function_array.js

var function_array = {
  // sets the dates for creation of a new document
  "setDateTimes" : function (req, res, next) {
    var tempDate = new Date().toISOString();
    req.body.created_date = tempDate;
    req.body.updated_date = tempDate;
    next();
  },
  
  // sets the created by and updated by for creation of a new document
  "setCreatedUpdatedBy" : function (req, res, next) {
    req.body.created_by = "guest";
    req.body.updated_by = "guest";
    next();
  },
  
  // updates the updated date for an updated document
  "setUpdatedDate" : function (req, res, next) {
    var tempDate = new Date().toISOString();
    req.body.updated_date = tempDate;
    next();
  },
  
  // updates the updated by for an updated document
  "setUpdatedBy" : function (req, res, next) {
    req.body.updated_by = "guest";
    next();
  },
  
  // updates the update count number for an updated document
  "incrementUpdateCount" : function (req, res, next) {
    var collection_name_string = req.path.substr(8, req.path.length - 1).toLowerCase();
    var collection_name_array = collection_name_string.split('/');
    var collection_name = collection_name_array[0];
    
    findDocs(collection_name, {_id: req.params.id}, function(docs) {
      // Grabs the document to parse through and access
      var tempDocs = JSON.parse(JSON.stringify(docs));
      var oldUpdateCount = tempDocs[0].update_count;
      
      var data = { update_count : (parseInt(oldUpdateCount) + 1) };
      
      updateDoc(collection_name, req.params.id, data, function(doc) {
        console.log(doc);
      });
    });
    next();
  },
  
  // Prevents the creation of a new document in core_field for a field that already exists
  // This can be done using the unique identifier in the schema
  "preventExistingFieldDuplication" : function (req, res, next) {
    findDocs('core_field', {table_name: req.body.table_name, field_name: req.body.field_name}, function(docs) {
      if (docs.length > 0) {
        next(new Error('Field already exists'));
      } else {
        next();
      }
    });
  },
  
  // Intercepts the creation of a new field and adds it to the schema to be applied to the endpoints using restify.serve(..)
  "newFieldAdded" : function (req, res, next) {
    console.log(req.body.table_name);
    findDocs('core_table', {table_name: req.body.table_name}, function(docs){
      // Grabs the document to parse through and access
      var tempDocs = JSON.parse(JSON.stringify(docs));
      
      // Initializes the schema data to be whatever the db has stored
      var temp_schema_data = tempDocs[0].schema_data;
      
      // Instantiates new variable for insertion of a new field
      var newFieldEntry = {
        type : req.body.field_type,
        required : req.body.required
      };
      
      // Create the schema json object to add to the schema
      var newSchemaEntry = {};
      // Create a new option inside that object with the same name as the field and apply newFieldEntry
      newSchemaEntry[req.body.field_name] = newFieldEntry;
      
      // Adds the new field entry into the schema
      temp_schema_data[req.body.field_name] = newFieldEntry;
      var data = {"schema_data" : temp_schema_data};
      
      // Adds the new field to the schema and enforces the data policy
      mongoose.model(tempDocs[0].table_name).schema.add(newSchemaEntry);
      
      // Updates the core_table record with the new schema so that if the server restarts it will still reflect the updates
      updateDoc('core_table', tempDocs[0]._id, data, function(document){
        console.log(document);
      });
      next();
    });
  },
  
  "fieldRemovedFromCoreField" : function (req, res, next) {
    var collection_name_string = req.path.substr(8, req.path.length - 1).toLowerCase();
    var collection_name_array = collection_name_string.split('/');
    var collection_name = collection_name_array[0];
    
    findDocs('core_table', {table_name: collection_name}, function(docs) {
      // Grabs the document to parse through and access
      var tempDocs = JSON.parse(JSON.stringify(docs));
      
      // Initializes the schema data to be whatever the db has stored
      var temp_schema_data = tempDocs[0].schema_data;
    });
    next(new Error('Sorry Trying to Debug'));
  }
};