Create errors from User::SaveOperation, then render errors in ECR template, Hash(Symbol, Array(String))#each auto-splatting feature not work

[zw963]

I use avram with kemal, following is a example.

e.g. i create a errors like this:

errors # => {:password_confirmation => ["must match"]}

When i check it type use typeof, it is Hash(Symbol, Array(String)).

It should work like this, because auto-splatting, right?

x = {:x => [100, 200], :y => [300, 400]}

x.each do |name, errors|
  p name, errors.join(", ")
end

:x
"100, 200"
:y
"300, 400"

Then, i try to render it in ECR template, like this:

<div style="color: red">
  <% errors.each do |name, errors| %>
    <%= name %> <%= errors.join(", ") %> 
  <% end %>
</div>

It raise error like this:

 30 | <% errors.each do |name, errors| %>
                     ^
Error: too many block parameters (given 2, expected maximum 1)

Why?

thank you.

[asterite]

Guess: errors is not what you think it is.

Try outputting the value of errros type. Something like: <%= typeof(errors) %> and tell us what you get.

Also, note that in the first snippet you have something called x but in the ECR you have errors.

[zw963]

Thank you. @asterite

Okay, i add p! debug in both ECR template and cursor block, please check screenshot.

Following is log output:

typeof(errors) # => Hash(Symbol, Array(String))
errors # => {:password_confirmation => ["must match"]}

Following is ECR output:

Hash(Symbol, Array(String)) {:password_confirmation => ["must match"]}

Both of them is same exactly.

---

Also, note that in the first snippet you have something called x but in the ECR you have errors.

Okay, i create a new example for this.

errors = {:password_confirmation => ["error1"]}
p! typeof(errors)

errors.each do |name, errors|
  p name, errors
end

It works, following is result:

typeof(errors) # => Hash(Symbol, Array(String))
:password_confirmation
["error1"]

Why ECR not work?

<div style="color: red">
  <% errors.each do |name, errors| %>
    <%= name %> 
  <% end %>
</div>

[asterite]

I just tried it. It works for me.

# foo.cr
require "ecr"

errors = {:password_confirmation => ["error1"]}
puts ECR.render("greeter.ecr")

This is "greeter.ecr":

<div style="color: red">
  <% errors.each do |name, errors| %>
    <%= name %>
  <% end %>
</div>

Run crystal foo.cr

[Blacksmoke16]

Try and reproduce it w/o using these extra libs. I just tried:

require "ecr"

errors = {:password_confirmation => ["error1"]}

# test.ecr

# <div style="color: red">
#   <% errors.each do |name, errors| %>
#     <%= name %> <%= errors.join(", ") %> 
#   <% end %>
# </div>
puts ECR.render "#{__DIR__}/../test.ecr"
# <div style="color: red">
#     password_confirmation error1
# </div>

and it works perfectly fine?

[zw963]

Oops! , it my fault, because i have code like errors = [] of String in another kemal block which share same ECR view file and pass different type variable into it.

low level error!