Dexie JS - 结合条件过滤器和文本搜索

Question

I have read a variety of posts and examples on combining and and or statements in a Dexie query, and I'm still confused.

My tasks query begins by filtering out certain attributes based on the app's UI state. For example, I want to view tasks by project, and by whether or not they are completed or deleted. These conditions are all indexed when my database is initialized.

var where = null

switch(selectedProject){
  case 'inbox': 
    where = { project: '', completed: filterCompleted, deleted: 0 }
    break
  case 'my-tasks':
    where = { assignee: sessionStorage.userId, completed: filterCompleted, deleted: 0 }
    break
  default:
    where = { project: selectedProject, completed: filterCompleted, deleted: 0 }
}

//Ready to go...
tasks = await db.tasks.where(where).sortBy('order')

In addition to these ways of viewing different task states, I also have a text search field for filtering down the remaining tasks in a list. I can get it to work great with the following if I omit the above where conditions:

//searchText is the user's input text in the search field
let searchTerms = searchText.split(' ')

tasks = await db.tasks
  .where('name').anyOfIgnoreCase(searchTerms)
  .or('name').startsWithIgnoreCase(searchText)
  .or('notesPlain').anyOfIgnoreCase(searchTerms)
  .sortBy('order')

Where I'm struggling is how to combine the initial UI state's where clause and the above text search. I've tried append this to the above code, but it doesn't work:

...
.sortBy('order')
.filter(function(task){ 
  return task.project == selectedProject && task.completed == filterCompleted && task.deleted == 0
})

Any ideas on how I can solve this?

Answer 1

Hey you can do it like this:

 tasks = (await db.tasks
  .where('name').anyOfIgnoreCase(searchTerms)
  .or('name').startsWithIgnoreCase(searchText)
  .or('notesPlain').anyOfIgnoreCase(searchTerms)
  .sortBy('order'))
.filter(function(task){ 
  return task.project == selectedProject && task.completed == filterCompleted && task.deleted == 0
})

The sortBy returns a Promise so you need to wrap with the await to get the Collection object.