我正在 PHP Point of Sale 11.3 中进行一些修改。目前称为使用 Codeigniter 构建的开源销售点。在向库存中添加新项目时，有一个文本字段，我希望自动填充该字段，其值比前一个项目的值增加 1。
视图代码：
<?php
echo form_open('items/save/'.$item_info->item_id,array('id'=>'item_form'));
?>
<fieldset id="item_basic_info">
<legend><?php echo $this->lang->line("items_basic_information"); ?></legend>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_item_number').':', 'name',array('class'=>'wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'item_number',
'id'=>'item_number',
'value'=>$item_info->item_number)
);
?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_name').':', 'name',array('class'=>'required wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'name',
'id'=>'name',
'value'=>$item_info->name)
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_category').':', 'category',array('class'=>'required wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'category',
'id'=>'category',
'value'=>$item_info->category)
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_supplier').':', 'supplier',array('class'=>'required wide')); ?>
<div class='form_field'>
<?php echo form_dropdown('supplier_id', $suppliers, $selected_supplier);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_cost_price').':', 'cost_price',array('class'=>'required wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'cost_price',
'size'=>'8',
'id'=>'cost_price',
'value'=>$item_info->cost_price)
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_unit_price').':', 'unit_price',array('class'=>'required wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'unit_price',
'size'=>'8',
'id'=>'unit_price',
'value'=>$item_info->unit_price)
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_tax_1').':', 'tax_percent_1',array('class'=>'wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'tax_names[]',
'id'=>'tax_name_1',
'size'=>'8',
// 'value'=> isset($item_tax_info[0]['name']) ? $item_tax_info[0]['name'] : $this->config->item('default_tax_1_name'))
'value'=> isset($item_tax_info[0]['name']) ? $item_tax_info[0]['name'] : $this->config->item('default_tax_1_name'))
);
?>
</div>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'tax_percents[]',
'id'=>'tax_percent_name_1',
'size'=>'3',
'value'=> isset($item_tax_info[0]['percent']) ? $item_tax_info[0]['percent'] : $default_tax_1_rate)
);?>
%
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_tax_2').':', 'tax_percent_2',array('class'=>'wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'tax_names[]',
'id'=>'tax_name_2',
'size'=>'8',
'value'=> isset($item_tax_info[1]['name']) ? $item_tax_info[1]['name'] : $this->config->item('default_tax_2_name'))
);?>
</div>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'tax_percents[]',
'id'=>'tax_percent_name_2',
'size'=>'3',
'value'=> isset($item_tax_info[1]['percent']) ? $item_tax_info[1]['percent'] : $default_tax_2_rate)
);?>
%
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_quantity').':', 'quantity',array('class'=>'required wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'quantity',
'id'=>'quantity',
'value'=>$item_info->quantity)
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_reorder_level').':', 'reorder_level',array('class'=>'required wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'reorder_level',
'id'=>'reorder_level',
'value'=>$item_info->reorder_level)
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_location').':', 'location',array('class'=>'wide')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'location',
'id'=>'location',
'value'=>$item_info->location)
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_description').':', 'description',array('class'=>'wide')); ?>
<div class='form_field'>
<?php echo form_textarea(array(
'name'=>'description',
'id'=>'description',
'value'=>$item_info->description,
'rows'=>'5',
'cols'=>'17')
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_allow_alt_desciption').':', 'allow_alt_description',array('class'=>'wide')); ?>
<div class='form_field'>
<?php echo form_checkbox(array(
'name'=>'allow_alt_description',
'id'=>'allow_alt_description',
'value'=>1,
'checked'=>($item_info->allow_alt_description)? 1 :0)
);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('items_is_serialized').':', 'is_serialized',array('class'=>'wide')); ?>
<div class='form_field'>
<?php echo form_checkbox(array(
'name'=>'is_serialized',
'id'=>'is_serialized',
'value'=>1,
'checked'=>($item_info->is_serialized)? 1 : 0)
);?>
</div>
</div>
<?php
echo form_submit(array(
'name'=>'submit',
'id'=>'submit',
'value'=>$this->lang->line('common_submit'),
'class'=>'submit_button float_right')
);
?>
</fieldset>
<?php
echo form_close();
?>
<script type='text/javascript'>
//validation and submit handling
$(document).ready(function()
{
$("#category").autocomplete("<?php echo site_url('items/suggest_category');?>",{max:100,minChars:0,delay:10});
$("#category").result(function(event, data, formatted){});
$("#category").search();
$('#item_form').validate({
submitHandler:function(form)
{
/*
make sure the hidden field #item_number gets set
to the visible scan_item_number value
*/
$('#item_number').val($('#scan_item_number').val());
$(form).ajaxSubmit({
success:function(response)
{
tb_remove();
post_item_form_submit(response);
},
dataType:'json'
});
},
errorLabelContainer: "#error_message_box",
wrapper: "li",
rules:
{
name:"required",
category:"required",
cost_price:
{
required:true,
number:true
},
unit_price:
{
required:true,
number:true
},
tax_percent:
{
required:true,
number:true
},
quantity:
{
required:true,
number:true
},
reorder_level:
{
required:true,
number:true
}
},
messages:
{
name:"<?php echo $this->lang->line('items_name_required'); ?>",
category:"<?php echo $this->lang->line('items_category_required'); ?>",
cost_price:
{
required:"<?php echo $this->lang->line('items_cost_price_required'); ?>",
number:"<?php echo $this->lang->line('items_cost_price_number'); ?>"
},
unit_price:
{
required:"<?php echo $this->lang->line('items_unit_price_required'); ?>",
number:"<?php echo $this->lang->line('items_unit_price_number'); ?>"
},
tax_percent:
{
required:"<?php echo $this->lang->line('items_tax_percent_required'); ?>",
number:"<?php echo $this->lang->line('items_tax_percent_number'); ?>"
},
quantity:
{
required:"<?php echo $this->lang->line('items_quantity_required'); ?>",
number:"<?php echo $this->lang->line('items_quantity_number'); ?>"
},
reorder_level:
{
required:"<?php echo $this->lang->line('items_reorder_level_required'); ?>",
number:"<?php echo $this->lang->line('items_reorder_level_number'); ?>"
}
}
});
});
</script>
控制器：
function view($item_id=-1)
{
$data['item_info']=$this->Item->get_info($item_id);
$data['item_tax_info']=$this->Item_taxes->get_info($item_id);
$suppliers = array('' => $this->lang->line('items_none'));
foreach($this->Supplier->get_all()->result_array() as $row)
{
$suppliers[$row['person_id']] = $row['company_name'] .' ('.$row['first_name'] .' '. $row['last_name'].')';
}
$data['suppliers']=$suppliers;
$data['selected_supplier'] = $this->Item->get_info($item_id)->supplier_id;
$data['default_tax_1_rate']=($item_id==-1) ? $this->Appconfig->get('default_tax_1_rate') : '';
$data['default_tax_2_rate']=($item_id==-1) ? $this->Appconfig->get('default_tax_2_rate') : '';
$this->load->view("items/form",$data);
}
模型：
<?php
class Item extends Model
{
/*
Determines if a given item_id is an item
*/
function exists($item_id)
{
$this->db->from('items');
$this->db->where('item_id',$item_id);
$query = $this->db->get();
return ($query->num_rows()==1);
}
/*
Returns all the items
*/
function get_all($limit=10000, $offset=0)
{
$this->db->from('items');
$this->db->where('deleted',0);
$this->db->order_by("name", "asc");
$this->db->limit($limit);
$this->db->offset($offset);
return $this->db->get();
}
function count_all()
{
$this->db->from('items');
$this->db->where('deleted',0);
return $this->db->count_all_results();
}
function get_all_filtered($low_inventory=0,$is_serialized=0,$no_description)
{
$this->db->from('items');
if ($low_inventory !=0 )
{
$this->db->where('quantity <=','reorder_level');
}
if ($is_serialized !=0 )
{
$this->db->where('is_serialized',1);
}
if ($no_description!=0 )
{
$this->db->where('description','');
}
$this->db->where('deleted',0);
$this->db->order_by("name", "asc");
return $this->db->get();
}
/*
Gets information about a particular item
*/
function get_info($item_id)
{
$this->db->from('items');
$this->db->where('item_id',$item_id);
$query = $this->db->get();
if($query->num_rows()==1)
{
return $query->row();
}
else
{
//Get empty base parent object, as $item_id is NOT an item
$item_obj=new stdClass();
//Get all the fields from items table
$fields = $this->db->list_fields('items');
foreach ($fields as $field)
{
$item_obj->$field='';
}
return $item_obj;
}
}
/*
Get an item id given an item number
*/
function get_item_id($item_number)
{
$this->db->from('items');
$this->db->where('item_number',$item_number);
$query = $this->db->get();
if($query->num_rows()==1)
{
return $query->row()->item_id;
}
return false;
}
/*
Gets information about multiple items
*/
function get_multiple_info($item_ids)
{
$this->db->from('items');
$this->db->where_in('item_id',$item_ids);
$this->db->order_by("item", "asc");
return $this->db->get();
}
/*
Inserts or updates a item
*/
function save(&$item_data,$item_id=false)
{
if (!$item_id or !$this->exists($item_id))
{
if($this->db->insert('items',$item_data))
{
$item_data['item_id']=$this->db->insert_id();
return true;
}
return false;
}
$this->db->where('item_id', $item_id);
return $this->db->update('items',$item_data);
}
/*
Updates multiple items at once
*/
function update_multiple($item_data,$item_ids)
{
$this->db->where_in('item_id',$item_ids);
return $this->db->update('items',$item_data);
}
/*
Deletes one item
*/
function delete($item_id)
{
$this->db->where('item_id', $item_id);
return $this->db->update('items', array('deleted' => 1));
}
/*
Deletes a list of items
*/
function delete_list($item_ids)
{
$this->db->where_in('item_id',$item_ids);
return $this->db->update('items', array('deleted' => 1));
}
/*
Get search suggestions to find items
*/
function get_search_suggestions($search,$limit=25)
{
$suggestions = array();
$this->db->from('items');
$this->db->like('name', $search);
$this->db->where('deleted',0);
$this->db->order_by("name", "asc");
$by_name = $this->db->get();
foreach($by_name->result() as $row)
{
$suggestions[]=$row->name;
}
$this->db->select('category');
$this->db->from('items');
$this->db->where('deleted',0);
$this->db->distinct();
$this->db->like('category', $search);
$this->db->order_by("category", "asc");
$by_category = $this->db->get();
foreach($by_category->result() as $row)
{
$suggestions[]=$row->category;
}
$this->db->from('items');
$this->db->like('item_number', $search);
$this->db->where('deleted',0);
$this->db->order_by("item_number", "asc");
$by_item_number = $this->db->get();
foreach($by_item_number->result() as $row)
{
$suggestions[]=$row->item_number;
}
//only return $limit suggestions
if(count($suggestions > $limit))
{
$suggestions = array_slice($suggestions, 0,$limit);
}
return $suggestions;
}
function get_item_search_suggestions($search,$limit=25)
{
$suggestions = array();
$this->db->from('items');
$this->db->where('deleted',0);
$this->db->like('name', $search);
$this->db->order_by("name", "asc");
$by_name = $this->db->get();
foreach($by_name->result() as $row)
{
$suggestions[]=$row->item_id.'|'.$row->name;
}
$this->db->from('items');
$this->db->where('deleted',0);
$this->db->like('item_number', $search);
$this->db->order_by("item_number", "asc");
$by_item_number = $this->db->get();
foreach($by_item_number->result() as $row)
{
$suggestions[]=$row->item_id.'|'.$row->item_number;
}
//only return $limit suggestions
if(count($suggestions > $limit))
{
$suggestions = array_slice($suggestions, 0,$limit);
}
return $suggestions;
}
function get_category_suggestions($search)
{
$suggestions = array();
$this->db->distinct();
$this->db->select('category');
$this->db->from('items');
$this->db->like('category', $search);
$this->db->where('deleted', 0);
$this->db->order_by("category", "asc");
$by_category = $this->db->get();
foreach($by_category->result() as $row)
{
$suggestions[]=$row->category;
}
return $suggestions;
}
/*
Preform a search on items
*/
function search($search)
{
$this->db->from('items');
$this->db->where("(name LIKE '%".$this->db->escape_like_str($search)."%' or
item_number LIKE '%".$this->db->escape_like_str($search)."%' or
category LIKE '%".$this->db->escape_like_str($search)."%') and deleted=0");
$this->db->order_by("name", "asc");
return $this->db->get();
}
function get_categories()
{
$this->db->select('category');
$this->db->from('items');
$this->db->where('deleted',0);
$this->db->distinct();
$this->db->order_by("category", "asc");
return $this->db->get();
}
}
?>
视图中的 item_number 字段需要自动填充加一。假设编号系列从 10001 开始。添加新项目时，该字段应预填 10002。
想法？