Ruby或Rails：PG数据查询错误，

Question

I'm trying to update a few records based on a user entered string - it won't let me and produces this error:

PGError: ERROR:  invalid input syntax for type boolean: "ian"
LINE 1: UPDATE "subjects" SET treatment_group = 'ian' AND pref_rand ...

I double checked the type from the rails console:

Subject.column_hash["treatment_group"].type
=> :string

And the input method is:

Group Name: <%= text_field_tag(:treatment_group_name) %>

Finally, within the controller I have this logic:

@group_to_randomize = Subject.where("study_site = ? AND treatment_group is null", params[:site_input].to_i).order("created_at ASC").limit(params[:group_size_input].to_i)

      flash[:notice] = "We are at the database level. #{@group_to_randomize.inspect}"
      if params[:treatment_group_name] != '' and params[:site_input] != '' and params[:group_size_input] != ''
        @group_to_randomize.update_all(["treatment_group = ? AND pref_rand = ?", params[:treatment_group_name, @treatment.to_i])
        flash[:notice] = "Subjects randomized, and assigned to group #{params[:treatment_group_name]}"
      else
        flash[:notice] = "Nothing saved, please fill in the form completely."
      end

So that it's easier to read, the error stems from this line:

@group_to_randomize.update_all(["treatment_group = ? AND pref_rand = ?", params[:treatment_group_name], @treatment.to_i])

So I can't figure out why it thinks the input is a boolean, and why it won't save as a string anyway. Any help would be greatly appreciated.

Answer 1

由于语法错误，请修改此行

@group_to_randomize.update_all(treatment_group:params[:treatment_group_name], pref_rand: @treatment.to_i)