Weiphp WeChat Development Tutorial Message Board Plug-in Development Detailed Explanation Based on Weiphp Framework
1. Functional Analysis
A traditional message board should have the functions of posting messages, viewing messages, replying to messages, managing messages, etc. This tutorial develops the most basic message board, which only includes the two functions of posting messages and viewing messages. , the front page style made with bootstrap according to the function is as follows:
##2, Create a new weiphp plug-in
In the first step, we designed the front-end effect page according to the functional requirements of the message board, then the next step is to gradually develop the weiphp plug-in based on the effect In the first step, create a plug-in on the Weiphp backend management page. Remember to select "Yes" for both options of whether configuration items are needed and whether management lists are needed.
3. View the code structure
After the plug-in is successfully created, the weipp framework will automatically be in the Addons directory Generate a plug-in folder under the liuyanban directory. This tutorial generates a liuyanban folder, and package it under the liuyanban directory It includes three folders: Controller, Model, and View, and two files: config.php and LiuyanbanAddon.class.php. Logic processing code is generally written in the Controller, including functional codes such as data insertion and data query. Some code for interacting with WeChat is mainly written in the Model, and the front-end template is placed in the View. config.php is the configuration file, LiuyanbanAddon.class.php is the plug-in information file, and generally does not need to be modified.
4. Test whether the plug-in is available
Open Model/WexinAddonModel.class.php
Add test code. The simplest test code is $this->replyTest('hello world');
The 13th and 14th lines of the code below are the test codes written by myself. When the user replies "Leave a message" in WeChat board", return the system time and prompt information
Test whether the plug-in is available in WeChat
bingo, the plug-in is available normally, let’s go on down
5. Create the configuration file
Open config.php and write the configuration code shown in the figure below
Re-open the message board management interface and you will see that the configuration items have been set successfully
Open Model/WexinAddonModel.class.php, re-edit the WeChat response code (lines 15-25), and return the graphic message
Re-test the message board plug-in in WeChat
Return to single picture and text message, bingo, continue going down
6. Import the front-end template
The first step is to download the front-end template. I have uploaded the front-end page I saw first to my Baidu network disk, and you can download it from here: http://www.php.cn/
The second step is to upload the downloaded frontend template to the View/default/Liuyanban folder
Write the output frontend in Controller/LiuyanbanController.class.php The code
#Click on the graphic message replied in WeChat to enter the front page
Look now The home page you arrive at is just a static html page. Clicking "Publish>>" does not result in any jump. We need to add a jump link to "Publish>>"
to open the index.html page. In line 22, change the href link of "Publish>>" to the one shown in the figure below, which jumps to the liuyan() method under the current controller and passes the two parameters token and uid. BTW: {:U('','')} is a template method for generating url for thinphp. If you don’t understand, please Baidu
in front When writing LiuyanController, we wrote a liuyan() method. This method does not perform any logical processing. It just displays the message page, that is, jumps to liuyan.html. After changing the href link address, click "Publish>>" in the upper right corner of index.html to jump to the message publishing page shown below
7. Data model analysis and creation
Database design is undoubtedly the most important in IT technology The most important thing is to learn about database knowledge from Baidu mysql tutorial. Weiphp provides a convenient web-side management data table model. For the front-end page we saw at the beginning, let’s take a look at the input fields on the message page. 
Analysis shows that this message board plug-in only Two visible fields are required: the name of the person who left the message (name) and the content of the message (content). At the same time, the time of the message (cTime), the public account Token (token) where the message is located, and the user UID (uid) of the person who left the message. Knowing this, we began to design the database model.
Open the weiphp background management page and create a new liuyanban data model. The model identifier shown in the screenshot below is liuyan_info. It is recommended that you change it to liuyanban. Because only when the data model name is liuyanban (the same as the plug-in name), the data can be displayed in the default Weiphp front-end message board management list. How to change the default data display page? Creating multiple different data models is beyond the scope of this tutorial, so you should write the data model identifier in the picture below as liuyanban.
After creating the data model, we start to create the fields required for the message board plug-in. Click Field Management on the right side of the data model operation interface->New Field That’s it. Create the five fields mentioned earlier: token, uid, cTime, name, and content. Pay attention to adding field auto-complete rules in the "Advanced" option of the new field page. Add get_token() for token, get_mid() for uid, and time for cTime. ()
These are all the fields we need to create the message board plug-in
Return to the model management page, in the liuyanban model Click Edit on the right side and change the list definition of the liuyanban model to the one shown below. This is to facilitate the message board front-end management page to display data
Return to the message board front-end management page, and you can see the fields and operations that display data (message recipient, message content, message time, operation)
The entire database design process is now complete. The next step is to establish logical processing code to operate the data.
8. Query user information
Open Controller/LiuyanbanController.class.php and write the three lines 16, 17 and 18 in the liuyan() method as shown in the figure below. code, and query the user's information based on the user's uid, and output the information to the commenter's name filling box on the message publishing page. The purpose of this is to facilitate user operations. As long as personal information is bound once, the There is no need to fill in the name repeatedly when making a comment
In the liuyan.html page, change the value of the input box of the name of the commenter to the user’s name. {$user.nickname} is the output user’s nickname
When entering the message posting page, as long as we have previously bound personal information, enter the name of the messager in the input box. The bound nickname can be automatically displayed
##9. Insert message data
Write the data processing code (lines 21-34) in the liuyan() method. When the user submits the message data, insert the message data into the liuyanban data table
After inserting a few pieces of test data on the message page, return to the message board plug-in management page and you will be able to see the message data submitted by the user.
10. Display message information
Create a new data query in the index() method Code, extract the data from the liuyanban data table and display it to the index.html front-end template
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