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create personal website create personal website The remainder of this section will discuss eruby, written by Shugo Maeda. Embedding Ruby in HTML is a very powerful concept---it basically gives us the equivalent of a tool such as ASP, JSP, or PHP, but with the full power of Ruby. Using eruby eruby acts as a filter, plain and simple. Any text within the input file is passed through untouched, with the following exceptions: Expression Description <% ruby code %> The Ruby code between the delimiters is replaced with its output. <%= ruby expression %> The Ruby expression between the delimiters is replaced with its value.

create personal website <%# ruby code %> The Ruby code between the delimiters is ignored (useful for testing). You invoke eruby as: eruby [ options ] [ document ] If the document is omitted, eruby will read from standard input. The command-line options for eruby are shown in Table 14.1 on page 149. Command-line options for eruby Option Description -d, --debug Sets $DEBUG to true.

create personal website -K kcode Specifies an alternate coding system (see page 137). -M mode Specifies runtime mode, one of: f filter mode c CGI mode (prints errors as HTML, sets $SAFE=1) n NPH-CGI mode (prints extra HTTP headers, sets $SAFE=1) -n, --noheader Disables CGI header output. -v, --verbose Enables verbose mode. --version Prints version information and exits. Let's look at some simple examples.

create personal website We'll run the eruby executable on the following input. This text is <% a = 100; puts "#{a}% Live!" %> eruby substitutes the expression between the delimiters and produces This text is 100% Live! Using the <%= form acts as if you printed the value of the expression. For instance, the input <%a = 100%>This text is almost <%=a%> degrees! Cool! replaces the =a with the value of a. This text is almost 100 degrees! Cool! And, of course, you can embed Ruby within a more complex document type, such as HTML. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.

create personal website

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create personal website