dotnet/aspnetcore

Support asp-items for datalist element

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#7,663 opened on Feb 17, 2019

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 (21 comments) (21 reactions) (0 assignees)C# (10,653 forks)batch import
Priority:2affected-mediumarea-mvcenhancementfeature-mvc-razor-viewshelp wantedseverity-minor

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Description

The <datalist> element can be used to create a HTML-only "type-to-select" drop-down list (aka combobox with input enabled).

The elements with the <datalist> tag are of type <option>, just like those that would be in a <select> list, which is supported by the asp-items Razor tag helper.

e.g. it would be great to be able to turn

<select asp-for="Customer" asp-items="Customers"></select>

into

<input list="customers" asp-for="Model.Customer" />
<datalist id="customers" asp-items="Model.Customers"></datalist>

But perhaps it would be necessary for the tags to be coalesced into one, so that one need not type out and match the id tag, in which case it might look something like this:

<input asp-for="Model.Customer" asp-items="Model.Customers" />

Contributor guide

Research direction
Examine the existing `asp items` tag helper implementation for `<select>` and adapt it to work with `<datalist>` elements, possibly creating a new tag helper or extending the existing one. Ensure the `id` and `list` attributes are properly linked or consider coalescing the input and datalist tags.
Tech stack
csharp
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C#ASP.NET Core
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65