315 lines
14 KiB
HTML
315 lines
14 KiB
HTML
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<title>CodeIgniter User Guide : HTML Table Class</title>
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<td><h1>CodeIgniter User Guide Version 2.1.4</h1></td>
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<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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<a href="../index.html">User Guide Home</a> ›
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HTML Table Class
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<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="ellislab.com/codeigniter/user-guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
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<div id="content">
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<h1>HTML Table Class</h1>
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<p>The Table Class provides functions that enable you to auto-generate HTML tables from arrays or database result sets.</p>
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<h2>Initializing the Class</h2>
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<p>Like most other classes in CodeIgniter, the Table class is initialized in your controller using the <dfn>$this->load->library</dfn> function:</p>
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<code>$this->load->library('table');</code>
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<p>Once loaded, the Table library object will be available using: <dfn>$this->table</dfn></p>
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<h2>Examples</h2>
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<p>Here is an example showing how you can create a table from a multi-dimensional array.
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Note that the first array index will become the table heading (or you can set your own headings using the
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<dfn>set_heading()</dfn> function described in the function reference below).</p>
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<code>
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$this->load->library('table');<br />
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<br />
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$data = array(<br />
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array('Name', 'Color', 'Size'),<br />
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array('Fred', 'Blue', 'Small'),<br />
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array('Mary', 'Red', 'Large'),<br />
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array('John', 'Green', 'Medium') <br />
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);<br />
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<br />
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echo $this->table->generate($data);
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</code>
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<p>Here is an example of a table created from a database query result. The table class will automatically generate the
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headings based on the table names (or you can set your own headings using the <dfn>set_heading()</dfn> function described
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in the function reference below).</p>
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<code>
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$this->load->library('table');<br />
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<br />
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$query = $this->db->query("SELECT * FROM my_table");<br />
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<br />
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echo $this->table->generate($query);
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</code>
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<p>Here is an example showing how you might create a table using discrete parameters:</p>
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<code>
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$this->load->library('table');<br />
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<br />
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$this->table->set_heading('Name', 'Color', 'Size');<br />
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<br />
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$this->table->add_row('Fred', 'Blue', 'Small');<br />
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$this->table->add_row('Mary', 'Red', 'Large');<br />
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$this->table->add_row('John', 'Green', 'Medium');<br />
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<br />
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echo $this->table->generate();
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</code>
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<p>Here is the same example, except instead of individual parameters, arrays are used:</p>
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<code>
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$this->load->library('table');<br />
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<br />
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$this->table->set_heading(array('Name', 'Color', 'Size'));<br />
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<br />
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$this->table->add_row(array('Fred', 'Blue', 'Small'));<br />
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$this->table->add_row(array('Mary', 'Red', 'Large'));<br />
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$this->table->add_row(array('John', 'Green', 'Medium'));<br />
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<br />
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echo $this->table->generate();
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</code>
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<h2>Changing the Look of Your Table</h2>
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<p>The Table Class permits you to set a table template with which you can specify the design of your layout. Here is the template
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prototype:</p>
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<code>
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$tmpl = array (<br />
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'table_open' => '<table border="0" cellpadding="4" cellspacing="0">',<br />
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<br />
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'heading_row_start' => '<tr>',<br />
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'heading_row_end' => '</tr>',<br />
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'heading_cell_start' => '<th>',<br />
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'heading_cell_end' => '</th>',<br />
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<br />
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'row_start' => '<tr>',<br />
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'row_end' => '</tr>',<br />
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'cell_start' => '<td>',<br />
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'cell_end' => '</td>',<br />
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<br />
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'row_alt_start' => '<tr>',<br />
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'row_alt_end' => '</tr>',<br />
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'cell_alt_start' => '<td>',<br />
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'cell_alt_end' => '</td>',<br />
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<br />
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'table_close' => '</table>'<br />
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);<br />
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<br />
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$this->table->set_template($tmpl);
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</code>
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<p class="important"><strong>Note:</strong> You'll notice there are two sets of "row" blocks in the template. These permit you to create alternating row colors or design elements that alternate with each
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iteration of the row data.</p>
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<p>You are NOT required to submit a complete template. If you only need to change parts of the layout you can simply submit those elements.
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In this example, only the table opening tag is being changed:</p>
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<code>
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$tmpl = array ( 'table_open' => '<table border="1" cellpadding="2" cellspacing="1" class="mytable">' );<br />
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<br />
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$this->table->set_template($tmpl);
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</code>
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<br />
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<h1>Function Reference</h1>
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<h2>$this->table->generate()</h2>
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<p>Returns a string containing the generated table. Accepts an optional parameter which can be an array or a database result object.</p>
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<h2>$this->table->set_caption()</h2>
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<p>Permits you to add a caption to the table.</p>
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<code>$this->table->set_caption('Colors');</code>
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<h2>$this->table->set_heading()</h2>
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<p>Permits you to set the table heading. You can submit an array or discrete params:</p>
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<code>$this->table->set_heading('Name', 'Color', 'Size');</code>
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<code>$this->table->set_heading(array('Name', 'Color', 'Size'));</code>
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<h2>$this->table->add_row()</h2>
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<p>Permits you to add a row to your table. You can submit an array or discrete params:</p>
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<code>$this->table->add_row('Blue', 'Red', 'Green');</code>
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<code>$this->table->add_row(array('Blue', 'Red', 'Green'));</code>
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<p>If you would like to set an individual cell's tag attributes, you can use an associative array for that cell. The associative key <dfn>'data'</dfn> defines the cell's data. Any other key => val pairs are added as <dfn>key='val'</dfn> attributes to the tag:</p>
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<code>$cell = array('data' => 'Blue', 'class' => 'highlight', 'colspan' => 2);<br />
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$this->table->add_row($cell, 'Red', 'Green');<br />
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<br />
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// generates<br />
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// <td class='highlight' colspan='2'>Blue</td><td>Red</td><td>Green</td>
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</code>
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<h2>$this->table->make_columns()</h2>
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<p>This function takes a one-dimensional array as input and creates
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a multi-dimensional array with a depth equal to the number of
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columns desired. This allows a single array with many elements to be
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displayed in a table that has a fixed column count. Consider this example:</p>
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<code>
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$list = array('one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten', 'eleven', 'twelve');<br />
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<br />
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$new_list = $this->table->make_columns($list, 3);<br />
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<br />
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$this->table->generate($new_list);<br />
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<br />
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// Generates a table with this prototype<br />
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<br />
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<table border="0" cellpadding="4" cellspacing="0"><br />
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<tr><br />
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<td>one</td><td>two</td><td>three</td><br />
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</tr><tr><br />
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<td>four</td><td>five</td><td>six</td><br />
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</tr><tr><br />
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<td>seven</td><td>eight</td><td>nine</td><br />
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</tr><tr><br />
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<td>ten</td><td>eleven</td><td>twelve</td></tr><br />
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</table></code>
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<h2>$this->table->set_template()</h2>
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<p>Permits you to set your template. You can submit a full or partial template.</p>
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<code>
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$tmpl = array ( 'table_open' => '<table border="1" cellpadding="2" cellspacing="1" class="mytable">' );<br />
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<br />
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$this->table->set_template($tmpl);
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</code>
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<h2>$this->table->set_empty()</h2>
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<p>Let's you set a default value for use in any table cells that are empty. You might, for example, set a non-breaking space:</p>
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<code>
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$this->table->set_empty("&nbsp;");
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</code>
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<h2>$this->table->clear()</h2>
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<p>Lets you clear the table heading and row data. If you need to show multiple tables with different data you should
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to call this function after each table has been generated to empty the previous table information. Example:</p>
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<code>
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$this->load->library('table');<br />
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<br />
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$this->table->set_heading('Name', 'Color', 'Size');<br />
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$this->table->add_row('Fred', 'Blue', 'Small');<br />
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$this->table->add_row('Mary', 'Red', 'Large');<br />
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$this->table->add_row('John', 'Green', 'Medium');<br />
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<br />
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echo $this->table->generate();<br />
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<br />
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<kbd>$this->table->clear();</kbd><br />
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<br />
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$this->table->set_heading('Name', 'Day', 'Delivery');<br />
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$this->table->add_row('Fred', 'Wednesday', 'Express');<br />
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$this->table->add_row('Mary', 'Monday', 'Air');<br />
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$this->table->add_row('John', 'Saturday', 'Overnight');<br />
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<br />
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echo $this->table->generate();
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</code>
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<h2>$this->table->function</h2>
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<p>Allows you to specify a native PHP function or a valid function array object to be applied to all cell data.</p>
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<code>$this->load->library('table');<br />
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<br />
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$this->table->set_heading('Name', 'Color', 'Size');<br />
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$this->table->add_row('Fred', '<strong>Blue</strong>', 'Small');<br />
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<br />
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$this->table->function = 'htmlspecialchars';<br />
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echo $this->table->generate();<br />
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</code>
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<p>In the above example, all cell data would be ran through PHP's <dfn>htmlspecialchars()</dfn> function, resulting in:</p>
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<code><td>Fred</td><td>&lt;strong&gt;Blue&lt;/strong&gt;</td><td>Small</td></code>
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</div>
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<p>
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Previous Topic: <a href="ftp.html"> FTP Class</a> ·
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