Public Library-study Note 2

1. display controller variables in the view.

Assign a value to the variable in the control, such as $ this-> info_user = $ user, which can be directly used in the view.

2. Use the volist tag for HTML display Arrays

<Volist name = "info_user" id = "VO">

{$ VO. Username} {$ VO. Email} can use the key-value pairs in the array.

3. Hide button <button type = "Submit" style = "display: none"> submit changes </button>

4. Add JS Code to view HTML. Note that the introduction of JS Code must be declared in the head label!

<block name="head">    <script type="text/javascript">        function writable(){            alert("5");        }    </script></block>

Or

<block name="head">   <script type="text/javascript" src="/Public/js/Contribute/index.js"></script></block>

In this way, functions in javascript can be used.

5. Use JavaScript Functions to modify the readonly attribute of HTML tags.

VaR username = Document. getelementsbyid ("1 ");
Username. readonly = "";

// Set the submit button to visible display: None --> display: inline or default
VaR submit = Document. getelementsbyname ("Submit ");
Submit [0]. style. Display = ""; visible in inline by default

6. Differences between getelementsbyname and getelementbyid:

VaR username = Document. getelementsbyname ("username"); obtain multiple objects named username and the result is an array. Modify the attributes in the username [I] mode during use;

VaR username = Document. getelementsbyid ("1"); get a specific object. Use it directly.

7. Jump to the page

$ This-> success ('Modified successfully', '/user/userinfo ');

$ This-> error ('modification failed', '/user/userinfo ');

8. update the database using the data submitted by post

// If it is not submitted by post, an error is reported directly.
If (! Is_post) Halt ("the page does not exist ");

// Write the modified personal information to the database
$ User = D ("user ");

$ Id = SESSION ('user') ['id'];
$ Where ['id'] = $ ID;

// Use arrays to modify the database

$ Data ['email '] = I ('Post. address ');
$ Data ['telphone'] = I ('Post. telphone ');

$ Data ['last _ login_ip '] = I ('Post. last_login_ip ');

$ User-> where ($ where)-> Save ($ data );