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Add a message to an assertion #1355

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Jan 24, 2024
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Add a message to an assertion #1355

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6 changes: 5 additions & 1 deletion lib/src/form_builder.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,11 @@ class FormBuilderState extends State<FormBuilder> {
}

void unregisterField(String name, FormBuilderFieldState field) {
assert(_fields.containsKey(name));
assert(
_fields.containsKey(name),
'Failed to unregister a field. Make sure that all field names in a form are unique.',
);

// Only remove the field when it is the one registered. It's possible that
// the field is replaced (registerField is called twice for a given name)
// before unregisterField is called for the name, so just emit a warning
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