Join Justin Schwartzenberger for an in-depth discussion in this video Use search params in GET calls, part of Angular 2 Essential Training.
- [Instructor] The get call in the media item service…is currently requesting all media items.…Let's refactor that to support URL search query values…and see how the angular HttpClient service…works with those.…The HttpClient get method supports a second parameter…for options that can be used to include search query data.…The mock backend supports filtering the media items list…by medium, so let's update the service get method…in the media-item.service.ts file…to take in a parameter named medium.…
Then in the method we need to create…a new variable named getOptions,…setting that to an object literal.…One of the option properties that the get method…can look for is the name params.…This can be an object literal that has…properties and values that represent the query params…that would be in an http get call.…So we can add a property named params…and set that equal to an object literal.…Since the backend supports a query param named medium,…we can add a property in that object named medium…and set that to the medium variable that we added…
Justin Schwartzenberger steps through the framework one feature at a time, focusing on the new component-based architecture of Angular 2. You'll learn what Angular is and what it can do, as Justin builds a full-featured web app from start to finish. After mastering the essentials, you can tackle the other project-based courses in our library and create your own Angular app.
- What is Angular?
- Setting up an Angular template
- Creating a component
- Binding events and properties
- Getting data to components
- Using directives and pipes
- Creating Angular forms
- Validating form data
- Understanding dependency injection
- Providing services
- Making HTTP calls
Skill Level Intermediate
Q: This course was updated on 03/01/2018. What changed?
A: The following topics were updated: directives and pipes, forms, dependency injection and services, HTTP, and routing.
1. Architecture Overview
3. Directives and Pipes
5. Dependency Injection and Services
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