Get in depth with one serialization setting that prevents problems when serializing Entity Framework entities with navigation properties.
- [Lecturer] We've seen in theory…why the reference loop handling setting is so important,…so now let's look at an example of it in code.…To start we'll add a couple of navigation properties…between our tour and reservation entities.…Here in the reservation entity, let's add…a public tour property called tour.…And, in the tour entity, let's add a public property…which is a list of reservation, called reservations.…
Now we should be able to load these navigation properties…up in our queries.…Back in the context class for Entity Framework,…I wanted to point out that as we discussed earlier,…I've disabled lazy loading so that the navigation…properties that we just added,…won't be loaded automatically under any circumstances.…Now if we go to the reservation controllers,…get all method, and we can add and include here,…and we can tell it we want to include…all the tour for the reservations.…
Now let's go test that in Postman.…When we submit a request to the get all method…in the reservations controller,…you can now see that we get an error back that says,…
Author
Released
10/17/2018- Convention-based routing
- Binding your code to an HTTP request
- Validating models
- Using attributes to route requests
- Customizing attribute routes
- Data serialization and model binding
- Error handling
- Using exception filters and exception loggers
- API documentation and testing
- Securing your API
Skill Level Beginner
Duration
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Introduction
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The power of Web APIs1m 13s
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What you should know1m 22s
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1. Controllers and Actions
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Convention-based routing3m 28s
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Parameter binding conventions10m 59s
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Parameter binding attributes1m 39s
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HTTP verb attributes3m 6s
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Return values9m 23s
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Validating models4m 51s
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Using formats besides JSON2m 43s
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2. Routing
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Routing table6m 41s
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Attribute routing4m 27s
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Customizing attribute routes4m 34s
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3. Data Serialization and Model Binding
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Models and DTOs5m 22s
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Useful Json.NET settings5m 46s
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4. Error Handling
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Using HttpResponseException2m 33s
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Using exception filters7m 26s
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Using exception loggers4m 6s
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Global exception handler6m 47s
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5. API Documentation and Testing
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Documenting with help pages6m 55s
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API testing client Postman7m 33s
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6. Security
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Authorize attribute2m 5s
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AllowAnonymous attribute1m 35s
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Setting user principal4m 30s
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Overview of JSON web tokens3m 22s
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JWT in action8m 23s
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Conclusion
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Next steps1m 38s
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Video: Reference LoopHandling in action