XSL 检查参数长度并做出选择

发布于 2024-08-30 00:40:40 字数 5930 浏览 16 评论 0原文

我需要检查参数中是否有值，如果有则执行此行，否则执行此行。

我已经让它工作了，虽然我没有收到错误，但它没有采用正确的分支

错误的分支位于volunteer_role模板

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:key name="volunteers-by-region" match="volunteer" use="region" />
  <xsl:template name="hoo" match="/">
    <html>
      <head>
        <title>Registered Volunteers</title>
        <link rel="stylesheet" type="text/css" href="volunteer.css" />
      </head>
      <body>
        <h1>Registered Volunteers</h1>
        <h3>Ordered by the username ascending</h3>
        <xsl:for-each select="folktask/member[user/account/userlevel='2']">
          <xsl:for-each select="volunteer[count(. | key('volunteers-by-region', region)[1]) = 1]">
            <xsl:sort select="region" />
            <xsl:for-each select="key('volunteers-by-region', region)">
              <xsl:sort select="folktask/member/user/personal/name" />
                <div class="userdiv">
                  <xsl:call-template name="volunteer_volid">
                    <xsl:with-param name="volid" select="../volunteer/@id" />
                  </xsl:call-template>
                  <xsl:call-template name="volunteer_role">
                    <xsl:with-param name="volrole" select="../volunteer/roles" />
                  </xsl:call-template>
                  <xsl:call-template name="volunteer_region">
                    <xsl:with-param name="volloc" select="../volunteer/region" />
                  </xsl:call-template>
                </div>
              </xsl:for-each>
            </xsl:for-each>
          </xsl:for-each>
          <xsl:if test="position()=last()">
            <div class="count">
              <h2>Total number of volunteers: <xsl:value-of select="count(/folktask/member/user/account/userlevel[text()=2])" />
              </h2>
            </div>
          </xsl:if>
        </body>
      </html>
    </xsl:template>

    <xsl:template name="volunteer_volid">
      <xsl:param name="volid" select="'Not Available'" />
      <div class="heading2 bold"><h2>VOLUNTEER ID: <xsl:value-of select="$volid" /></h2></div>
    </xsl:template>

    <xsl:template name="volunteer_role">
      <xsl:param name="volrole" select="'Not Available'" />
      <div class="small bold">ROLES:</div>
      <div class="large">
      <xsl:choose>
        <xsl:when test="string-length($volrole)!=0">
          <xsl:value-of select="$volrole" />
        </xsl:when>
        <xsl:otherwise>
          <xsl:text> </xsl:text>
        </xsl:otherwise>
      </xsl:choose>
    </div>
  </xsl:template>

  <xsl:template name="volunteer_region">
    <xsl:param name="volloc" select="'Not Available'" />
    <div class="small bold">REGION:</div>
    <div class="large"><xsl:value-of select="$volloc" /></div>
  </xsl:template>
</xsl:stylesheet>

和XML中：

<?xml version="1.0" encoding="ISO-8859-1" ?>
<?xml-stylesheet type="text/xsl" href="volunteers.xsl"?>
<folktask xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" xs:noNamespaceSchemaLocation="folktask.xsd">
  <member>
    <user id="1">
      <personal>
        <name>Abbie Hunt</name>
        <sex>Female</sex>
        <address1>108 Access Road</address1>
        <address2></address2>
        <city>Wells</city>
        <county>Somerset</county>
        <postcode>BA5 8GH</postcode>
        <telephone>01528927616</telephone>
        <mobile>07085252492</mobile>
        <email>[email protected]</email>
      </personal>
      <account>
        <username>AdRock</username>
        <password>269eb625e2f0cf6fae9a29434c12a89f</password>
        <userlevel>4</userlevel>
        <signupdate>2010-03-26T09:23:50</signupdate>
      </account>
    </user>
    <volunteer id="1">
      <roles></roles>
      <region>South West</region>
    </volunteer>
  </member>
  <member>
    <user id="2">
      <personal>
        <name>Aidan Harris</name>
        <sex>Male</sex>
        <address1>103 Aiken Street</address1>
        <address2></address2>
        <city>Chichester</city>
        <county>Sussex</county>
        <postcode>PO19 4DS</postcode>
        <telephone>01905149894</telephone>
        <mobile>07784467941</mobile>
        <email>[email protected]</email>
      </personal>
      <account>
        <username>AmbientExpert</username>
        <password>8e64214160e9dd14ae2a6d9f700004a6</password>
        <userlevel>2</userlevel>
        <signupdate>2010-03-26T09:23:50</signupdate>
      </account>
    </user>
    <volunteer id="2">
      <roles>Van Driver,gas Fitter</roles>
      <region>South Central</region>
    </volunteer>
  </member>
</folktask>

原文

I need to check if a param has got a value in it and if it has then do this line otherwise do this line.

I've got it working whereas I don't get errors but it's not taking the right branch

The branch that is wrong is in the volunteer_role template

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:key name="volunteers-by-region" match="volunteer" use="region" />
  <xsl:template name="hoo" match="/">
    <html>
      <head>
        <title>Registered Volunteers</title>
        <link rel="stylesheet" type="text/css" href="volunteer.css" />
      </head>
      <body>
        <h1>Registered Volunteers</h1>
        <h3>Ordered by the username ascending</h3>
        <xsl:for-each select="folktask/member[user/account/userlevel='2']">
          <xsl:for-each select="volunteer[count(. | key('volunteers-by-region', region)[1]) = 1]">
            <xsl:sort select="region" />
            <xsl:for-each select="key('volunteers-by-region', region)">
              <xsl:sort select="folktask/member/user/personal/name" />
                <div class="userdiv">
                  <xsl:call-template name="volunteer_volid">
                    <xsl:with-param name="volid" select="../volunteer/@id" />
                  </xsl:call-template>
                  <xsl:call-template name="volunteer_role">
                    <xsl:with-param name="volrole" select="../volunteer/roles" />
                  </xsl:call-template>
                  <xsl:call-template name="volunteer_region">
                    <xsl:with-param name="volloc" select="../volunteer/region" />
                  </xsl:call-template>
                </div>
              </xsl:for-each>
            </xsl:for-each>
          </xsl:for-each>
          <xsl:if test="position()=last()">
            <div class="count">
              <h2>Total number of volunteers: <xsl:value-of select="count(/folktask/member/user/account/userlevel[text()=2])" />
              </h2>
            </div>
          </xsl:if>
        </body>
      </html>
    </xsl:template>

    <xsl:template name="volunteer_volid">
      <xsl:param name="volid" select="'Not Available'" />
      <div class="heading2 bold"><h2>VOLUNTEER ID: <xsl:value-of select="$volid" /></h2></div>
    </xsl:template>

    <xsl:template name="volunteer_role">
      <xsl:param name="volrole" select="'Not Available'" />
      <div class="small bold">ROLES:</div>
      <div class="large">
      <xsl:choose>
        <xsl:when test="string-length($volrole)!=0">
          <xsl:value-of select="$volrole" />
        </xsl:when>
        <xsl:otherwise>
          <xsl:text> </xsl:text>
        </xsl:otherwise>
      </xsl:choose>
    </div>
  </xsl:template>

  <xsl:template name="volunteer_region">
    <xsl:param name="volloc" select="'Not Available'" />
    <div class="small bold">REGION:</div>
    <div class="large"><xsl:value-of select="$volloc" /></div>
  </xsl:template>
</xsl:stylesheet>

And the XML:

<?xml version="1.0" encoding="ISO-8859-1" ?>
<?xml-stylesheet type="text/xsl" href="volunteers.xsl"?>
<folktask xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" xs:noNamespaceSchemaLocation="folktask.xsd">
  <member>
    <user id="1">
      <personal>
        <name>Abbie Hunt</name>
        <sex>Female</sex>
        <address1>108 Access Road</address1>
        <address2></address2>
        <city>Wells</city>
        <county>Somerset</county>
        <postcode>BA5 8GH</postcode>
        <telephone>01528927616</telephone>
        <mobile>07085252492</mobile>
        <email>[email protected]</email>
      </personal>
      <account>
        <username>AdRock</username>
        <password>269eb625e2f0cf6fae9a29434c12a89f</password>
        <userlevel>4</userlevel>
        <signupdate>2010-03-26T09:23:50</signupdate>
      </account>
    </user>
    <volunteer id="1">
      <roles></roles>
      <region>South West</region>
    </volunteer>
  </member>
  <member>
    <user id="2">
      <personal>
        <name>Aidan Harris</name>
        <sex>Male</sex>
        <address1>103 Aiken Street</address1>
        <address2></address2>
        <city>Chichester</city>
        <county>Sussex</county>
        <postcode>PO19 4DS</postcode>
        <telephone>01905149894</telephone>
        <mobile>07784467941</mobile>
        <email>[email protected]</email>
      </personal>
      <account>
        <username>AmbientExpert</username>
        <password>8e64214160e9dd14ae2a6d9f700004a6</password>
        <userlevel>2</userlevel>
        <signupdate>2010-03-26T09:23:50</signupdate>
      </account>
    </user>
    <volunteer id="2">
      <roles>Van Driver,gas Fitter</roles>
      <region>South Central</region>
    </volunteer>
  </member>
</folktask>

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风向决定发型 2024-09-06 00:40:40

以下应该可以解决问题：

<xsl:template name="volunteer_volid">
  <xsl:param name="volid" />
  <xsl:choose>
    <xsl:when test="string-length($volid) > 0">
      <div class="heading2 bold"><h2>VOLUNTEER ID: <xsl:value-of select="$volid" /></h2></div>  
    </xsl:when>
    <xsl:otherwise>
      <!-- No volid -->
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

我已将默认值替换为空字符串，以便不提供参数值与提供参数值“”相同。如果这不是所需的行为，则更改参数 select 并相应地修改 test 表达式，例如：

$volid != 'Not Available'

The following should do the trick:

<xsl:template name="volunteer_volid">
  <xsl:param name="volid" />
  <xsl:choose>
    <xsl:when test="string-length($volid) > 0">
      <div class="heading2 bold"><h2>VOLUNTEER ID: <xsl:value-of select="$volid" /></h2></div>  
    </xsl:when>
    <xsl:otherwise>
      <!-- No volid -->
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

I've replaced the default value with an empty string so that not providing a parameter value is the same as providing the parameter value as "". If this isn't the desired behaviour then change the parameters select and modify the test expression accordingly, for example: