uk.co.eggsylife.controller.StudentController.java Source code

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Here is the source code for uk.co.eggsylife.controller.StudentController.java

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// Copyright 2010 eggsylife.co.uk
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package uk.co.eggsylife.controller;

import java.util.ArrayList;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import uk.co.eggsylife.persistent.Student;
import uk.co.eggsylife.validation.StudentValidator;

/**
 * @author eggsy@eggsylife.co.uk
 */
@Controller
public class StudentController {

    private static final String STUDENTS_VIEW_KEY = "students.view";
    private static final String STUDENT_EDIT_DIALOG_VIEW_KEY = "studentsListAndEditDialog.view";

    @Autowired
    protected ArrayList<Student> students = null;

    @Autowired
    protected StudentValidator studentValidator = null;

    @RequestMapping(value = "/students", method = RequestMethod.GET)
    public String showStudentsList(ModelMap modelMap) {
        modelMap.put("students", students);
        return STUDENTS_VIEW_KEY;
    }

    @RequestMapping(value = "/students/edit", method = RequestMethod.GET)
    public String showStudentEditForm(ModelMap modelMap) {

        // Object class will be used as our
        // form backing object
        Student student = new Student();
        modelMap.addAttribute("student", student);

        return STUDENT_EDIT_DIALOG_VIEW_KEY;
    }

    @RequestMapping(value = "/students/edit", method = RequestMethod.POST)
    public String saveStudentEdit(@ModelAttribute Student student, BindingResult errors, ModelMap modelMap) {

        studentValidator.validate(student, errors);

        if (errors.hasErrors()) {
            return STUDENT_EDIT_DIALOG_VIEW_KEY;
        } else {
            students.add(student);

            modelMap.put("students", students);

            return STUDENTS_VIEW_KEY;
        }

    }
}