Question 1

How to validate MongoDB update documents with SimpleSchema?

Accepted Answer

Use the validate method with the { modifier: true } option. SimpleSchema understands MongoDB operators and ensures the resulting document is valid after the update, as shown in the quick start examples.

Question 2

SimpleSchema vs yup: which is better?

Accepted Answer

SimpleSchema excels at MongoDB update validation and automatic cleaning, making it ideal for MongoDB-heavy apps. Yup is lighter and faster for general validation, so choose based on your database and performance needs.

Question 3

How to add custom validation in SimpleSchema?

Accepted Answer

Define a custom function in the schema rule or use addValidator. The function can access sibling fields via this.siblingField() and return error types, as detailed in the custom validation section.

Question 4

Does SimpleSchema work with React or Vue?

Accepted Answer

Yes, it's isomorphic and can be used in browsers. While it integrates seamlessly with Meteor, it can be adapted for modern frontend frameworks, though form handling may require additional setup.

Question 5

How to handle conditional required fields?

Accepted Answer

Set optional: true and use a custom validation function that checks conditions, like comparing sibling fields. The README provides a code example for making fields required based on other values.

Question 6

Is SimpleSchema still maintained?

Accepted Answer

Yes, with over 10 years of maintenance, nearly 500 tests, and usage in production apps like Mailchimp Open Commerce, it's mature and actively supported, as noted in the features.

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