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frontend-app-learning/docs/decisions/0006-thunk-and-api-naming.md
David Joy 73c74119f0 Organizationing (#102)
* Moving model-store into “generic” sub-directory.

Also adding a README.md to explain what belongs in “generic”

* Moving user-messages into “generic” sub-directory.

* Moving PageLoading into “generic” sub-directory.

* Moving “tabs” module into “generic” sub-directory.

* Moving InstructorToolbar and MasqueradeWidget up to instructor-toolbar.

The masquerade widget is a sub-module of instructor-toolbar.

* Co-locating celebration APIs with celebration utils.

Also adding an ADR about thunk/API naming conventions and making some other areas of the code adhere to it.

* Moving courseware data (thunks, api) into the courseware module.

Note that cousre-home/data/api still uses normalizeBlocks - this should be fixed so it’s not reaching across.  Maybe we pull that particular API up top.

This PR includes a few TODOs for things I saw, as well as a tiny bit of whitespace cleanup.
2020-07-02 13:11:50 -04:00

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# Naming API functions and redux thunks
Because API functions and redux thunks are two parts of a larger process, we've informally settled on some naming conventions for them to help differentiate the type of code we're looking at.
## API Functions
This micro-frontend follows a pattern of naming API functions with a prefix for their HTTP verb.
Examples:
`getCourseBlocks` - The GET request we make to load course blocks data.
`postSequencePosition` - The POST request for saving sequence position.
## Redux Thunks
Meanwhile, we use a different set of verbs for redux thunks to differentiate them from the API functions. For instance, we use the `fetch` prefix for loading data (primarily via GET requests), and `save` for sending data back to the server (primarily via POST or PATCH requests)
Examples:
`fetchCourse` - The thunk for getting course data across several APIs.
`fetchSequence` - The thunk for the process of retrieving sequence data.
`saveSequencePosition` - Wraps the POST request for sending sequence position back to the server.
The verb prefixes for thunks aren't perfect - but they're a little more 'friendly' and semantically meaningful than the HTTP verbs used for APIs. So far we have `fetch`, `save`, `check`, `reset`, etc.