Fix #750

[ghost]

Hi @mraible
I have tested the fix with the bug-tracker.jh modified (I added in Attachment entity two Blob and two ImageBlob fields):

entity Project {
  name String
}

entity Label {
  label String required minlength(3)
}

application {
  config {
    prodDatabaseType postgresql,
  }
  entities *
}

entity Ticket {
  title String required
  description String
  dueDate LocalDate
  date ZonedDateTime
  status Status
  type Type
  priority Priority
}

entity Attachment {
  name String required minlength(3)
  file1 Blob,
  file2 Blob,
  imageFile1 ImageBlob,
  imageFile2 ImageBlob
}

relationship ManyToMany {
  Ticket{label(label)} to Label{ticket}
}

relationship ManyToOne {
  Ticket{project(name)} to Project
  Ticket{assignedTo(login)} to User
  Ticket{reportedBy(login)} to User
  Comment{login} to User
}

relationship OneToMany {
  Comment{parent} to Comment{child}
  Ticket to Attachment 
}

enum Status {
  OPEN("Open")
  WAITING_FOR_RESPONSE("Waiting for Customer Response")
  CLOSED("Closed")
  DUPLICATE("Duplicate")
  IN_PROGRESS("In Progress")
  REOPENED("Reopened")
  CANNOT_REPRODUCE("Cannot Reproduce")
  SOLVED("Solved")
  WONT_IMPLEMENT("Won't Implement")
  VERIFIED("Verified")
  
}

enum Type {
  BUG("Bug"),
  FEATURE("Feature")
}

enum Priority {
  HIGHEST("Highest")
  HIGHER("Higher")
  HIGH("High")
  NORMAL("Normal")
  LOW("Low")
  LOWER("Lower")
  LOWERST("Lowest")
}

entity Comment {
  date ZonedDateTime
  text String
}

paginate Ticket with pagination

I have the following considerations for the bug commented in this #750 issue:

1. For Blob field @ViewChild fileInput annotation is not declared in the -update.ts file. So I have deleted #fileInput attribute in input html related tag. Besides the input text uses a setFileData method.
2. The getPicture() method is used for ImageBlob field, that calls camera api without this.fileInput.nativeElement.click() method (fileInput was for Blob field and it isn't in related ts file).
3. I have modified -update.ts template for a invalid selection in case that there are Blob and ImageBlob fields in the same entity. There was a if-else statement that not includes this situation.
   Pleas give me a feedback as you can.
   Thanks for the attention and your time.

[mraible]

Works great! Awesome job. It's cool that even my computer allowed me to take and upload a photo.