IS there any way I could retrieve all the reviews of a business Using the API ?
The sample response here just shows 3
http://www.yelp.com/developers/documentation/v2/business
The Yelp API provides data from millions of businesses across the world. It contains data such as business ratings, reviews, locations, photos, and a plethora of other details. In this guide, you will learn everything you need to know to set up your own Yelp account and how to make requests with the Yelp API.
To use Yelp's API, you will need to create a new app through the developers portal. This will give you authentication keys that will grant you access to data through Yelp Fusion. Once completed, you'll get given a client ID and API Key. Although the API is free to access, there is a cap on daily API calls.
API, which is short for Application Program Interface, is a way for two pieces of software to “talk” with each other. With Yelp APIs, developers can integrate important data points from Yelp listings and show them in their own custom apps or websites. This includes things like a business's ratings, price, or category.
In v3
yelp has a reviews API and it returns only three
reviews per business.
Yelp Business Reviews v3
Unfortunately, yelp restricts reviews access via APIs. With the V2.0, it is restricted to just one review snippet, which is also truncated after 40 chars.
An alternate that you could try is to use web scraping platforms such as scrapy. Again, the challenge here is that, yelp changes its layout pretty often just to make sure you don't scrape out their data and hence, your scripts will likely fail after sometime.
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