Adding Getters and Setters

You're doing great. 0:00 There are four more properties, two arrays, instructions and tags, and 0:01 two strings, yield and source. 0:06 Do you have to add getters and setters for all the properties? 0:08 What if you don't care about doing anything with the property 0:13 before it gets set? 0:15 Can't we just leave those properties public? 0:17 You could. 0:19 However, there are two big reasons why that's probably not the best option. 0:21 First of all, consistency. 0:26 Since some of our properties are accessed through getters and 0:28 setters, it's a good idea to access all properties the same way. 0:31 Second, just because there isn't anything we want to do with the incoming data right 0:36 now, that doesn't mean there won't be something we want to do in the future. 0:41 By setting up the getters and 0:46 setters now, if we want to do something with that incoming data in the future, 0:47 we won't have to change the way we interact with the object. 0:52 Let's get started. 0:56 Back in our recipe class, we'll start by changing the visibility of the rest of 0:58 the properties from public to private. 1:02 Now we can add getters and setters for those properties. 1:18 The next one in the list is instructions. 1:21 Let's implement this as a single dimension array of strings. 1:24 We'll start with public function addInstructions. 1:29 We'll do addInstruction singular so we can add our instructions one at a time. 1:39 We want to accept a string argument. 1:44 Then we can add this new instruction to our array of instructions. 1:51 We also need to add a getter method, 2:01 so let's add a public function getInstructions. 2:04 And then we return $this->instructions. 2:14 Back in our cookbook file, let's add and display the instructions. 2:20 This is my first instruction. 2:36 We'll add another one too. 2:43 This is my second instruction. 2:51 We can then call an implode on the get instructions. 2:57 We'll separate this with a new line. 3:04 Let's change this to recipe1 as well. 3:16 Now let's try running our script. 3:18 Hm, line five, let's take a look. 3:27 We're trying to set our source. 3:31 Let's comment out this line. 3:34 Line 11 as well. 3:39 Great, now we see My First Recipe. 3:43 One egg, two cups flour. 3:46 This is my first instruction. 3:49 And this is my second instruction. 3:50 Let's move on to our tags. 3:52 Tags are also a single dimension array of strings. 3:54 But I want to make sure that all my tags are lowercase, so let's add that. 3:57 Public function addTag. 4:07 Then we're going to set our array tags, 4:19 To a strtolower($tag). 4:25 And now for our getter, public function getTags() 4:31 return $this->tags. 4:40 Let's switch back over to the cookbook and add some tags. 4:45 We can then implode on our tags. 5:12 This time we'll separate it with a comma. 5:18 GetTags(). 5:25 And run our script. 5:29 Great, we see our breakfast and 5:32 main course tags added at the end, and they're lowercase. 5:34 All we have left are the two strings, yield and source. 5:39 Let's add both of these before we test it out. 5:43 Since I don't really want to do anything to yield right now, these will be a basic 5:50 getter and setter that will pass through directly to our property. 5:53 So we'll do public function setyield. 5:57 We'll pass in the yield and we'll assign it to our yield property. 6:04 We'll also add our getter. 6:18 And we return our yield property. 6:25 The last property is source. 6:34 This will be either a publication or a person's name. 6:37 So title case like we did for the title seems like a good choice for this too. 6:40 Let's add public function setSource. 6:44 We'll pass in the source. 6:50 And then we'll set our property. 6:54 We want to ucwords, or uppercase words, and pass the source. 6:59 Now let's add the getter. 7:07 Great, let's go back to our cookbook and add our yield and our source. 7:21 We had our sources up here, so let's change this. 7:26 setSource and setSource. 7:31 And then let's add our yield. 7:38 SetYield. 7:51 And then echo. 7:59 We also wanna return the source, so echo. 8:06 And now let's run our script. 8:17 We see our yield and source now too. 8:22 We have all the pieces set up. 8:25 We're ready to finish displaying the entire recipe 8:27 with a little formatting to enhance the readability. 8:29