很抱歉，如果之前已经提出这个问题，但我一直在寻找，我找不到我要找的东西。
这是我的数据库结构
| ID | collection_ID | valuation | postby_ID | post_datetime |
这是我的查看页面（输入数据）
<form action="insert.php" method="post">
<?php $i = 0; ?>
<?php foreach ($significance as $data): ?>
<input type="text" name="var[<?php echo $i; ?>][]" value="<?php echo $data->category; ?>" >
<select name="var[<?php echo $i; ?>][]">
<option value="0"> 0 </option>
<option value="1"> 1 </option>
<option value="2"> 2 </option>
<option value="3"> 3 </option>
</select>
<input type="text" name="var[<?php echo $i; ?>][]">
<?php $i++; ?>
<?php endforeach; ?>
<button type="submit"> Submit </button>
</form>
到目前为止，这是我的控制器：
$collectionID = $this->input->get('coll_id'); //get from url
$this->form_validation->set_rules('val[]', 'Some text', 'required', array('required'=>'%s required'));
if ($this->form_validation->run == FALSE)
{
$data = array(
'page_title' => 'Some Title',
'part' => 'input-data',
'detail' => $this->collection_db->get_collection_data($collectionID),
'significance' => $this->significance_db->get_significance_list()
);
$this->load->view('form-registration', $data);
}
else
{
$db_data = array(
'collection_ID' => $collectionID,
'valuation' => json_encode($this->input->post('val)),
'post_by' => $this->session->userdata('user_ID'),
'post_datetime => get_datetime_format() //some helper function
);
if ($this->significance_db->save_data($db_data) == TRUE)
{
'some function here if TRUE';
}
else
{
'some function here if FALSE;
}
}
到目前为止，这是我的模型：
function save_data($db_data)
{
$this->db->insert('table_name', $db_data);
if ($this->db->affected_rows > 0)
{
return TRUE;
}
else
{
return FALSE;
}
}
这是我在评估列数据库中的价值，因为foreach循环生成了6个表单字段：
[["variable 1", "1", "description 1"],["variable 2", "0", "description 2"],["variable 3", "3", "description 3"],["variable 4", "3", "description 4"],["variable 5", "2", "description 5"],["variable 6", "0", "description 6"]]
那么，这是结果的一个很好的例子，或者我做错了编码？因为在另一个视图页面中我想在foreach循环中使用json_decode提取结果，如下所示：
Variable : variable 1
Score: 1
Description: description 1
Variable : variable 2
Score: 0
Description: description 2
Variable : variable 3
Score: 3
Description: description 3
Variable : variable 4
Score: 3
Description: description 4
Variable : variable 5
Score: 2
Description: description 5
Variable : variable 6
Score: 0
Description: description 6
另一个问题是：我如何从视图和控制器生成json_encode结果如上所示：
[
["variable" => "variable 1", "score" => "1", "description" => "description 1"],
["variable" => "variable 2", "score" => "0", "description" => "description 2"],
[etc...]
]
答案 0 :(得分：1)
经过这么多试验和错误并搜索了许多资源。最后我来找我自己的解决方案。希望我能用我的代码帮助别人。请随意为此问题添加其他解决方案......
查看输入数据的页面（form-input.php）
<?php echo form_open('#', array('class'=>'form') ); ?>
<?php
$i = 0;
if ($valuation != NULL):
?>
// Form field will looping through this as many as foreach result
<?php foreach ($valuation as $value): ?>
<input type="text" name="variable[<?php echo $x; >?]" value="<?php echo $value->category; ?>" readonly="readonly">
<select name="score[<?php echo $x; ?>]">
<option value=""> — Choose Score — </option>
<option value="0"> 0 </option>
<option value="1"> 1 </option>
<option value="2"> 2 </option>
<option value="3"> 3 </option>
</select>
<textarea name="desc[<?php echo $x; ?>]" rows="5" required="required"></textarea>
<?php
$x++;
endforeach;
?>
<?php
else:
echo 'No input field generate';
endif;
?>
<?php
echo form_button(array('name'=>'submit', 'type'=>'submit', 'content'=>'Save') );
echo form_close();
?>
控制器（Collection.php）
public function save()
{
// get collection ID from URL
$collectionID = $this->input->get('coll_id');
//Form Validation
$this->form_validation->set_rules('variable[]', 'Variable', 'required', array('required'=>'%s cannot empty'));
$this->form_validation->set_rules('score[]', 'Score', 'required', array('required'=>'%s cannot empty'));
$this->form_validation->set_rules('desc[]', 'Description', 'required', array('required'=>'%s cannot empty'));
if ($this->form_validation->run() == FALSE)
{
$data = array(
'page_title' => 'Add Significance Data for ' . $collectionID,
'valuation' => $this->significance_db->get_value_list()
);
$this->load->view('form-input', $data);
}
else
{
$count = count($this->input->post('variable'));
for ($i=0; $i<$count; $i++)
{
$json_data[] = array(
'variable' => $this->input->post('variable')[$i],
'score' => $this->input->post('score')[$i],
'description' => $this->input->post('desc')[$i]
);
}
$json_encode_data = json_encode($json_data);
$db_data = array(
'collection_ID' => $collectionID,
'valuation' => $json_encode_data,
'post_by' => $this->session->userdata('user_ID'),
'post_datetime' => get_datetime_format()
);
if ($this->significance_db->save_data($db_data) == TRUE)
{
'some function here if TRUE';
}
else
{
'some function here if FALSE';
}
}
}
型号（significant_db.php）
function save_data($db_data)
{
$this->db->insert('table_name', $db_data);
if ($this->db->affected_rows() > 0)
{
return TRUE;
}
else
{
return FALSE;
}
}
这就是如何将数据插入我的数据库表。它将使用评估列中的数组内容（使用json_encode生成）创建一行。
下面的另一个代码是如何查看此数据。我将展示我的Controller，Model和View的示例。
控制器（也在Collection.php内）
public function show()
{
//get collection ID from URL
$collectionID = $this->input->get('coll_id');
$data = array(
'page_title' => 'Show Significance Data from ' . $collectionID,
'significance' => $this->significance_db->get_significance_data($collectionID)
);
$this->load->view('view-page', $data);
}
查看Diplaying数据页面（view-page.php）
<?php if ($significance != NULL: ?>
<div class="row">
<div class="col-sm-12">
<div class="card">
<div class="card-body">
<?php foreach ($significance as $value): ?>
<?php
$data = json_decode($value->valuation);
$count = count($data);
?>
<?php for ($i=0; $i<$count; $i++): ?>
<ul class="list-inline">
<li class="list-inline-item"><?php echo $data[$i]->variable; ?></li>
<li class="list-inline-item"><?php echo $data[$i]->score; ?></li>
<li class="list-inline-item"><?php echo $data[$i]->description; ?></li>
</ul>
<?php endfor; ?>
<?php endforeach; ?>
</div>
</div>
</div>
</div>
<?php else: ?>
<strong> No Data Result. </strong>
<?php endif; ?>
如果您想知道来自 json_decode（$ value-＆gt;估价）的数据，您可以查看 print_r（$ data）或您喜欢的任何脚本显示数组。
最后。希望这可以帮助别人。如果有人有另一种创建相同功能/方法的方法，请随意评论或添加其他方法。