source: trunk/grails-app/views/study/show_subjects.gsp @ 1213

  <g:if test="${studyList*.subjects?.flatten()?.size()==0}">
        No subjects in the selected studies
  </g:if>
  <g:else>
        <table>
          <thead>
                <tr>
                  <g:if test="${multipleStudies}">
                        <th></th>
                  </g:if>
                  <g:each in="${new dbnp.studycapturing.Subject().giveDomainFields()}" var="field">
                        <th>${field}</th>
                  </g:each>

                  <%
                        // Determine a union of the fields for all different
                        // subjects in all studies. In order to show a proper list.
                        // We want every field to appear just once,
                        // so the list is filtered for unique values
                        subjectTemplates = studyList*.giveSubjectTemplates()?.flatten().unique()
                        if( !subjectTemplates ) {
                          subjectTemplates = [];
                          subjectFields = [];
                        } else {
                          subjectFields = subjectTemplates*.fields?.flatten().unique()
                          if( !subjectFields ) {
                                subjectFields = [];
                          }
                        }

                        /*
                         * These lines are rewritten because
                         * performance sucked
                         *
                         *   // These took about 9 seconds (for 31 subjects and
                         *   allSubjects = studyList*.subjects?.flatten()
                         *
                         *   subjectFields = subjectFields.findAll { subjectField ->
                         *     ( true in allSubjects.collect { subject -> subject.fieldExists( subjectField.name ) && subject.getFieldValue( subjectField.name ) != null }.flatten() )
                         *   }
                         */

                        // Filter out all fields that are left blank for all subjects
                        allSubjects = studyList*.subjects?.flatten()

                        showSubjectFields = []
                        subjectFields.each { subjectField ->
                          for( subject in allSubjects )
                          {
                                // If the field is filled for this subject, we have to
                                // show the field and should not check any other
                                // subjects (hence the break)
                                if( subject.fieldExists( subjectField.name ) && subject.getFieldValue( subjectField.name ) ) {
                                  showSubjectFields << subjectField;
                                  break;
                                }
                          }
                        }
                  %>

                  <g:each in="${showSubjectFields}" var="field">
                        <th>${field}</th>
                  </g:each>

                </tr>
          </thead>

          <g:set var="i" value="${1}" />

          <g:each in="${studyList}" var="studyInstance">
                <g:each in="${studyInstance.subjects}" var="subject" status="j">
                  <tr class="${(i % 2) == 0 ? 'odd' : 'even'}">
                        <g:if test="${multipleStudies && j==0}">
                          <td class="studytitle" rowspan="${studyInstance.subjects?.size()}">
                                ${studyInstance.title}
                          </td>
                        </g:if>
                        <g:each in="${subject.giveDomainFields()}" var="field">
                          <td><wizard:showTemplateField field="${field}" entity="${subject}" /></td>
                        </g:each>

                        <g:each in="${showSubjectFields}" var="field">
                          <td>
                                <g:if test="${subject.fieldExists(field.name)}">
                                        <wizard:showTemplateField field="${field}" entity="${subject}" />
                                </g:if>
                                <g:else>
                                  N/A
                                </g:else>
                          </td>
                        </g:each>

                  </tr>
                  <g:set var="i" value="${i + 1}" />
                </g:each>
          </g:each>
        </table>
  </g:else>