我对rails比较陌生。这一定是一个非常基本的问题，但我找不到答案。
我的问题：按提交似乎没有更新我的记录。
<%= simple_form_for(@select_statement) do |f| %>
<%= render 'form_error', f:f %>
<div class="form-inputs">
<%= f.input :title, :label => 'Required: Short title for this sql SELECT statment' %>
<%= f.input :description, required: false, :label => 'Optional: Long description of your sql SELECT statment' %>
<%= f.input :sql_select_statement, :label => 'Required: Your sql SELECT statment' %>
<%= f.input :user_email %>
<%= f.input :favorite, :input_html => { :checked => false } %>
<%= f.button :submit %>
</div>
<% end %>
这是我的 .rb 文件
class RalphValidator < ActiveModel::Validator
def validate(record)
byebug if ralph_test_byebug
xyz = 123
end
end
class EmailValidator < ActiveModel::Validator
def validate(record)
# byebug if ralph_test_byebug
email_regex = /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i
record.errors[:base] << 'email address missing or invalid!!! Internal system error!!!' unless record.user_email =~ email_regex
# record.errors[:base] << 'surface mail address missing!!!' unless record.user_email =~ email_regex
# xyz=123
# record.errors.add :user_email, 'email address missing!!!' unless record.user_email =~ email_regex
end
end
class SelectStatement < ActiveRecord::Base
# See http://api.rubyonrails.org/classes/ActiveModel/Validations/ClassMethods.html
include ActiveModel::Validations
attr_accessor :user_email
before_validation(on: :create) do
byebug if ralph_test_byebug
xyz = 123
end
validates_with RalphValidator
validates :sql_select_statement, presence: true
# validates :user_email, presence: true, email: true
validates :favorite, inclusion: [true, false]
byebug if ralph_test_byebug
validates_with EmailValidator, fields: [:user_email]
# see http://www.informit.com/articles/article.aspx?p=2220311&seqNum=2
before_save :ralph_before_save
def ralph_before_save
byebug if ralph_test_byebug
xyz=123
end
if true
def initialize(args)
byebug if ralph_test_byebug
# See http://stackoverflow.com/questions/23050181/ruby-class-new-gives-class-not-initialized-error-in-rails-console
super
byebug if ralph_test_byebug
@initialize_args = args # May be unnecessary
@user_email = args[:user_email] # Probably unnecessary
byebug if ralph_test_byebug
xyz=123
end
end
if true
# See http://guides.rubyonrails.org/active_record_callbacks.html#after-initialize-and-after-find
after_initialize do |s_hash|
zyx = new_record?
byebug if ralph_test_byebug
s_hash[:user_email] = @user_email
byebug if ralph_test_byebug
# xyz=123
end
end
end
现在 app/controllers/select_statements_controller.rb
class SelectStatementsController < DeviseApplicationController
before_action :set_select_statement, only: [:show, :edit, :update, :destroy]
# GET /select_statements
# GET /select_statements.json
def index
@here = s_here(__FILE__, __LINE__)
byebug if ralph_test_byebug
@select_statements = SelectStatement.all
byebug if ralph_test_byebug
xxx=123
end
# GET /select_statements/1
# GET /select_statements/1.json
def show
@here = s_here(__FILE__, __LINE__)
byebug if ralph_test_byebug
xxx=123
end
# GET /select_statements/new
def new
@here = s_here(__FILE__, __LINE__)
byebug if ralph_test_byebug
@select_statement = SelectStatement.new({user_email:@current_user})
byebug if ralph_test_byebug
xyz=123
end
# GET /select_statements/1/edit
def edit
@here = s_here(__FILE__, __LINE__)
byebug if ralph_test_byebug
xxx=123
end
# POST /select_statements
# POST /select_statements.json
def create
@here = s_here(__FILE__, __LINE__)
# byebug if ralph_test_byebug
# @select_statement = SelectStatement.new(select_statement_params:select_statement_params)
# @select_statement = SelectStatement.new({user_email:@current_user, select_statement_params:select_statement_params})
@select_statement = SelectStatement.new({user_email:@current_user})
byebug if ralph_test_byebug
respond_to do |format|
if @select_statement.save
format.html { redirect_to @select_statement, notice: 'Select statement was successfully created.' }
format.json { render :show, status: :created, location: @select_statement }
else
format.html { render :new }
format.json { render json: @select_statement.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /select_statements/1
# PATCH/PUT /select_statements/1.json
def update
@here = s_here(__FILE__, __LINE__)
byebug if ralph_test_byebug
xxx=123
respond_to do |format|
if @select_statement.update(select_statement_params)
format.html { redirect_to @select_statement, notice: 'Select statement was successfully updated.' }
format.json { render :show, status: :ok, location: @select_statement }
else
format.html { render :edit }
format.json { render json: @select_statement.errors, status: :unprocessable_entity }
end
end
end
# DELETE /select_statements/1
# DELETE /select_statements/1.json
def destroy
@here = s_here(__FILE__, __LINE__)
byebug if ralph_test_byebug
@select_statement.destroy
respond_to do |format|
format.html { redirect_to select_statements_url, notice: 'Select statement was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_select_statement
byebug if ralph_test_byebug
@select_statement = SelectStatement.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def select_statement_params
# byebug if ralph_test_byebug
params.require(:select_statement).permit(:title, :description, :sql_select_statement, :user_email, :favorite)
end
end
我的基本问题：Rails 在哪里将表单的字段插入到记录中？例如，我尝试过 before_validate、validates_with、before_save、...
每次我在上面的代码中遇到 byebug 断点时——除了与 :user_email 关联的属性——self 或 @select_statement 都充满了 nil。
显然，我错过了一些非常基本的东西。