shopnc secondary development (2), shopnc secondary development_PHP tutorial

shopnc secondary development (2), shopnc secondary development

Generally speaking, secondary development mainly involves modifying the interface and adding functions

Let’s talk about modifying the interface first

MVC architecture program, in the interface, basically calls data.

There are three common interface data structures

1. It is a business-side or control-side data-driven interface. Basically, whatever data is output from the background is what data is displayed on the interface. The troublesome thing about this is that if you want to replace the template, the knife will move a lot, unless there is no need to replace the template. If the data on the control end is not modified, the interface design will be more restricted.

2. It is interface-driven data, and the interface customizes the call data. Most cms basically do it this way. Data is obtained through tags or by defining a general PHP call data function. This is more friendly to the interface design, but it will be more troublesome to cut the picture and cover the code.

3. The third method is a bit more difficult, which is to define the front-end calling module through the WYSIWYG model in the background, and define the data through system configuration or manual configuration, and then generate html data, which can be read by the front-end in one go , just set a reasonable cache interval. Like Taobao and Shopex, this is the model that puts greater pressure on backend development.

shopnc’s program belongs to the first type, with a background data-driven interface. Therefore, if you want to change the interface, you usually need to change the controller and the view. It is best to record the modified files. Otherwise, it will be very troublesome if the source files are replaced in future upgrades.

The URL of shopnc is usually like this

http://localhost/shopnc/shop/index.php?act=show_groupbuy&op=index

The act parameter represents the controller, and op represents the name of the business function in the controller

Looking back at the directory structure of shopnc, we go to the controller directory to find show_groupbuy.php. This is the business logic of the controller

Just take a look at the code

<span>class</span> show_groupbuyControl <span>extends</span><span> BaseHomeControl {

    </span>...<span>

}    </span>

The name of the controller followed by a Control string and inherited from BaseHomeControl

And op is the function in the show_groupbuyControl class

<span>/*</span><span>*
 * 默认跳转到进行中的团购列表
 </span><span>*/</span>
<span>public</span> <span>function</span><span> indexOp() {
    </span><span>$this</span>-><span>groupbuy_listOp();
}</span>

The name is composed of the op parameter in the url plus the Op string

If you want to change the data displayed in the foreground, you need to find the corresponding controller and function and modify the code

The templates at the front desk are also regular

The functions of the folders under the templates/default directory have the following meanings:

buy Buy function templates, such as shopping cart, order and other templates

css style folder

home The templates for the front-end display function modules are all here

images Template picture folder

layout Layout folder, if you want to find the header files of each functional area, they are here

member Member Center Template

seller Seller Center Template

sns sns function template

store Seller store template

Go to the corresponding folder to find the relevant file template to modify the view logic

It may be a bit confusing to find the corresponding view at first, because the view and the controller do not correspond, but it is easier to find based on the op parameter. Of course, it is recommended to find it from the controller code

Find the corresponding op function

At the end of the function, find words similar to Tpl::showpage('index');. Such words mean that the view of index is called from the corresponding folder, so we find index.php which is the corresponding view. Filed

If there is no word Tpl::showpage('index');, it is usually because other functions are called or the view file is not output, such as directly outputting a string or outputting json.

After you find the view file, you need to find the corresponding data display module before you can modify it.

Let’s first go back and find the corresponding controller and look at the code. We find the homepage file, taking group purchasing as an example

<span>//</span><span>团购专区</span>
Language::read('member_groupbuy'<span>);
</span><span>$model_groupbuy</span> = Model('groupbuy'<span>);
</span><span>$group_list</span> = <span>$model_groupbuy</span>->getGroupbuyCommendedList(<span>array</span>(), <span>null</span>, '', '*', 4<span>);
Tpl</span>::output('group_list', <span>$group_list</span>);

Except for the first sentence of the comment, you can guess it without looking at it. It calls the language file

The second sentence is to call model. The location of model is in data in the upper directory, and the file name of the model file is Model('groupbuy'); groupbuy plus .php suffix

The third sentence calls the function in the model to obtain the desired data

The fourth sentence is to assign the obtained data to the variable group_list in the template

We open the view file and find group_list to locate the location we are looking for in the template. The templates are all pure PHP syntax and can be modified directly. Remember to back up!