Consider implementing pagination if you need to access a large number of photos due to Instagram's pagination on user media.
  •  

  • Remember to update your access token regularly, as Instagram tokens have an expiration time.

 

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