Property formatters, constraints

[fabien]

Where does the actual implementation of property formatters (trim, uppercase, ...) come from? Is it provided by a connector (or a database engine itself)? I could not find any references in-code, and it'd be interesting to be able to provide your own formatters (like urlify/slugify for example).

[fabien]

@bajtos @ritch @raymondfeng I believe that the docs are incorrect, as I cannot find any references in the source code (of datasource-juggler and loopback itself) regarding:

pattern, min/max, length, trim, lowercase, uppercase, format

I would have expected the constraints to add the right validations. Additionally, you'd expect a property with type=number to apply validatesNumericalityOf and so forth.

Constraints

Constraints are modeled as options too, for example:

• default: The default value of the property
• required: Indicate if the property is required
• pattern: A regular expression pattern that a string should match
• min/max: The minimal and maximal value
• length: The maximal length of a string

Conversion and formatting

Format conversions can also be declared as options, for example:

• trim: Trim the string
• lowercase: Convert the string to be lowercase
• uppercase: Convert the string to be uppercase
• format: Format a Date

[raymondfeng]

We need to enhance the property handling to support the attributes for constraints and conversions.

[Klowner]

👍

[nathanmarks]

@raymondfeng Seems like this has been open a while -- shouldn't this be removed from the documentation in loopback? It caused me a lot of grief yesterday

[BerkeleyTrue]

@raymondfeng This should definitely be remove from docs.

[crandmck]

I "commented out" that section from http://docs.strongloop.com/display/LB/Model+definition+JSON+file, so it won't be visible to general viewers. Sorry it caused problems. Please mention or comment on strongloop/loopback#523 when this issue is fixed so I add the docs back once it actually works.

[leventgunay]

hello from the other side!! this feature would be really helpful, i guess. looking forward to your updates. thanks.