Niushop开源商城数据操作

niushop使用了thinkphp的数据库操作原理，用户可以使用thinkphp的数据库操作，但是niushop针对数据库操作整体进行了封装，数据查询更加方便，所以建议用户使用niushop专门封装的数据库操作便于整体管理。

1. 数据查询

查询单条数据 getInfo($condition, $field):$condition:表示传入条件，$field:表示查询字段

model('help')->getInfo([ ['id', '=', $help_id], ['site_id', '=', $site_id] ], 'id, title, content, class_id, class_name, sort, link_address, create_time, modify_time');

查询列表getList($condition = [], $field = true, $order = ”, $alias = ‘a’, $join = [], $group = ”, $limit = null)

model('help')->getList($condition, $field, $order, '', '', '', $limit);

查询分页列表pageList($condition = [], $field = true, $order = ”, $page = 1, $list_rows = PAGE_LIST_ROWS, $alias = ‘a’, $join = [], $group = null, $limit = null)

model('help')->pageList($condition, $field, $order, $page, $page_size);

查询视图，按照thinkphp视图查询方法：

    public function getApplyDetail($condition)
    {

        $field = 'nsa.apply_id, nsa.site_id,nsa.website_id, nsa.member_id, nsa.username, nsa.cert_id, nsa.shop_name, nsa.apply_state, 
                   nsa.apply_message, nsa.apply_year, nsa.category_name, nsa.category_id, nsa.group_name, nsa.group_id, 
                   nsa.paying_money_certificate, nsa.paying_money_certificate_explain, nsa.paying_deposit, nsa.paying_apply, 
                   nsa.paying_amount, nsa.create_time, nsa.audit_time, nsa.finish_time, 
                   nsc.cert_id, nsc.cert_type, nsc.company_name, nsc.company_province_id, nsc.company_city_id, nsc.company_district_id, 
                   nsc.company_address, nsc.contacts_name, nsc.contacts_mobile, nsc.contacts_card_no, nsc.contacts_card_electronic_1, 
                   nsc.contacts_card_electronic_2, nsc.contacts_card_electronic_3, nsc.business_licence_number, 
                   nsc.business_licence_number_electronic, nsc.business_sphere, nsc.taxpayer_id, nsc.general_taxpayer, 
                   nsc.tax_registration_certificate, nsc.tax_registration_certificate_electronic, nsc.bank_account_name, 
                   nsc.bank_account_number, nsc.bank_name, nsc.bank_address, nsc.bank_code, nsc.bank_type, nsc.settlement_bank_account_name, 
                   nsc.settlement_bank_account_number, nsc.settlement_bank_name, nsc.settlement_bank_address,nsc.company_full_address,
                   w.site_area_name';
        $alias = 'nsa';
        $join = [
            [
                'shop_cert nsc',
                'nsa.cert_id = nsc.cert_id',
                'left'
            ],
            [
                'website w',
                'w.site_id = nsa.website_id',
                'left'
            ],

        ];
        $info = model('shop_apply')->getInfo($condition, $field, $alias, $join);
        return $this->success($info);
    }

查询第一条数据getFirstData($condition, $order)

获取查询数据的数量getCount($condition)

获取查询字段和getSum($condition, $field)

获取查询字段最大值getMax($condition, $field)

获取查询字段最小值getMin($condition, $field)

2. 数据添加

niushop数据添加使用add方法，例如：

    /**
     * 添加帮助文章
     * @param array $data
     */
    public function addHelp($data)
    {
        $help_id = model('help')->add($data);
        Cache::tag("help")->clear();
        return $this->success($help_id);
    }

3. 数据修改，使用update方法，传入修改条件

    /**
     * 修改帮助文章
     * @param array $data
     */
    public function editHelp($data, $condition)
    {
        $res = model('help')->update($data, $condition);
        Cache::tag("help")->clear();
        return $this->success($res);
    }

4. 数据删除，使用delete方法

	/**
	 * 删除文章
	 * @param unknown $coupon_type_id
	 */
	public function deleteHelp($condition)
	{
	    $res = model('help')->delete($condition);
	    Cache::tag("help")->clear();
	    return $this->success($res);
	}