rails validate not null

If these validations produce any errors, Rails does not save the object. Yo...

If these validations produce any errors, Rails does not save the object. You can also run ActiveRecord::RecordInvalid: Validation failed: Name can't be blank.‎Validations Overview · ‎Validation Helpers · ‎Strict Validations · ‎Conditional Validation.

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You might need to do a custom validation for this: If you just want to vali...

You might need to do a custom validation for this: If you just want to validate that the field is not null, but don't care about blank/empty strings.

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Rails adds the handy method blank? which checks for false, nil and empty Th...

Rails adds the handy method blank? which checks for false, nil and empty This helper validates that the specified attributes are not empty.

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Yes, there are two possible options that you can pass to validations for wh...

Yes, there are two possible options that you can pass to validations for which will skip the validations on blank and nil fields, respectively.

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is telling the database not to accept null values. Whereas, validates:user,...

is telling the database not to accept null values. Whereas, validates:user, presence: true is like telling the Rails app to not accept null values.

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presence: true # nil and empty string fail validation presence: true, allow...

presence: true # nil and empty string fail validation presence: true, allow_blank: true # nil fails validation, empty string passes.

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def validate if dwn.220.v.ua? and dwn.220.v.ua? and dwn.220.v.ua? # dwn.220...

def validate if dwn.220.v.ua? and dwn.220.v.ua? and dwn.220.v.ua? # dwn.220.v.ua_to_base("You must fill in at least one field") end end.

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This should do the trick. validates:email:presence => {:message => &q...

This should do the trick. validates:email:presence => {:message => "Your email is used to save your greeting."}:allow_blank => true.

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Validates that the specified attributes are not blank (as defined by Object...

Validates that the specified attributes are not blank (as defined by Object#blank?), and, if the attribute is an association, that the associated object is not marked.

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Well, empty string "" has zero length and it's not nil (try ...

Well, empty string "" has zero length and it's not nil (try to call method acapilleri added a commit to acapilleri/rails that referenced this issue on.

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Rails Ruby Shoulda-matchers I have a model Daemon . Uniqueness validations ...

Rails Ruby Shoulda-matchers I have a model Daemon . Uniqueness validations pg non-null error for wrong column #

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allow_blank doesn't do anything when validating presence, which seems ...

allow_blank doesn't do anything when validating presence, which seems sensible to Allow nil values but not zero length strings validates_length_of:title, allows for +nil+, but any other +blank?+ value will still be rejected.

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So the validation fails because the attribute is not nil. started using Rai...

So the validation fails because the attribute is not nil. started using Rails was trying to validate the format of attributes that When this model is used in a form, validation will fail if the social security number field is left blank.

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Active Record's #valid? will run all validations whereas Mongoid'...

Active Record's #valid? will run all validations whereas Mongoid's #valid? will Validate items are not in a list. :allow_blank # Whether the field can be blank.

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Validations in Rails allow you to make sure that your users are entering Th...

Validations in Rails allow you to make sure that your users are entering This will only check the validation if the field is not blank and can be.

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