I store the linebreaks as "line\n\nline" in the database.
When i am displaying it, I convert it using this method:
def showLineBreaks(from_textarea)
from_textarea.gsub(/\n/,"<br/>")
end
But these renders the text as
line<br><br>line
instead of showing the linebreaks.
What is the right way to do this?
You probably need to flag your content as html_safe for it to display properly, otherwise the view will render it as the string should be displayed.
<%= showLineBreaks.html_safe %>
If you're trying to display newlines saved from text areas, you could do the following in your view:
<%= simple_format from_textarea %>
No need to do manual substitution in this case.
Related
I have a text_area in my rails app where users can paste plain text or code. I really don't want to ask the user to choose text or code for me but want to make it like a WYSWYG text area
Right now I use pre tag. This renders code comments ok but makes text comments look visually ugly.
I can use a syntax highlighting gem, but this requires me to know that the pasted text is code.
Q: Is there any inbuilt apis in rails/ruby to validate if the value in a text area is code or text?
<% if !comment.content.blank? %>
<p> <pre> <%= simple_format comment.content %></pre> </p>
<% end %>
You can instruct the user to wrap the code section around a specific keyword..for instance {code}
then in your template you can extract and decorate the the code section:
<p> <pre><%= comment.content.scan(/{code}(.*?){code}/m) %></pre></p>
I have a text_area tag which allows the user to enter his Bio. When a user is tyoing and if he hits enter or return, a new line starts. But when he saves his input all the text is displayed in one paragraph. I want functionality similar to what stack overflow has.
For example - I hit enter now
This text appears on a new line*
How can I do this?
This is my code in Rails:
<%= form_for :profile do |profile| %>
<%= profile.text_area :bio %>
<%= f.submit "Save Bio" %></p>
<% end %>
You should use text editor for example ckeditor (to simplify web content creation), and in view try simpleformat or raw:
<%= simple_format("Here is some basic text...\n...with a line break.") %>
<%= raw("Here is some basic text...<br/>...with a line break.") %>
There are many ways to handle this. When displaying text previously inputed in text area you can:
replace newline characters with <br/> tags
use <pre> tag and display text inside that tag
split text by newline characters and then wrap each of the chunks into <p> tags
When using approach 1 or 3, make sure to pass text through raw helper, so that any tags within text are displayed. Be aware though, that user may pass arbitrary html inside the textarea, hence your code may be subject to xss attacks.
Is there any method to use beneath form_for that creates a div or span tag that will be inserted into the database? Something like:
<%= form_for #object do |f| %>
<%= f.div_field :column %>
<% end %>
The reason for this is I have several javascript functions that update the content within the div tag and I want the content to get stored in a table in my database. Is this possible, or do I need to just use text inputs with uneditable content?
Don't know about that, but you could always use f.hidden_field :column. In your javascript, when you update the content of the div, also update the content of the hidden field. That way, you can still submit your form and get the content to the server without having to expose a text field.
Perhaps you could also style the immutable text area such that it looks less like a text area; hide the scrollbars and borders and it may look just like a div. But if you want a real div, I would go the hidden field route.
My rails 3 app receives emails. Some of them are plain text. When the app displays them to the user I want them to be properly formatted. In other word I want to encode plain text into html. For example: "Hello\n\nHello" => HelloHello (or something like it).
Of course I can write my own 4 lines of code but I am sure those 4 lines have already be written, tested and wrapped in some nice method call.
I know I'm a little late, but I actually think the proper solution to this, at least within Rails, is to leverage the simple_format helper method provided from ActionView::Helpers::TextHelper.
Wrap your text in a Pre tag:
<%= content_tag('pre', "Hello\n\nHello") %>
Using #html_safe, let me explain with an example:
If in your controller the variable is:
#str = "<h1>Hi</h1>"
Then in the view:
<%= #str.html_safe %>
#Batkins has the right answer, which should be accepted.
if someone who is still looking,
Converting plain text to HTML
<%= simple_format("plain text") %>
Converting HTML to proper plain text
text.html_safe
The simple_format is TextHelper module so you if you want to use simple_format method in controller
include ActionView::Helpers::TextHelper
in your controller
render :text => "bla bla bla"
it be useful
http://apidock.com/rails/ActionView/Rendering/render
I need to display user comments, omitting HTML to prevent attacks (when custom styled elements can be posted as comments)
The only thing, i would like to keep by displaying - is tag
I displaying the comment in this way:
<p class="content"><%=h comment.content.gsub(/\n/,"<br/>") %></p>
Comment is suppossed to be saved in database without any markup
Line ending are converted to "br" tags
But, sure, they are gone, because of =h output mode.
Is there a way to kill all html, except "br" tags ?
You could either use sanitize which keeps only specified HTML tags:
<%= sanitize comment.content.gsub(/\n/,"<br/>"), :tags => ['br'] %>
or (in your case preferably) change the order of both and do the html_escape yourself:
<%= html_escape(comment.content).gsub(/\n/,"<br/>") %>
I'd recommend to use white_list plugin. It's safety for XSS attacts and you will be able to control list of allowed tags