fix: list options require a parent selection list #9899
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* Since the `MatListOption` component requires a parent `MatSelectionList`, the DI of the selection list shouldn't be optional. Otherwise there will be runtime exceptions due to an undefined selection list property.
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@jelbourn I've marked this as a patch now (see PR description). |
andrewseguin
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Feb 20, 2018
Since the `MatListOption` component requires a parent `MatSelectionList`, the DI of the selection list shouldn't be optional. Otherwise there will be runtime exceptions due to an undefined selection list property.
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MatListOptioncomponent requires a parentMatSelectionList, the DI of the selection list shouldn't be optional. Otherwise there will be runtime exceptions due to an undefined selection list property.@jelbourn @crisbeto Technically this is a breaking change, because before you could theoretically place a
<mat-list-option>element without a list. This shouldn't be the case though, because there would be too many runtime exceptions. Also instead of Angular's defaultNo providermessage, we could have a custom one, to make it more clear what's going on.