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Validation with Regular Expressions

Ragic provides a simple validation mechanism via regular expressions. If you know how to write regular expressions, you can create a regular expression to check if the user input is valid.

If you are not familiar with regular expressions, you can still choose a validation template from the sample box or apply conditional formulas as workaround.

AI Regular Expressions Generator

You can ask AI to help you create regular expressions (regex). Your requirement should be concise and clear. For example, if you want to restrict the field value to have the first 3 characters as numbers and the last 3 characters as letters, you can simply specify it as "First 3 characters are numbers, last 3 characters are letters".

Click Generate Regex, it will automatically create a regular expression. Then, by clicking Copy to Validation Field, you can copy the syntax into the validation.

After finishing the configuration, remember to save the design.

Validating Unique Attributes

A common validation that our users usually need is to make sure that the field value stored has not been stored in the database before. This requires a backend database check, which cannot be done by regular expressions. You can simply go to the field configurations under the Basic tab in Field Settings, and check the Unique attribute. Ragic will then check if the value that the user has entered is unique. If not, the value will not be stored and the user will be prompted for the duplication.

Validating Number of Characters

You can use a regular expression in the validation tab for your field to validate the input.

The regular expression


validates that the field has a minimum of 6 characters and a maximum of 7.

Other than changing the set of numbers, you can also set it to a maximum, such as ^.{0,7}$ (a maximum of 7 characters), or a minimum, ^.{6,}$ (a minimum of 6 characters).

Validating the Language of Input

You can ensure the user fills in a field in a certain language by using the validation feature by adding a regular expression that checks the input to be in a certain language code range.

For example, if you want to make sure the language is in Cyrillic, you can use:


Below is a list of language code ranges for each language. You can also go to this link for more references.

Code Language
0000-007F Basic Latin
0080-00FF Latin-1 Supplement
0100-017F Latin Extended-A
0180-024F Latin Extended-B
0250-02AF IPA Extensions
02B0-02FF Spacing Modifier Letters
0300-036F Combining Diacritical Marks
0370-03FF Greek and Coptic
0400-04FF Cyrillic
0500-052F Cyrillic Supplement
0530-058F Armenian
0590-05FF Hebrew
0600-06FF Arabic
0700-074F Syriac
0750-077F Arabic Supplement
0780-07BF Thaana
07C0-07FF NKo
0900-097F Devanagari
0980-09FF Bengali
0A00-0A7F Gurmukhi
0A80-0AFF Gujarati
0B00-0B7F Oriya
0B80-0BFF Tamil
0C00-0C7F Telugu
0C80-0CFF Kannada
0D00-0D7F Malayalam
0D80-0DFF Sinhala
0E00-0E7F Thai
0E80-0EFF Lao
0F00-0FFF Tibetan
1000-109F Myanmar
10A0-10FF Georgian
1100-11FF Hangul Jamo
1200-137F Ethiopic
1380-139F Ethiopic Supplement
13A0-13FF Cherokee
1400-167F Unified Canadian Aboriginal Syllabics
1680-169F Ogham
16A0-16FF Runic
1700-171F Tagalog
1720-173F Hanunoo
1740-175F Buhid
1760-177F Tagbanwa
1780-17FF Khmer
1800-18AF Mongolian
1900-194F Limbu
1950-197F Tai Le
1980-19DF New Tai Lue
19E0-19FF Khmer Symbols
1A00-1A1F Buginese
1B00-1B7F Balinese
1D00-1D7F Phonetic Extensions
1D80-1DBF Phonetic Extensions Supplement
1DC0-1DFF Combining Diacritical Marks Supplement
1E00-1EFF Latin Extended Additional
1F00-1FFF Greek Extended
2000-206F General Punctuation
2070-209F Superscripts and Subscripts
20A0-20CF Currency Symbols
20D0-20FF Combining Diacritical Marks for Symbols
2100-214F Letterlike Symbols
2150-218F Number Forms
2190-21FF Arrows
2200-22FF Mathematical Operators
2300-23FF Miscellaneous Technical
2400-243F Control Pictures
2440-245F Optical Character Recognition
2460-24FF Enclosed Alphanumerics
2500-257F Box Drawing
2580-259F Block Elements
25A0-25FF Geometric Shapes
2600-26FF Miscellaneous Symbols
2700-27BF Dingbats
27C0-27EF Miscellaneous Mathematical Symbols-A
27F0-27FF Supplemental Arrows-A
2800-28FF Braille Patterns
2900-297F Supplemental Arrows-B
2980-29FF Miscellaneous Mathematical Symbols-B
2A00-2AFF Supplemental Mathematical Operators
2B00-2BFF Miscellaneous Symbols and Arrows
2C00-2C5F Glagolitic
2C60-2C7F Latin Extended-C
2C80-2CFF Coptic
2D00-2D2F Georgian Supplement
2D30-2D7F Tifinagh
2D80-2DDF Ethiopic Extended
2E00-2E7F Supplemental Punctuation
2E80-2EFF CJK Radicals Supplement
2F00-2FDF Kangxi Radicals
2FF0-2FFF Ideographic Description Characters
3000-303F CJK Symbols and Punctuation
3040-309F Hiragana
30A0-30FF Katakana
3100-312F Bopomofo
3130-318F Hangul Compatibility Jamo
3190-319F Kanbun
31A0-31BF Bopomofo Extended
31C0-31EF CJK Strokes
31F0-31FF Katakana Phonetic Extensions
3200-32FF Enclosed CJK Letters and Months
3300-33FF CJK Compatibility
3400-4DBF CJK Unified Ideographs Extension A
4DC0-4DFF Yijing Hexagram Symbols
4E00-9FFF CJK Unified Ideographs
A000-A48F Yi Syllables
A490-A4CF Yi Radicals
A700-A71F Modifier Tone Letters
A720-A7FF Latin Extended-D
A800-A82F Syloti Nagri
A840-A87F Phags-pa
AC00-D7AF Hangul Syllables
D800-DB7F High Surrogates
DB80-DBFF High Private Use Surrogates
DC00-DFFF Low Surrogates
E000-F8FF Private Use Area
F900-FAFF CJK Compatibility Ideographs
FB00-FB4F Alphabetic Presentation Forms
FB50-FDFF Arabic Presentation Forms-A
FE00-FE0F Variation Selectors
FE10-FE1F Vertical Forms
FE20-FE2F Combining Half Marks
FE30-FE4F CJK Compatibility Forms
FE50-FE6F Small Form Variants
FE70-FEFF Arabic Presentation Forms-B
FF00-FFEF Halfwidth and Fullwidth Forms
FFF0-FFFF Specials

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