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Deprecate DropdownButtonFormField "value" parameter in favor of "initialValue" #170805

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Deprecate DropdownButtonFormField "value" parameter in favor of "initialValue" #170805

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@bleroux bleroux commented Jun 18, 2025

Description

This PR renames the DropdownButtonFormField constuctor parameter 'value' to 'initialValue'.
See #170050 (comment) and #170050 (comment) for some context.

Related Issue

Fixes DropdownButtonFormField retains selected value even after setting value to null

Tests

Adds 2 tests (one to validate the deprecated parameter can still be used, one for the dart fix).
Updates many (renaming the confusing parameter).

@github-actions github-actions bot added framework flutter/packages/flutter repository. See also f: labels. f: material design flutter/packages/flutter/material repository. d: api docs Issues with https://api.flutter.dev/ d: examples Sample code and demos c: tech-debt Technical debt, code quality, testing, etc. labels Jun 18, 2025
@bleroux bleroux force-pushed the add_DropdownButtonFormField_initialValue_parameter branch from 46619bf to 905065d Compare June 18, 2025 14:36
@dkwingsmt dkwingsmt changed the title Deprecate DropdownDownFormField "value" parameter in favor of "initialValue" Deprecate DropdownButtonFormField "value" parameter in favor of "initialValue" Jun 18, 2025
@dkwingsmt dkwingsmt requested a review from justinmc June 18, 2025 18:24
@bleroux bleroux force-pushed the add_DropdownButtonFormField_initialValue_parameter branch from 905065d to ff71001 Compare June 18, 2025 20:28
@bleroux bleroux force-pushed the add_DropdownButtonFormField_initialValue_parameter branch from ff71001 to 60181fd Compare June 18, 2025 21:30
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c: tech-debt Technical debt, code quality, testing, etc. d: api docs Issues with https://api.flutter.dev/ d: examples Sample code and demos f: material design flutter/packages/flutter/material repository. framework flutter/packages/flutter repository. See also f: labels.
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DropdownButtonFormField retains selected value even after setting value to null
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@bleroux