diff --git a/db/schema.rb b/db/schema.rb
index b08bed605..608a4de7e 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -41,14 +41,14 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   end
 
   create_table "addresses", force: :cascade do |t|
-    t.string   "address"
-    t.string   "street_number"
-    t.string   "route"
-    t.string   "locality"
-    t.string   "country"
-    t.string   "postal_code"
+    t.string   "address",        limit: 255
+    t.string   "street_number",  limit: 255
+    t.string   "route",          limit: 255
+    t.string   "locality",       limit: 255
+    t.string   "country",        limit: 255
+    t.string   "postal_code",    limit: 255
     t.integer  "placeable_id"
-    t.string   "placeable_type"
+    t.string   "placeable_type", limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
   end
@@ -64,9 +64,9 @@ ActiveRecord::Schema.define(version: 20190211124726) do
 
   create_table "assets", force: :cascade do |t|
     t.integer  "viewable_id"
-    t.string   "viewable_type"
-    t.string   "attachment"
-    t.string   "type"
+    t.string   "viewable_type", limit: 255
+    t.string   "attachment",    limit: 255
+    t.string   "type",          limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
   end
@@ -83,12 +83,12 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   create_table "availabilities", force: :cascade do |t|
     t.datetime "start_at"
     t.datetime "end_at"
-    t.string   "available_type"
+    t.string   "available_type",  limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "nb_total_places"
-    t.boolean  "destroying",      default: false
-    t.boolean  "lock",            default: false
+    t.boolean  "destroying",                  default: false
+    t.boolean  "lock",                        default: false
   end
 
   create_table "availability_tags", force: :cascade do |t|
@@ -102,7 +102,7 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "availability_tags", ["tag_id"], name: "index_availability_tags_on_tag_id", using: :btree
 
   create_table "categories", force: :cascade do |t|
-    t.string   "name"
+    t.string   "name",       limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
     t.string   "slug"
@@ -111,7 +111,7 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "categories", ["slug"], name: "index_categories_on_slug", unique: true, using: :btree
 
   create_table "components", force: :cascade do |t|
-    t.string "name", null: false
+    t.string "name", limit: 255, null: false
   end
 
   create_table "coupons", force: :cascade do |t|
@@ -129,7 +129,7 @@ ActiveRecord::Schema.define(version: 20190211124726) do
 
   create_table "credits", force: :cascade do |t|
     t.integer  "creditable_id"
-    t.string   "creditable_type"
+    t.string   "creditable_type", limit: 255
     t.integer  "plan_id"
     t.integer  "hours"
     t.datetime "created_at"
@@ -170,7 +170,7 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "event_themes", ["slug"], name: "index_event_themes_on_slug", unique: true, using: :btree
 
   create_table "events", force: :cascade do |t|
-    t.string   "title"
+    t.string   "title",           limit: 255
     t.text     "description"
     t.datetime "created_at"
     t.datetime "updated_at"
@@ -208,10 +208,10 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "exports", ["user_id"], name: "index_exports_on_user_id", using: :btree
 
   create_table "friendly_id_slugs", force: :cascade do |t|
-    t.string   "slug",                      null: false
-    t.integer  "sluggable_id",              null: false
+    t.string   "slug",           limit: 255, null: false
+    t.integer  "sluggable_id",               null: false
     t.string   "sluggable_type", limit: 50
-    t.string   "scope"
+    t.string   "scope",          limit: 255
     t.datetime "created_at"
   end
 
@@ -221,10 +221,10 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "friendly_id_slugs", ["sluggable_type"], name: "index_friendly_id_slugs_on_sluggable_type", using: :btree
 
   create_table "groups", force: :cascade do |t|
-    t.string   "name"
+    t.string   "name",       limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.string   "slug"
+    t.string   "slug",       limit: 255
     t.boolean  "disabled"
   end
 
@@ -243,7 +243,7 @@ ActiveRecord::Schema.define(version: 20190211124726) do
 
   create_table "invoice_items", force: :cascade do |t|
     t.integer  "invoice_id"
-    t.string   "stp_invoice_item_id"
+    t.string   "stp_invoice_item_id", limit: 255
     t.integer  "amount"
     t.datetime "created_at"
     t.datetime "updated_at"
@@ -257,17 +257,17 @@ ActiveRecord::Schema.define(version: 20190211124726) do
 
   create_table "invoices", force: :cascade do |t|
     t.integer  "invoiced_id"
-    t.string   "invoiced_type"
-    t.string   "stp_invoice_id"
+    t.string   "invoiced_type",          limit: 255
+    t.string   "stp_invoice_id",         limit: 255
     t.integer  "total"
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "user_id"
-    t.string   "reference"
-    t.string   "avoir_mode"
+    t.string   "reference",              limit: 255
+    t.string   "avoir_mode",             limit: 255
     t.datetime "avoir_date"
     t.integer  "invoice_id"
-    t.string   "type"
+    t.string   "type",                   limit: 255
     t.boolean  "subscription_to_expire"
     t.text     "description"
     t.integer  "wallet_amount"
@@ -282,17 +282,17 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "invoices", ["wallet_transaction_id"], name: "index_invoices_on_wallet_transaction_id", using: :btree
 
   create_table "licences", force: :cascade do |t|
-    t.string "name",        null: false
+    t.string "name",        limit: 255, null: false
     t.text   "description"
   end
 
   create_table "machines", force: :cascade do |t|
-    t.string   "name",        null: false
+    t.string   "name",        limit: 255, null: false
     t.text     "description"
     t.text     "spec"
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.string   "slug"
+    t.string   "slug",        limit: 255
     t.boolean  "disabled"
   end
 
@@ -309,14 +309,14 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   create_table "notifications", force: :cascade do |t|
     t.integer  "receiver_id"
     t.integer  "attached_object_id"
-    t.string   "attached_object_type"
+    t.string   "attached_object_type", limit: 255
     t.integer  "notification_type_id"
-    t.boolean  "is_read",              default: false
+    t.boolean  "is_read",                          default: false
     t.datetime "created_at"
     t.datetime "updated_at"
     t.string   "receiver_type"
-    t.boolean  "is_send",              default: false
-    t.jsonb    "meta_data",            default: {}
+    t.boolean  "is_send",                          default: false
+    t.jsonb    "meta_data",                        default: {}
   end
 
   add_index "notifications", ["notification_type_id"], name: "index_notifications_on_notification_type_id", using: :btree
@@ -385,20 +385,20 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "organizations", ["profile_id"], name: "index_organizations_on_profile_id", using: :btree
 
   create_table "plans", force: :cascade do |t|
-    t.string   "name"
+    t.string   "name",               limit: 255
     t.integer  "amount"
-    t.string   "interval"
+    t.string   "interval",           limit: 255
     t.integer  "group_id"
-    t.string   "stp_plan_id"
+    t.string   "stp_plan_id",        limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.integer  "training_credit_nb", default: 0
-    t.boolean  "is_rolling",         default: true
+    t.integer  "training_credit_nb",             default: 0
+    t.boolean  "is_rolling",                     default: true
     t.text     "description"
     t.string   "type"
     t.string   "base_name"
-    t.integer  "ui_weight",          default: 0
-    t.integer  "interval_count",     default: 1
+    t.integer  "ui_weight",                      default: 0
+    t.integer  "interval_count",                 default: 1
     t.string   "slug"
     t.boolean  "disabled"
   end
@@ -428,11 +428,11 @@ ActiveRecord::Schema.define(version: 20190211124726) do
 
   create_table "profiles", force: :cascade do |t|
     t.integer  "user_id"
-    t.string   "first_name"
-    t.string   "last_name"
+    t.string   "first_name",        limit: 255
+    t.string   "last_name",         limit: 255
     t.boolean  "gender"
     t.date     "birthday"
-    t.string   "phone"
+    t.string   "phone",             limit: 255
     t.text     "interest"
     t.text     "software_mastered"
     t.datetime "created_at"
@@ -462,7 +462,7 @@ ActiveRecord::Schema.define(version: 20190211124726) do
     t.integer  "project_id"
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.string   "title"
+    t.string   "title",       limit: 255
     t.integer  "step_nb"
   end
 
@@ -473,27 +473,27 @@ ActiveRecord::Schema.define(version: 20190211124726) do
     t.integer  "user_id"
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.boolean  "is_valid",    default: false
-    t.string   "valid_token"
+    t.boolean  "is_valid",                default: false
+    t.string   "valid_token", limit: 255
   end
 
   add_index "project_users", ["project_id"], name: "index_project_users_on_project_id", using: :btree
   add_index "project_users", ["user_id"], name: "index_project_users_on_user_id", using: :btree
 
   create_table "projects", force: :cascade do |t|
-    t.string   "name"
+    t.string   "name",         limit: 255
     t.text     "description"
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "author_id"
     t.text     "tags"
     t.integer  "licence_id"
-    t.string   "state"
-    t.string   "slug"
+    t.string   "state",        limit: 255
+    t.string   "slug",         limit: 255
     t.datetime "published_at"
   end
 
-  add_index "projects", ["slug"], name: "index_projects_on_slug", unique: true, using: :btree
+  add_index "projects", ["slug"], name: "index_projects_on_slug", using: :btree
 
   create_table "projects_components", force: :cascade do |t|
     t.integer "project_id"
@@ -533,19 +533,19 @@ ActiveRecord::Schema.define(version: 20190211124726) do
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "reservable_id"
-    t.string   "reservable_type"
-    t.string   "stp_invoice_id"
+    t.string   "reservable_type",   limit: 255
+    t.string   "stp_invoice_id",    limit: 255
     t.integer  "nb_reserve_places"
   end
 
-  add_index "reservations", ["reservable_type", "reservable_id"], name: "index_reservations_on_reservable_type_and_reservable_id", using: :btree
+  add_index "reservations", ["reservable_id", "reservable_type"], name: "index_reservations_on_reservable_id_and_reservable_type", using: :btree
   add_index "reservations", ["stp_invoice_id"], name: "index_reservations_on_stp_invoice_id", using: :btree
   add_index "reservations", ["user_id"], name: "index_reservations_on_user_id", using: :btree
 
   create_table "roles", force: :cascade do |t|
-    t.string   "name"
+    t.string   "name",          limit: 255
     t.integer  "resource_id"
-    t.string   "resource_type"
+    t.string   "resource_type", limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
   end
@@ -619,18 +619,18 @@ ActiveRecord::Schema.define(version: 20190211124726) do
 
   create_table "statistic_fields", force: :cascade do |t|
     t.integer  "statistic_index_id"
-    t.string   "key"
-    t.string   "label"
+    t.string   "key",                limit: 255
+    t.string   "label",              limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.string   "data_type"
+    t.string   "data_type",          limit: 255
   end
 
   add_index "statistic_fields", ["statistic_index_id"], name: "index_statistic_fields_on_statistic_index_id", using: :btree
 
   create_table "statistic_graphs", force: :cascade do |t|
     t.integer  "statistic_index_id"
-    t.string   "chart_type"
+    t.string   "chart_type",         limit: 255
     t.integer  "limit"
     t.datetime "created_at"
     t.datetime "updated_at"
@@ -639,17 +639,17 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "statistic_graphs", ["statistic_index_id"], name: "index_statistic_graphs_on_statistic_index_id", using: :btree
 
   create_table "statistic_indices", force: :cascade do |t|
-    t.string   "es_type_key"
-    t.string   "label"
+    t.string   "es_type_key", limit: 255
+    t.string   "label",       limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.boolean  "table",       default: true
-    t.boolean  "ca",          default: true
+    t.boolean  "table",                   default: true
+    t.boolean  "ca",                      default: true
   end
 
   create_table "statistic_sub_types", force: :cascade do |t|
-    t.string   "key"
-    t.string   "label"
+    t.string   "key",        limit: 255
+    t.string   "label",      limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
   end
@@ -666,8 +666,8 @@ ActiveRecord::Schema.define(version: 20190211124726) do
 
   create_table "statistic_types", force: :cascade do |t|
     t.integer  "statistic_index_id"
-    t.string   "key"
-    t.string   "label"
+    t.string   "key",                limit: 255
+    t.string   "label",              limit: 255
     t.boolean  "graph"
     t.datetime "created_at"
     t.datetime "updated_at"
@@ -685,7 +685,7 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   create_table "subscriptions", force: :cascade do |t|
     t.integer  "plan_id"
     t.integer  "user_id"
-    t.string   "stp_subscription_id"
+    t.string   "stp_subscription_id", limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
     t.datetime "expiration_date"
@@ -704,7 +704,7 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "tags", ["name"], name: "index_tags_on_name", unique: true, using: :btree
 
   create_table "themes", force: :cascade do |t|
-    t.string "name", null: false
+    t.string "name", limit: 255, null: false
   end
 
   create_table "tickets", force: :cascade do |t|
@@ -719,13 +719,13 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "tickets", ["reservation_id"], name: "index_tickets_on_reservation_id", using: :btree
 
   create_table "trainings", force: :cascade do |t|
-    t.string   "name"
+    t.string   "name",            limit: 255
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "nb_total_places"
-    t.string   "slug"
+    t.string   "slug",            limit: 255
     t.text     "description"
-    t.boolean  "public_page",     default: true
+    t.boolean  "public_page",                 default: true
     t.boolean  "disabled"
   end
 
@@ -781,31 +781,31 @@ ActiveRecord::Schema.define(version: 20190211124726) do
   add_index "user_trainings", ["user_id"], name: "index_user_trainings_on_user_id", using: :btree
 
   create_table "users", force: :cascade do |t|
-    t.string   "email",                  default: "",   null: false
-    t.string   "encrypted_password",     default: "",   null: false
-    t.string   "reset_password_token"
+    t.string   "email",                  limit: 255, default: "",   null: false
+    t.string   "encrypted_password",     limit: 255, default: "",   null: false
+    t.string   "reset_password_token",   limit: 255
     t.datetime "reset_password_sent_at"
     t.datetime "remember_created_at"
-    t.integer  "sign_in_count",          default: 0,    null: false
+    t.integer  "sign_in_count",                      default: 0,    null: false
     t.datetime "current_sign_in_at"
     t.datetime "last_sign_in_at"
-    t.string   "current_sign_in_ip"
-    t.string   "last_sign_in_ip"
-    t.string   "confirmation_token"
+    t.string   "current_sign_in_ip",     limit: 255
+    t.string   "last_sign_in_ip",        limit: 255
+    t.string   "confirmation_token",     limit: 255
     t.datetime "confirmed_at"
     t.datetime "confirmation_sent_at"
-    t.string   "unconfirmed_email"
-    t.integer  "failed_attempts",        default: 0,    null: false
-    t.string   "unlock_token"
+    t.string   "unconfirmed_email",      limit: 255
+    t.integer  "failed_attempts",                    default: 0,    null: false
+    t.string   "unlock_token",           limit: 255
     t.datetime "locked_at"
     t.datetime "created_at"
     t.datetime "updated_at"
-    t.boolean  "is_allow_contact",       default: true
+    t.boolean  "is_allow_contact",                   default: true
     t.integer  "group_id"
-    t.string   "stp_customer_id"
-    t.string   "username"
-    t.string   "slug"
-    t.boolean  "is_active",              default: true
+    t.string   "stp_customer_id",        limit: 255
+    t.string   "username",               limit: 255
+    t.string   "slug",                   limit: 255
+    t.boolean  "is_active",                          default: true
     t.string   "provider"
     t.string   "uid"
     t.string   "auth_token"
diff --git a/lib/tasks/fablab/setup.rake b/lib/tasks/fablab/setup.rake
index 76afc30af..eecf11e39 100644
--- a/lib/tasks/fablab/setup.rake
+++ b/lib/tasks/fablab/setup.rake
@@ -4,6 +4,8 @@ namespace :fablab do
   namespace :setup do
     desc 'assign all footprints to existing Invoice records'
     task chain_invoices_records: :environment do
+      raise "Footprints were already generated, won't regenerate" if Invoice.where.not(footprint: nil).count.positive?
+
       Invoice.order(:created_at).all.each do |i|
         i.chain_record
         i.save!
@@ -12,10 +14,12 @@ namespace :fablab do
 
     desc 'assign all footprints to existing InvoiceItem records'
     task chain_invoices_items_records: :environment do
+      raise "Footprints were already generated, won't regenerate" if InvoiceItem.where.not(footprint: nil).count.positive?
+
       InvoiceItem.order(:created_at).all.each do |i|
         i.chain_record
         i.save!
       end
     end
   end
-end
\ No newline at end of file
+end