F___ F___ -4 years ago 68
Javascript Question

jQuery validate submit form ActionController::ParameterMissing

server log:

`ActionController::ParameterMissing (param is missing or the value is empty: comment)`


used
pry gem
gem params:

<ActionController::Parameters {"utf8"=>"✓", "comment_name"=>"123432",
"comment_description"=>"231424", "commit"=>"submit",
"controller"=>"comments", "action"=>"create", "article_id"=>"5"} permitted: false>


I know the
:comment
should wrapper
coment_name
and
comment_description


so on validate add submitHandler try fix the format error

click submit button the browser show:

enter image description here

jquery validate:

$(function () {

$("form#new_comment").validate({
rules: {
comment_name: {
required: true,
minlength: 3
},

comment_description: {
required: true,
minlength: 5
},
submitHandler: function (form) {
$.ajax({
url: form.action,
type: form.method,
data: $(form).serializeArray(),
dataType: 'script'
});
}
}
});
});


_form.html.erb:

<%= simple_form_for [@article, @article.comments.build], remote: true do |f| %>
<%= f.input :name, input_html: { name: "comment_name"} %>
<%= f.input :description, input_html: { name: "comment_description" } %>
<%= f.submit :submit, class: "btn btn-default" %>
<% end %>


comment_controller:

class CommentsController < ApplicationController

before_action :get_article
before_action :authenticate_user!

def create
@comment = @article.comments.create(comment_params)
@comment.user_id = current_user.id
if @comment.save
respond_to do |format|
format.html { redirect_to @article, notice: "creaed succeed"}
format.js { }
end
else
redirect_to @article, notice: "characters is too short or name has been taken"
end
end

def destroy
@comment = @article.comments.find(params[:id])
if @comment.destroy
respond_to do |format|
format.html { redirect_to @article }
format.js { }
end
end
end

private

def comment_params
params.require(:comment).permit(:name, :description, :article_id, :user_id)
end

def get_article
@article = Article.find(params[:article_id])
end
end


any help thank

Answer Source

The controller expects

<ActionController::Parameters {"utf8"=>"✓", "comment"=>
{name"=>"123432","description"=>"231424"}, "commit"=>"submit", 
"controller"=>"comments", "action"=>"create", "article_id"=>"5"} 
permitted: false>

In your form, by declaring "name" attributes for the 'name' and 'description' fields, you are essentially overwriting the "name" field's name from comment[name] to comment_name. So just remove those name attributes from your form

<%= simple_form_for [@article, @article.comments.build], remote: true do |f| %>
 <%= f.input :name%>
 <%= f.input :description%>
 <%= f.submit :submit, class: "btn btn-default" %>
<% end %>`
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