feat(datetime): add default picker value input

[jacek-jaskolski]

Short description of what this resolves:

When datetime input has max value greater than current date its by default selected when datetime picker is opened.

Changes proposed in this pull request:

Added pickerDefault input which is selected if datetime has no value.

Ionic Version: 1.x / 2.x / 3.x
3.x

[AmitMY]

Looks good in first glance. I actually need it too.
Can you please add a test for the default value?

[jacek-jaskolski]

I've added the test. Sorry for multiple commits.

[dkarpik]

Any plans for merging this fix?

[zoinkydoink]

I also would like to know when this is being planned for release, having to set the controls value so I can have it as a default when it is used by the user is not very user friendly. Right now I am using the ngModel trick but that is not a good work around as I want my field to be empty but default to todays date when the user is ready to pick

[shyamal890]

+1

[mlynch]

Thanks for the PR, this has been superseded by the fix in 559f4d3. By default we'll set the value to the current time, or the max value supplied.

Note, to set the default value, you really should just use ngModel and set the value on model. That way it's actually reflected in your code.

[jacek-jaskolski]

@mlynch So can we now use max value and default selected date in picker would be current time?
As for you comment. I don't want to update the model because field can be optional. The idea is to make the field easy to use by the users. I want the picker to have a default time closest to the context they in but still user can not provide the date and ngModel should be empty.

[AmitMY]

@jacek-jaskolski Has a great use case here. The field has no value until opening, then has a default value given.

[mlynch]

Follow the issue for updates

[mlynch]

k will be merging this w/ my changes and will have a PR up today

[jacek-jaskolski]

Thanks @mlynch

[mlynch]

Cool this has been merged with a few updates. Use the initialValue attribute to set the initial value. The actual value of the control won't change unless you hit "done," and the control will automatically use the current time as the initial value if nothing was set, or the max value if the current time is after the max value.

How's that?

[jacek-jaskolski]

@mlynch This fixses our use case. Thank for the update!

[epiphanatic]

Is there an equivalent for this in V4?