我们之前三篇文章实现了模板+题目+选项的增删，现在我们要完成答题管理系统的答题模块啦。
一.UI及功能设计
既然是用户答题，就要有一张表专门用来存放用户答题的答案。我的设想是这样的，我们点击答题按钮的时候，就显示出第一题，判断是否是模板下最后一题，来显示名为next按钮的字体样式为下一题还是完成。并且，对后台传过来的qsn_type进行区分，type=0的单选显示单选框，type=1的多选显示复选框，type=2的问答显示文本域，大概是如下效果。
单选.PNG
多选.PNG
问答.PNG
为此，next按钮要返回的json格式数据如下。
构建json.PNG
用PHP构造一个二维关联数组，其中二维数组中，还有一个二维数组，第一索引表示题目的order_num排序，第二索引表示option_num选项内容以及order_num选项排序号，最后将这个内层二维数组与别的参数使用PHP的array_merge函数进行数组合并，返回给html页面。
二.数据库表设计（psg_qsn_r表）
psg_qsn_r表.PNG
主要的就是choose对应用户选择的选项，1,2,3...对应A,B,C，如果是问答，存的就是一串字符串。
三.代码实现
首先是answer答题按钮的点击监听:
$('#btn-answer').click(function() {
// alert(id_array);
layer.msg('加载中', {
icon: 16,
shade: 0.01,
time: '9999999'
});
var url = "{:url('survey/answer_list')}";
var data = {
model_id: id_array //这里将当前的model_id数组传到后端
}
$.post(url, data, function(data) {
layer.close(layer.index); //关闭正在加载中弹出层
console.log(id_array);
if (data.code == 1) {
// alert(data.data[0].option_num);
if (data.data.bool_num == true) {
$('#next').text("完成");
}
$('#set-answer label[name="qsn_content1"]').css("width", "200px");
$('#set-answer label[name="qsn_content1"]').text(data.data.content);
if (data.data.qsn_type == 1) {
$.each(data.data, function(i, item) {
if (item.order_num == null) return false; //function中无法用break跳出 我们用return
//这边要将type也传过来 然后根据type来往anser_list中添加值
$('#answer_list').append(
// ' <br/><label class="layui-form-label">' + item.order_num + ':</label>' +
'<div class ="layui-input-block"><input type="checkbox" lay-skin="primary" name="checkbox[]" value="' + item.order_num + '" title="' + letter[item.order_num - 1] + ' : ' + item.option_num + '"></div>'
)
});
form.render('checkbox');
} else if (data.data.qsn_type == 0) {
$.each(data.data, function(i, item) {
if (item.order_num == null) return false; //function中无法用break跳出 我们用return
//这边要将type也传过来 然后根据type来往anser_list中添加值
$('#answer_list').append(
// ' <br/><label class="layui-form-label">' + item.order_num + ':</label>' +
'<div class ="layui-input-block"><input type="radio" lay-skin="primary" name="checkbox[]" value="' + item.order_num + '" title="' + letter[item.order_num - 1] + ' : ' + item.option_num + '"></div>'
)
});
form.render('radio');
} else if (data.data.qsn_type == 2) {
// if (item.order_num == null) return false; //function中无法用break跳出 我们用return
//这边要将type也传过来 然后根据type来往anser_list中添加值
$('#answer_list').append(
// ' <br/><label class="layui-form-label">' + item.order_num + ':</label>' +
' <div class ="layui-input-block"><textarea name="text" id="text" required lay-verify="required" placeholder="请输入" class="layui-textarea"></textarea>'
)
form.render();
}
// alert(data.data.order_num);
getqsn_type(data.data.qsn_type);
getmodel_id(data.data.model_id);
getorder_num(data.data.order_num);
layer.open({
type: 1,
skin: 'layui-layer-rim', //加上边框
area: ['660px', '350px'], //宽高
content: $('#set-answer'),
cancel: function(index, layero) {
$('#answer_list').empty();
$('#next').text("下一题");
layer.close(index)
return false;
},
end: function() {
$('#answer_list').empty();
$('#next').text("下一题");
layer.closeAll();
}
});
} else {
layer.msg(data.msg, {
icon: 5
});
}
}, "json");
});
其中有对问题类型进行判别，并且对next样式作更改，然后是其对应的Controller层:
public function answer_list()
{//答题的首次加载
$model_id = input('post.model_id/a'); //tp5提交数组用/a来实现
if (empty($model_id)) {
returnjson([3, '请选择模板答题', '']);
}
$str_device_id = implode(',', $model_id); //数组拆分
$where['model_id'] = array('in', $str_device_id);
$qsn_list = db('qsn')->where($where)->order('order_num')->field('content,qsn_id,order_num,model_id,qsn_type')->select(); //获取问题内容
if (empty($qsn_list)) {
returnjson([2, '暂无题目,无法答题', '']);
}
$bool_num = false;
$max_order_num = db('qsn')->where($where)->max('order_num');
if ($qsn_list[0]['order_num'] == $max_order_num) {
$bool_num = true;
}
// $where1['qsn_id']=$qsn_list[0]['qsn_id'];
// // $qsn_list[0]['qsn_id存在
$option_list = db('qsn_detail')->where('qsn_id', $qsn_list[0]['qsn_id'])->field('option_num,order_num')->select(); //获取选项以及选项排序
//array_merge()合成两个数组
if ($option_list) {
$return_list = array_merge($qsn_list[0], $option_list);
$return_list['bool_num'] = $bool_num;
returnjson([1, 'success', $return_list]);
} else {//那就不是选项了 是问答题
$return_list = $qsn_list[0];
$return_list['bool_num'] = $bool_num;
returnjson([1, '问答题', $return_list]);
}
}
然后是View层next按钮的监听事件，跟这个差不多。
$('#next').click(function() {
var qsn_type = t_qsn_type;
var is_answered = false;
if (qsn_type == 1) {
var count = $("#set-answer input[type='checkbox']:checked").length
if (count == 0) {
is_answered = true;
}
$("#set-answer input[type='checkbox']:checked").each(function() {
choice.push($(this).val());
});
} else if (qsn_type == 0) {
var count = $("#set-answer input[type='radio']:checked").length
if (count == 0) {
is_answered = true;
}
$("#set-answer input[type='radio']:checked").each(function() {
choice.push($(this).val());
});
} else if (qsn_type == 2) {
var count = $("#set-answer #text").length
if (count == 0) {
is_answered = true;
}
$("#set-answer #text").each(function() {
choice.push($(this).val());
});
}
if (is_answered == true) {
layer.msg('请选择答案');
return;
}
alert(choice);
layer.msg('加载中', {
icon: 16,
shade: 0.01,
time: '9999999'
});
alert(choice);
var url = "{:url('survey/next_qsn')}";
var t_choice = choice;
var model_id = t_model_id;
var order_num = t_order_num;
var data = {
model_id: model_id,
order_num: order_num,
choice: t_choice,
qsn_type: qsn_type
}
$.post(url, data, function(data) {
layer.close(layer.index); //关闭正在加载中弹出层
form.render(null, 'answer');
choice = [];
console.log(id_array);
if (data.code == 1) {
if (data.data.bool_num == true) {
$('#next').text("完成");
}
// alert(data.data[0].option_num);
$('#answer_list').empty();
$('#set-answer label[name="qsn_content1"]').text(data.data.content);
// alert(data.data.order_num);
if (data.data.qsn_type == 1) {
$.each(data.data, function(i, item) {
if (item.order_num == null) return false; //function中无法用break跳出 我们用return
$('#answer_list').append(
// ' <br/><label class="layui-form-label">' + item.order_num + ':</label>' +
'<div class ="layui-input-block"><input type="checkbox" lay-skin="primary" name="sex" value="' + item.order_num + '" title="' + letter[item.order_num - 1] + ' : ' + item.option_num + '"></div>'
)
});
form.render('checkbox');
} else if (data.data.qsn_type == 0) {
$.each(data.data, function(i, item) {
if (item.order_num == null) return false; //function中无法用break跳出 我们用return
//这边要将type也传过来 然后根据type来往anser_list中添加值
$('#answer_list').append(
// ' <br/><label class="layui-form-label">' + item.order_num + ':</label>' +
'<div class ="layui-input-block"><input type="radio" lay-skin="primary" name="checkbox[]" value="' + item.order_num + '" title="' + letter[item.order_num - 1] + ' : ' + item.option_num + '"></div>'
)
});
form.render('radio');
} else if (data.data.qsn_type == 2) {
$('#answer_list').append(
// ' <br/><label class="layui-form-label">' + item.order_num + ':</label>' +
' <div class ="layui-input-block"><textarea name="text" id="text" lay-verify="required" placeholder="请输入" class="layui-textarea"></textarea>'
)
form.render();
}
getqsn_type(data.data.qsn_type);
getmodel_id(data.data.model_id);
getorder_num(data.data.order_num);
} else if (data.code == 2) {
layer.msg(data.msg, {
icon: 6
});
setTimeout('layer.closeAll()', 2000);
} else if (data.code == 3) {
layer.msg(data.msg, {
icon: 5
});
}
}, "json");
然后是Controller层代码。
//找出同一套模板下的order_num+1的题目
public function next_qsn()
{
$model_id = input('post.model_id');
$order_num = input('post.order_num');
$choice = input('post.choice/a');
$count_choice = count($choice);
$str_choice1 = implode('', $choice);
if (empty($str_choice1)) {
returnjson([3, '请答题', $choice]);
}
$qsn_type = (int) input('post.qsn_type');
$order_num = (int) $order_num;
$qsn_list = db('qsn')->where('model_id', $model_id)->where('order_num', $order_num)->field('content,qsn_id,order_num,model_id,flight_id,qsn_type')->find(); //获取问题内容
$psg_list['qsn_id'] = $qsn_list['qsn_id'];
$psg_list['model_id'] = $qsn_list['model_id'];
$psg_list['flight_id'] = $qsn_list['flight_id'];
$psg_list['qsn_type'] = $qsn_list['qsn_type'];
//这里要改，这里的detailID不是随机生成的 而是读取出对应题目的detail_id
$option_list = db('qsn_detail')->where('qsn_id', $qsn_list['qsn_id'])->field('detail_id')->select();//这里是二维数组
//这里的detail ID和date就随机生成了
//这里 我们应该count出option_list数组的长度，然后循环赋给psg_list中的detail_id,保证psg_qsn表中的detailID唯一
// returnjson([2, '恭喜您完成了答题', $option_list]);
$str_choice = implode(',', $choice);
for ($x = 0; $x < $count_choice; $x++) {
$psg_list['detail_id'] = $option_list[$x]['detail_id'];
$psg_list['psg_qsn_r_id'] = uniqid('psg_qsn_r_id', true);
$psg_list['choose'] = $choice[$x];
$psg_res = db('psg_qsn_r')->insert($psg_list);
}
//先要将当前问题插入psg_qsn表中 所以我们要先判断 然后看看能否插入psg_qsn表 否则对应的字段就是下一个的字段
$order_num = $order_num + 1;
//只查询一个数据 用find 否则返回的数据就是二维数组
$qsn_list = db('qsn')->where('model_id', $model_id)->where('order_num', $order_num)->field('content,qsn_id,order_num,model_id,flight_id,qsn_type')->find(); //获取问题内容
$bool_num = false;
$max_order_num = db('qsn')->where('model_id', $model_id)->max('order_num');
if ($qsn_list['order_num'] == $max_order_num) {
$bool_num = true;
}
if (empty($qsn_list)) {
returnjson([2, '恭喜您完成了答题', $choice]);
}
//qsn_list已经是一个数组了
$option_list = db('qsn_detail')->where('qsn_id', $qsn_list['qsn_id'])->field('option_num,order_num')->select();
//一个bool_num来判单是否是最后一题
//
if ($option_list) {
$return_list = array_merge($qsn_list, $option_list);
$return_list['bool_num'] = $bool_num;
returnjson([1, 'success', $return_list]);
} else {//是文本域
$return_list = $qsn_list;
$return_list['bool_num'] = $bool_num;
returnjson([1, '问答', $return_list]);
}
}
然后我们看看最终的效果。
四.效果一览
1.gif
OK，完成啦
