Not reflecting the field restriction while adding field constraints to a Schema

Question

I am using SDL WEB 8.1.

I am trying to add the schema field restriction to Text type field. Restriction of field is minimum and maximum 12 characters.

I have an idea to implement using GUI extension but the requirement via xsd change in schema.

I have followed the below links information but not able to achieve, could you please help me out.

1. How to add field constraints to a Schema
2. http://nunolinhares.blogspot.co.uk/2012/07/validating-content-on-save-part-1-of.html

Taken from comments

 <xsd:schema xmlns:xsd="w3.org/2001/XMLSchema"; xmlns="uuid:7176e2ea-b262-458d-a692-87947328b203" xmlns:tcmi="tridion.com/ContentManager/5.0/Instance"; elementFormDefault="qualified" targetNamespace="uuid:7176e2ea-b262-458d-a692-87947328b203"> <xsd:import namespace="tridion.com/ContentManager/5.0/Instance"; schemaLocation="cm_xml_inst.xsd"></xsd:import> <xsd:annotation> <xsd:appinfo> <tcm:Labels xmlns:tcm="tridion.com/ContentManager/5.0">; <tcm:Label ElementName="txtAlpha" Metadata="false">Enter the text</tcm:Label> </tcm:Labels> </xsd:appinfo> </xsd:annotation> <xsd:element name="txtEmailContent"> <xsd:complexType> <xsd:sequence> <xsd:element name="txtAlpha" minOccurs="0" maxOccurs="1" type="xsd:normalizedString"> <xsd:annotation> <xsd:appinfo> <tcm:ExtensionXml xmlns:tcm="tridion.com/ContentManager/5.0"></…; </xsd:appinfo> </xsd:annotation> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element>
<xsd:simpleType name="datatypeString"> <xsd:annotation> <xsd:documentation> Alpha Numeric field of length 4-10 characters</xsd:documentation> </xsd:annotation> <xsd:restriction base="xsd:normalizedString"> <xsd:minLength value="4"></xsd:minLength> <xsd:maxLength value="10"></xsd:maxLength> </xsd:restriction> </xsd:simpleType> </xsd:schema>

Answer 1

It's not useful to try and review your XML (schema definition) in comments - next time please do put the full XML in the question directly (and then format as code so it's readable).

Also, it's more useful to include the exact error you have (in your case I suspect you can't even save the schema due to the duplicate type)

Working through what I can there are two possible issues

1. You have left type="xsd:normalizedString" in the element for txtAlpha - as the page you quote states, this needs to be updated and moved into the restriction element (where you have added it).

2. Furthermore, I've encountered an issue in the past (with 2013 SP1) where the the base="xsd:normalisedString" had to be changed to base="xsd:string" to allow be to save. On reloading the schema returns (and can be resaved) with normalizedString as expected.

This has just worked in my test env.

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="uuid:5b5bea2f-1f88-43b3-8a35-e0d3f248a1d3" xmlns:tcmi="http://www.tridion.com/ContentManager/5.0/Instance" elementFormDefault="qualified" targetNamespace="uuid:5b5bea2f-1f88-43b3-8a35-e0d3f248a1d3">
  <xsd:import namespace="http://www.tridion.com/ContentManager/5.0/Instance" schemaLocation="cm_xml_inst.xsd"></xsd:import>
  <xsd:annotation>
    <xsd:appinfo>
      <tcm:Labels xmlns:tcm="http://www.tridion.com/ContentManager/5.0">
        <tcm:Label ElementName="txtAlpha" Metadata="false">Enter the text (min 4 characters and max 12 characters)</tcm:Label>
      </tcm:Labels>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element name="txtEmailContent">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="txtAlpha" minOccurs="1" maxOccurs="1">
          <xsd:annotation>
            <xsd:appinfo>
              <tcm:ExtensionXml xmlns:tcm="http://www.tridion.com/ContentManager/5.0"></tcm:ExtensionXml>
            </xsd:appinfo>
          </xsd:annotation>
          <xsd:simpleType>
            <xsd:restriction base="xsd:normalizedString">
              <xsd:minLength value="4"></xsd:minLength>
              <xsd:maxLength value="12"></xsd:maxLength>
            </xsd:restriction>
          </xsd:simpleType>
        </xsd:element>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
</xsd:schema>