Forms (1)

A form generated by the Form component will send its contents when you submit it. Here is a simple Form containing some TextFields. It is explained in the next example.
References: .form-horizontal, .col-, Form, TextField, Submit, Forms and Validation, Bean Validation, Page Navigation, Component Events.

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!-- We need a doctype to allow us to use special characters like &nbsp; 
     We use a "strict" DTD to make IE follow the alignment rules. -->
     
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_4.xsd">
<body class="container">
    <h3>Forms (1)</h3>
    
    A form generated by the Form component will send its contents when you submit it. 
    Here is a simple Form containing some TextFields. It is explained in the next example.
    
    <div class="eg">
        <t:form t:id="names" class="form-horizontal">
            <div class="form-group">
                <t:label for="firstName" class="col-sm-2"/>
                <div class="col-sm-4">
                    <t:textfield t:id="firstName"/>
                </div>
            </div>
            <div class="form-group">
                <t:label for="lastName" class="col-sm-2"/>
                <div class="col-sm-4">
                    <t:textfield t:id="lastName"/>
                </div>
            </div>
            <div class="form-group">
                <div class="col-sm-4 col-sm-offset-2">
                    <t:submit/>
                </div>
            </div>
        </t:form>
     </div>
    
    References: 
    <a href="http://getbootstrap.com/css/#forms-horizontal">.form-horizontal</a>, 
    <a href="http://getbootstrap.com/css/#grid">.col-</a>, 
    <a href="http://tapestry.apache.org/5.4/apidocs/org/apache/tapestry5/corelib/components/Form.html">Form</a>, 
    <a href="http://tapestry.apache.org/5.4/apidocs/org/apache/tapestry5/corelib/components/TextField.html">TextField</a>, 
    <a href="http://tapestry.apache.org/5.4/apidocs/org/apache/tapestry5/corelib/components/Submit.html">Submit</a>, 
    <a href="http://tapestry.apache.org/forms-and-validation.html">Forms and Validation</a>, 
    <a href="http://tapestry.apache.org/bean-validation.html">Bean Validation</a>,
    <a href="http://tapestry.apache.org/page-navigation.html">Page Navigation</a>, 
    <a href="http://tapestry.apache.org/component-events.html">Component Events</a>.<br/><br/>

    <t:pagelink t:page="Index">Home</t:pagelink><br/><br/>

    <t:tabgroup>
        <t:sourcecodetab src="/web/src/main/java/jumpstart/web/pages/examples/input/Forms1.tml"/>
        <t:sourcecodetab src="/web/src/main/java/jumpstart/web/pages/examples/input/Forms1.java"/>
        <t:sourcecodetab src="/web/src/main/resources/META-INF/assets/css/examples/plain.css"/>
    </t:tabgroup>
</body>
</html>



package jumpstart.web.pages.examples.input;

import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

import org.apache.tapestry5.annotations.Import;
import org.apache.tapestry5.annotations.InjectComponent;
import org.apache.tapestry5.annotations.InjectPage;
import org.apache.tapestry5.annotations.Property;
import org.apache.tapestry5.corelib.components.Form;
import org.apache.tapestry5.corelib.components.TextField;

@Import(stylesheet = "css/examples/plain.css")
public class Forms1 {

    // Screen fields

    @Property
    @NotNull
    @Size(max = 10)
    private String firstName;

    @Property
    @NotNull
    @Size(max = 10)
    private String lastName;

    // Other pages

    @InjectPage
    private Forms2 page2;

    // Generally useful bits and pieces

    @InjectComponent("names")
    private Form form;

    @InjectComponent("firstName")
    private TextField firstNameField;

    // The code

    void onValidateFromNames() {

        // Note, this method is triggered even if server-side validation has already found error(s).

        if (firstName != null && firstName.equals("Acme")) {
            form.recordError(firstNameField, "First Name must not be Acme.");
        }

    }

    Object onSuccess() {
        page2.set(firstName, lastName);
        return page2;
    }
}



.eg {
                margin: 20px 0;
                padding: 14px;
                border: 1px solid #ddd;
                border-radius: 6px;
                -webkit-border-radius: 6px;
                -mox-border-radius: 6px;
}