Modern APIs with FastAPI and Python Transcripts
Chapter: Course conclusion and review
Lecture: Review: Modifying data through the API

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0:00 We spent much of the time with our API
0:01 just trying to talk to it and have it give us answers.
0:04 Give us the weather in a location,
0:07 maybe converting that over correctly and so on.
0:09 But eventually we said, Hey,
0:10 it'd be great if the applications could submit data to the API,
0:14 and actually make changes to our in-memory data,
0:16 which ultimately would be a real database.
0:18 So in order to do that,
0:20 we set up a couple of pydantic models.
0:22 We already had location, which derives from base model with a city, country, and state.
0:27 We were using this for our search,
0:29 and we said we're gonna also have the ability to submit a weather report which has
0:33 a location. Notice how we're leveraging here
0:37 the other pydantic model in a hierarchical way for location.
0:40 It also has a description and
0:43 pydantic can keep this all together.
0:44 And then for our API endpoint,
0:47 we just say it takes a report,
0:48 which is one of these types, a report submittal we called it,
0:52 and then it will automatically take that data that's submitted over, with the description and embedded
0:57 location, and convert that and validate that exactly like we expected.
1:01 The other thing to note is our http verb, we're no longer doing router.get,
1:06 we're doing router.post, that means were changing something.
1:10 Also what we ended up doing in our example,
1:12 I didn't make it to the slides
1:14 here, is on the router.post decorator
1:17 we said the status code is 201 by default.
1:20 So if things go well, don't say 200
1:21 ok, that's not normally the response from a post. 201 created so we
1:25 can have it automatically do that when everything works out.