Frankieforms

Form Validation

Available rules

Rule	Options	Description
"required"	—	Value must be non-nil and non-empty
"min_length"	value: n	At least n characters
"max_length"	value: n	At most n characters
"email"	—	Must match word@word.word
"min_value"	value: n	Integer value ≥ n
"max_value"	value: n	Integer value ≤ n
"numeric"	—	Must be a number (int or float)
"alpha"	—	Letters only
"matches_pattern"	value: pat, message: msg	Must match regex pattern

Functions

validate(form, rules)

Returns a Hash of {field: error_message} pairs.

Empty hash = all valid.

stitch "frankieforms"

form  = {name: "A", email: "alice@example", age: ""}
rules = {
  name:  [{rule: "required"}, {rule: "min_length", value: 2}],
  email: [{rule: "required"}, {rule: "email"}],
  age:   [{rule: "required"}, {rule: "min_value", value: 18}]
}

if valid?(form, rules) == false
  validate(form, rules).each do |field, msg|
    puts "#{field}: #{msg}"
  end
end

→ name: must be at least 2 characters
→ email: must be a valid email address 
→ age: is required

valid?(form, rules)

Returns true if no errors.

stitch "frankieforms"

form  = {name: "Alice", email: "alice@example", age: "25"}
rules = {
  name:  [{rule: "required"}, {rule: "min_length", value: 2}],
  email: [{rule: "required"}, {rule: "email"}],
  age:   [{rule: "required"}, {rule: "min_value", value: 18}]
}

puts valid?(form, rules)

→ true