Fix initialValue check

[DimitryDushkin]

Currently there is no way set default value for SelectField, because its value by default is '' (empty string) which is not equal to undefined.

[radekmie]

Could make a reproduction? Or at least share schema and/or used form?

[radekmie]

This should be changed - if a field has a falsy value, like false and initialValue equal to true, it will cause a problem. Empty string is caused by ensureValue: true - this flag is used to avoid undefined in HTML inputs.

I'd suggest

- if (props.value === undefined && props.required) {
+ if (props.required && (this.options.ensureValue ? props.value === '' : props.value === undefined)) {

[DimitryDushkin]

I'm using graphql, so there is no default value in schema. Component looks like following:

<AutoForm
    ref={ ref => formRef = ref }
    schema={ bridge }
    onSubmit={ this.onSubmit }>
    <SelectField
        name='adapterset'
        allowedValues={ adaptersetOptions }
        transform={ getEnumOption.bind(this, sampleEnums.adapterset) }
        initialValue='ILLUMINA_GENERIC'
        required={ true } />
</AutoForm>

Schema:

        input SampleInput {
            adapterset: String!
        }

Your suggestion looks good, I'll rewrite commit.

[radekmie]

1. OK.
2. Wait, what?
3. I've never thought about passing initialValue to the component!
4. To be honest, that's a very good idea!
5. I'm really glad to see, that you are using GraphQL with uniforms!
6. If you are using GraphQL schema, then you can use third parameter of GraphQLBridge (example here).

[DimitryDushkin]

6. Oh, I missed that option( I think this better then inlining allowedValues and such in components (separation of concerns and such 😃 ).

I've rewritten commit.

[DimitryDushkin]

BTW graphql intergation works quite good with form! Thank you for this.)
The only "problem" I've faced — warning from webpack of not presence dependency of simpl-schema module. I'll try to send PR on this someday.)

[radekmie]

I've tried to get rid of it and failed few times so far. If you could handle it or help to do so - I'd love to help.