Oliver Sarfas • September 1, 2019

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Laravel web development So you want to learn how to satisfy those data cravings, and want to do it all inside of a single Laravel command? Then you’ve come to the right place! Website scraping (in general terms) is the extraction of data from any given website.

Jan 08, 2020 Hello Friends, I'm Pankaj Sood, Full Stack Web Developer. Expertise in WordPress, PHP, Laravel, Angular, and Frontend Development. I'm building this site only to spread knowledge to the other user. And need your support to make this more flexible. So feel free to contact me, you can also submit your feedback using the contact us page.

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I was involved recently in a Hackathon, more specifically LaraHack. The theme was Community. Many took this as a theme to bring people together through a social media, or chat interface. I went through a different route, and found a use for a tool, that I'd never considered before.

I decided to go through the route of building a site in tribute to the US TV Show, Community. Web scraping python beautifulsoup selenium. For this, I needed a database full of every scripted line from the show, along with the episode and associated series that the line was said in. After some looking around, I googled 'Community TV Show full scripts, first link 😆, I came across this.

🎉 Jackpot 🎉

All the lines, episode names, and seasons. Now, all I need to do is get that data. There is no way that I was going to click through every single episode, copy and paste the script, then extract EACH AND EVERY LINE.

Automating the 'extraction'

At a previous role, I had to automate a web based process - logging into a solution, doing some administration, then logging out. We achieved this using Selenium, and a couple of other tools. I always wanted to achieve this with PHP however as it's my preferred language.

This made me consider using Laravel Dusk to automate / scrape the data from my script pages.

Dusk allows developers to build browser based tests to ensure that pages and solutions work as intended throughout the development process. For instance, you can tell your test to _go to page and make sure that the <h1> tag says 'Expected Title'. Taking this to the next level, you can also get the test to pull out the content of any given Query Selector.

So by using this, I can automate the process of hitting each script page, and pulling the content from a specific element on the page. This even works for SPAs - as you can tell the browser to wait for JS.

What pages do we hit?

There is a little human requirement to this - determining the pages to be hit. In my case, I wanted to hit a url with a query string of the episode and season number. So I had to establish how many seasons there were, and how many associated episodes to that season existed.

I knew from personal experience that there are 6 seasons of the hit show. I just needed to know how many episodes. So I went on IMDB and jotted the numbers down. Created some seeders to populate some models, and bash - I was ready to go.

Seeders

Here's my seeder, which populated my database ready for the main data extraction;

The Dusk Test

So, I wrote myself some test logic that would creates Lines for each episode, and store it in the database, here it is'

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Explanation of Logic

$s = str_pad($episode->season_id, 2, 0, STR_PAD_LEFT);

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$e = str_pad($episode->episode_number, 2, 0, STR_PAD_LEFT);

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Here I pad the episode and season numbers with a leading 0 (where necessary). This is due to the way the script website accepts it's parameters. i.e. I want to see S01E01, not S1E1.

We grab the script for the episode, break it into lines and iterate over the loop. The save each line to the database, and associate it to the episode that we're in.

Using Laravel Dusk has it's perks for this kinda thing, however it does have it's drawbacks.

You can't use Laravel Dusk in a Production environment.
Getting the selector's for your browser elements can be a PITA. Especially if the site doesn't use HTML ID tags or classes.
If the site changes, you need to update your tests

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However, I must say I like this method as an 'intial hit' for a database build, and then copying / exporting the database to a production environment. Using this method I can get ALL the episodes, lines, and episode names in under 2 minutes - far faster than doing it manually

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