[docathon] Configuring assets guide (#23924)

## Summary & Motivation

First pass at a short-but-sweet asset config guide.

## How I Tested These Changes

## Changelog [New | Bug | Docs]

NOCHANGELOG

---------

Co-authored-by: Sandy Ryza <[email protected]>
Co-authored-by: Pedram Navid <[email protected]>

docs/docs-beta/docs/guides/data-modeling/configuring-assets.md

@@ -1,5 +1,43 @@
 ---
-title: Configuring assets and ops
-sidebar_label: Configuring assets
+title: Configuring assets via the UI
+sidebar_label: Configuring assets via the UI
 sidebar_position: 50
----
+---
+
+You will commonly want to manually materialize assets using the Dagster UI to backfill historical data, debug a production issue, or some other one-off task.
+
+Often, you will want to be able to tweak some parameters when materializing these assets. This can be accomplished through the asset configuration system.
+
+## What you'll learn
+
+- How to add configuration to your assets
+- How to modify the configuration when launching a run
+- When to use asset configuration vs. [resources](/docs/concepts/resources)
+
+---
+
+<details>
+  <summary>Prerequisites</summary>
+
+To follow the steps in this guide, you'll need:
+
+- A basic understanding of Dagster and assets. See the [Quick Start](/tutorial/quick-start) tutorial for an overview.
+- Familiarity with [Pydantic](https://docs.pydantic.dev/latest/)
+- An understanding of [Ops vs Assets](/concepts/ops-jobs/ops-vs-assets)
+</details>
+
+---
+
+## Adding configuration to assets
+
+For an asset to be configurable, you must first define a schema that inherits from the Dagster `Config` class. For example, let's say we want to allow users to change the lookback time window for an asset:
+
+<CodeExample filePath="guides/data-modeling/configuring-assets/config-schema.py" language="python" title="Adding configuration" />
+
+## Modifying the configuration when launching a run
+
+When launching a run using Dagster's Launchpad, you can provide a run config file as YAML or JSON that overrides the default configuration for your asset:
+
+<CodeExample filePath="guides/data-modeling/configuring-assets/run_config.yaml" language="yaml" title="Run config provided via UI" />
+
+Run configurations reference an `op` which is the underlying compute associated with an asset. See [the Ops vs Assets](/concepts/ops-jobs/ops-vs-assets) documentation for more information.

docs/docs-beta/src/components/CodeExample.tsx

@@ -15,7 +15,9 @@ const CodeExample: React.FC<CodeExampleProps> = ({filePath, language, title}) =>
     // Adjust the import path to start from the docs directory
     import(`!!raw-loader!/../../examples/docs_beta_snippets/docs_beta_snippets/${filePath}`)
       .then((module) => {
-        const lines = module.default.split('\n');
+        const lines = module.default.split('\n').map(line => {
+          return line.replaceAll(/#.*?noqa.*?$/g, "").trim();
+        });
         const mainIndex = lines.findIndex((line) => line.trim().startsWith('if __name__ == '));
         const strippedContent =
           mainIndex !== -1 ? lines.slice(0, mainIndex).join('\n') : module.default;

docs/vale/styles/config/vocabularies/Dagster/accept.txt

@@ -38,3 +38,5 @@ Twilio
 
 We have
 we have
+lookback
+Pydantic

examples/docs_beta_snippets/docs_beta_snippets/guides/data-modeling/configuring-assets/config-schema.py

@@ -0,0 +1,29 @@
+import dagster as dg
+
+
+class ForecastModelConfig(dg.Config):
+    # lookback_window_days defaults to 30, but can be
+    # overridden by the user. If you do not provide a
+    # default, the user will need to provide a value.
+    lookback_window_days: int = 30
+
+
+@dg.asset
+def forecast_model(config: ForecastModelConfig):
+    print("Forecasting over time window:", config.lookback_window_days)  # noqa: T201
+    # ...more code here
+
+
+defs = dg.Definitions(assets=[forecast_model])
+
+if __name__ == "__main__":
+    from pathlib import Path
+
+    import yaml
+
+    dg.materialize(
+        [forecast_model],
+        run_config=yaml.safe_load(
+            (Path(__file__).absolute().parent / "run_config.yaml").open()
+        ),
+    )

examples/docs_beta_snippets/docs_beta_snippets/guides/data-modeling/configuring-assets/run_config.yaml

@@ -0,0 +1,4 @@
+ops:
+  forecast_model:
+    config:
+      lookback_window_days: 7