syntax error in RJS

rubyonrails-talk
1

I'm new to Ruby on Rails and came across a problem I could not solve alone. I've a pretty simple RJS file that looks like the following:

3.times do   page.insert_html :bottom, 'messages', 'test' end page.call 'updateMessageWindow'

However this snippet gives a syntax error:

ActionView::TemplateError (compile error D:/Eigene Dateien/Programming/Web/AjaxChat/app/views/chat/update.js.rjs:1: syntax error, unexpected tIDENTIFIER, expecting kEND 3.times do   page.insert_html :bottom, 'messages', 'test' end page.call 'updateMessageWindow'                                                                   ^) on line #1 of chat/update.js.rjs: 1: 3.times do   page.insert_html :bottom, 'messages', 'test' end page.call 'updateMessageWindow'

What is wrong with it? If I remove the last line (page.call 'updateMessageWindow') everything works as expected.

2

Hi, you forgot the block local variable. Thus, the above should have been developed

as follows:

3.times do |page|

page.insert_html :bottom, ‘messages’, ‘test’ end page.call ‘updateMessageWindow’

Good luck,

-Conrad

3

That's not true. You don't need the block variable (and in your example it's doubly bad because you would be overwriting the magic page variables with the integers 0 to 2.

What's the whole of the rjs file ?

Fred

4

Frederick Cheung wrote:

�page.insert_html :bottom, 'messages', 'test' end page.call 'updateMessageWindow'

That's not true. You don't need the block variable (and in your example it's doubly bad because you would be overwriting the magic page variables with the integers 0 to 2.

What's the whole of the rjs file ?

Fred

Right, as it's an rjs file it is automatically wrapped inside a block. After struggling a day with the code and not being able to detect any syntax error whatsoever I checked the encoding of the line endings. To my surprise they were encoded as carriage returns (CR, Mac style). Changing them to Linux (LF) or Windows (CR+LF) style solved the problem and the parser was happy again. I have no clue why my editor (intype) suddenly inserted CRs instead of line feeds (other files I've written with the same editor have a correct encoding of the line endings). To conclude, the syntax error hadn't anything to do with RJS templates in special.