Why Is Rails Outputting My Array

why is Rails outputting my array?

Change <%= @employees.each do |empl| %> to <%- @employees.each do |empl| %> and it'll stop outputting the list. That is, change the = to a -. Using the = tells ERB to output the result of that command. When you call each, it returns the list so the list is getting output.

As for your unless, I don't think it's actually necessary. If the list is empty? then each will just return without actually performing any repetitions, so the code inside the loop will never get called.

Why is this rails view spitting out a raw array at the end of an .each do loop?

Try removing the equals sign in <%= @post.comments.each do |comment| %>. The equals is only necessary if the method itself outputs something. In this case you're just using it to iterate a collection.

Unexpected array output on page

<% %> Executes the Ruby code inside

<%= %> Prints the results

You are displaying array and then it's values, so you would want to change <%= %> to <% %> .

<%= @fields.select{|field| field.model=="PreferredOffering"}.each do |field| %>

to

<% @fields.select{|field| field.model=="PreferredOffering"}.each do |field| %>

How to stop this array of attributes from showing in my view?

Don't use...

<%= categories.each do |category| %>

Use

<% categories.each do |category| %>

When you use <%=, you're outputting the result of the expression. The result of categories.each is categories, the array that is being output. You don't want to output it, so use <% to evaluate the Ruby without outputting the results.

Rails Console outputting only first record of array?

As you can see c.products didn’t trigger sql query, that means it is cached. c.products.count on the other hand triggers a query and tell you actual information from database. So your c.products possibly changed through other association or by hand directly in database. To receive actual products do c.products.reload, to count cached products(without sql triggering) do c.products.size

See detailed explanation here https://stackoverflow.com/a/18997294

Ruby / Rails - .each Iterator is printing entire array at the end of the loop

# Change this line with an =:
<%= @categories.each do |c| %>
# ...to this:
<%  @categories.each do |c| %>

You only want the side effects on the block of the #each method, you don't want interpolation of the returned value.

Each loop outputs an unwanted dump of the records after the loop

What's happening here is that you're using <%= %>, which is the ERB tag that evaluates its content as Ruby and then prints it to the page. But you don't want to print out the value of @post.comments.each do |comment|; you just want to evaluate it. That's what the <% %> tag (no =) is for.

The reason you're seeing the text you are is that <%= %> implicitly calls to_s on its content.

This answer has a full list of ERB tag types: https://stackoverflow.com/a/7996827/882025

Why is the last array in my loop the only array to display in my view?

  @event_class_array.each do |x|
    @event_class = x
  end

this code means that for each array, @event_class is rewrited with the x. So only the last one is stored there.

If you want to insert all arrays you should do

  @event_class = [] 
  @event_class_array.each do |x|
    @event_class << x
  end

Rails each_slice displaying array at bottom of page

The problematic part is = group.each do |post| since each returns the array itself as well in addition to running the loop. And since you have an = sign before it so the = in the view would also render the returned output of the group.each statement. You may want to use - as - group.each do |post| as it will render the output of group.each.

how to convert array output to normal string in ruby on rails application

Did you look at pluck? This if very useful for if you want just one record from the db (in your case 'name'). You could use that to do this:

a = article.tags.pluck(:name)

To then output your article names separated by spaces do this:

a.join(" ")

For completeness sake, you can chain these methods (like you said in the comment below) like this:

article.tags.pluck(:name).join(" ")

---

Related Topics