CODEWITHSUNDEEP
rubysinatra
FlameDra
FlameDra

Reputation: 2087

Outputting method result to erb

I'm working on an application that creates random sentences. I have it working as a console application, and want to make a Sinatra app which lets me display the sentences on the browser.

I have a variable @grammar that is populated from a form. I want to pass this into a method a few methods which work together to take in a string and generate a random sentence from it using a lot of logic. My rsg.erb file looks like this.

<%= @grammar %>
<%=
  rds = read_grammar_defs(@grammar) #get text from file and parse
  sds = rds.map { |rd| split_definition rd} #use split definition to make array of strings
  tgh = to_grammar_hash(sds) #create hash
  rs = expand(tgh) #create sentence
%>

It prints out the @grammar string to the browser just fine, but the output from expand is not being printed to the browser. The expand method is properly generating the sentence as my console shows this:

[2016-11-17 23:48:47] INFO  WEBrick 1.3.1
[2016-11-17 23:48:47] INFO  ruby 2.3.1 (2016-04-26) [i386-mingw32]
== Sinatra (v1.4.7) has taken the stage on 4567 for development with backup from WEBrick
[2016-11-17 23:48:47] INFO  WEBrick::HTTPServer#start: pid=7192 port=4567
::1 - - [17/Nov/2016:23:48:48 -0500] "GET / HTTP/1.1" 200 1485 0.0100
::1 - - [17/Nov/2016:23:48:48 Eastern Standard Time] "GET / HTTP/1.1" 200 1485
- -> /
The waves portend like big yellow flowers tonight.
::1 - - [17/Nov/2016:23:48:51 -0500] "GET /?grammar=Poem HTTP/1.1" 200 8 0.0010
::1 - - [17/Nov/2016:23:48:51 Eastern Standard Time] "GET /?grammar=Poem HTTP/1.1" 200 8
http://localhost:4567/ -> /?grammar=Poem

Where 'The waves portend like big yellow flowers tonight.' is the output of the expand method. I would like to display this on the erb file so it is displayed on the browser.

How can I do that?

Upvotes: 1

Views: 61

Answers (1)

Jagdeep Singh
Jagdeep Singh

Reputation: 4920

Can you try this:

<%= @grammar %>

<%-# Assigning values to the variables in first step %>
<%-
  rds = read_grammar_defs(@grammar) #get text from file and parse
  sds = rds.map { |rd| split_definition rd} #use split definition to make array of strings
  tgh = to_grammar_hash(sds) #create hash
  rs = expand(tgh) #create sentence
%>

<%-# Printing it in second step %>
<%= rs %>

Upvotes: 2

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